Writing and argumentative essay
Tuesday, August 25, 2020
Building Teams and Resolving Conflict Essay Example | Topics and Well Written Essays - 750 words
Building Teams and Resolving Conflict - Essay Example Besides, compromise is a basic part of organizations in the contemporary world. This is attributable to the way that there is expanded assorted variety in the work environment coming about to expanded odds of contention. A powerful supervisor will have the answer for clashes emerging in the working environment. In the event that he neglects to do as such, he will have bombed his obligation as a chief. This paper talks about a portion of the significant explanations for managersââ¬â¢ disappointments. One of the striking explanations behind managerââ¬â¢s disappointment is poor relational abilities. Directors who are inactive communicators neglect to pass the message across to their workers that reflect in lackluster showing that may inevitably prompt disappointment (Dotlich and Cairo, 2007). Inadequate directors will in general have poor relational abilities as they don't tune in to what the workers need to state and don't impart their contemplations to them (Gallos, 2008). Choices made by such administrators are one-sided and workers can't communicate their disappointment and this effects negative on the entityââ¬â¢s execution. There are those directors that need authority and may neglect to apply persuasive aptitudes to confront the issues in the association. Directors who don't address the perspectives and sentiments of workers are probably going to bomb as they face approaching opposition from the representatives. Strife among representatives is unavoidable and administrators ought to be set up to manage such circumstances once they emerge. Worker clashes have been an expanding marvel in the advanced world inferable from expanding decent variety in the current occasions (Moley, Pietri and Mosley, 2010). On the off chance that administrators don't have what it takes to deal with worker clashes successfully, they will bomb as the work spot will get disorderly and this will unfavorably influence the managerââ¬â¢s execution. Absolutely, the manner in which a director handles strife decides if they will succeed or come up short. An extensive number of directors experience thriving
Saturday, August 22, 2020
Phonological Awareness in Young Children
Question: Depict about the Handbook of study hall exercises to create phonological mindfulness in little youngsters? Answer: Presentation The significance of phonemic mindfulness for the improvement of early figuring out how to peruse is generally acknowledged however individuals are still doubter with respect to the job it plays in the advancement of perusing and articulating ability of the youngsters. A few instructors get confounded about the idea of phonetic mindfulness with some other pertinent issues. So there is a need to characterize phonemic mindfulness in a suitable manner. Phonemic mindfulness is characterized as the ability to hear, distinguish, perceive, and control sounds. It is vital for kids to know about how the hints of the words work before they figure out how to peruse prints from the book. To cause the kids to comprehend that the words are comprised of discourse sounds which are called Phonemes. Phonemes are the littlest section of a specific word that can be verbally expressed such that has any kind of effect in the significance of the word. (Path, 2015) It is obvious that phonological mindfulness is basic for figuring out how to peruse any arrangement of words. Research uncovers that one who finds phonemic mindfulness and phonological aptitudes troublesome shows that he have poor perusing, articulating and spelling formative perspective. The activity of a phonological processor is done naturally by effectively speaking with the kids. Be that as it may, a degree of metalinguistic discourse is required to create perusing and realizing, which isn't simple or normal. Another viewpoint that needs a notice is that phonological aptitude don't have any relationship with the degree of knowledge. It has been demonstrated that some extremely savvy individuals have issues identified with phonetic mindfulness. (Phonological Awareness, 2015) In this way we see that the significance of the phonological or phonemic mindfulness at the youth level is gigantic. We will attempt to clarify the contention for the significance of phonological abilities to perusing and spelling. (PHONOLOGICAL AWARENESS, 2015) Significance Of Phonological Awareness For learning and utilizing alphabetic composing framework, Phoneme mindfulness is required. Without appropriate phoneme mindfulness understudy may be ignorant regarding the letters imprinted on the course books and get confused with this printing framework. The phoneme mindfulness assists with recognizing and precisely foresee the eventual fate of the youngsters in regards to their capacity to peruse, articulate and spell words. This sort of expectation is done through straightforward trial of information on the names of the letters, mindfulness identified with the discourse sound of words and jargon. (Pre-K Pages, 2015) Some poor perusers and spellers are by chance need appropriate phonological expertise and phonemic mindfulness. In this manner the requirement for the mindfulness is perceived. (Understanding Rockets, 2009) Phonological mindfulness made by homeroom directions help the amateurs to lessen challenges related with perusing and spelling. (Partin, 2013) Phonological mindfulness causes kids to take care of new words and attempt to partner and contrast them and such words that are natural to them. It encourages the youngsters to rehash and articulate words in a right way. This sort of mindfulness likewise empowers the youngsters to recollect words with the goal that they can utilize at whatever point required. One of the significant thing that the phonological mindfulness encourages youngsters to do is that they figure out how to recognize words that sound comparable and isolate the importance of the two separate word. (Great and Gillon, 2014) (Reading Rockets, 2010) Instructing systems to create phonological mindfulness: Phonemic mindfulness can be invigorated by utilizing instructional exercises in the preschool and primary school so as to guarantee that the youngsters are prepared for their perusing, articulating and spelling exercises. (Ldonline.org, 2015)Here are four instructing strategies are talked about that are going to assist an instructor with developing phonological abilities in the kids. (Aability.com, 2015) (Teams.lacoe.edu, 2015) Tuning in To A Series Of Sound The methodology is to create abilities of mindfulness and memory upgrade by tuning in to a grouping of sounds and language with respect to talking about them. Materials: Here articles are necessitated that make particular sounds. A portion of the materials that are required in these exercises are talked about underneath: Items that make sounds: Slamming into the table, applauding, hacking, folding paper, pounding, pouring water, ringing the ringer, whistling Instructional technique: In this game, kids are encouraged to perceive the sounds made by all the accessible materials independently. When they have effectively distinguished the single hints of the articles, they should be encouraged to close their eyes. The instructor presently makes each stable in turn and requests that understudies remember them with shut eyes. The appropriate response of the understudies should in a sentence structure like This is the sound of a ringer. When the understudies can recognize single sounds the instructor should next proceed with pair of sounds. The understudies with shut eyes should again distinguish sounds and answer them in a sentence structure. At that point in conclusion the instructor must make a progression of sound and let the youngsters to answer them. It must be remembered that the teacher should separately ask understudies with the goal that every single youngster can take an interest in this game. (Mihai et al., 2014) Applauding Names To Identify Syllables The procedure here is to assist youngsters with recognizing syllables by advising them to applaud and include the quantity of syllables in their own names. This is done to familiarize the youngsters to the idea of syllables. (Nchindila, 2012) Materials: Paper patterns with names of the youngsters composed on it, a bin to store the paper patterns Instructional strategy: First the instructor must record names on the paper patterns. The names that are to be chosen must be of differentiating lengths which will make ID of syllables various. Next the instructor must welcome a youngster and ask him/her to choose a paper and read out the name on it. The name must be rehashed by the teacher syllable by syllable while applauding on the include of every syllable in the name. After this ask the youngsters what number occasions did we applauded? thus what number of syllables are there in the name? (Mann and Foy, 2003) Along these lines various names of differing length must be chosen by the youngsters with the goal that they can include multiple syllables in the names. This system should likewise be possible by presenting pictures of various articles and applauding by articulating the names. Along these lines syllables can be tallied and comprehended by kids. Discovering Intial And Final Sounds This instructing system empowers kids to distinguish introductory phonemes. This is finished by looking into the underlying hints of a wide scope of words. (Tips for Teaching Phonological Awareness, 2015) Materials: Picture cards Instructional method: The teacher is encouraged to utilize a table for this method. The instructor is required to spread the image cards on the table. At that point the kids must be approached to distinguish and choose those photos whose name start with a comparative sound. For instance, kids must choose picture cards of box and ball and separate it as the underlying phoneme is comparable. Here again the teacher should be increasingly careful about the articulating the words after the image card is chosen. The words must be articulated by extending the underlying phoneme of the words like b-b-b-b-box, b-b-b-ball. This can be additionally done by making little gatherings of youngsters and passing pictures around them. They should recognize the photos and drop the photos on the heap of comparable starting phoneme. Here the instructor is encouraged to exclusively evaluate the youngsters and permit them to choose, isolate and articulate the words in an appropriate manner. It is fundamental for a phonological educator to permit each kid to take an interest in the exercises. (Justin, n.d.) Remove A Sound The game focuses on the capacity of the youngsters to isolate the hints of the words and comprehend the significance of those words. Material: A white board and a marker Instructional methodology: The instructor initially should record a few words on the board whose end of the main letter can shape an important word. For instance, hear, blow and so forth these words can be utilized in this game. In the event that the main letter of the word Hear is evacuated, at that point we get Ear which holds an importance. Next the instructor should boisterously articulate the word composed on the board showing the understudies to rehash the word. When they have rehashed the words, the teacher must cause them to comprehend the significance of the word by activities. At that point the instructor must eradicate the primary letter of the word and articulate the word boisterously and in an extended way. On the other hand the importance of the word must be shown the youngsters. In this by removing the primary letter of the words, the underlying phoneme changes. End The various methodologies utilized in the phonological exercises are energetic in nature yet every system centers around the distinctive sound structure. Our point is to present phonemic mindfulness as a segment I the early education program. The handbook of study hall exercises to create phonological mindfulness inspires the instructor or educator to advance understudies in a situation accepted to be semantically rich. It is profoundly fundamental for the guardians to perceive the need of their youngsters to create phonological aptitude so as to empower their kids to peruse and spell appropriately. Scholarly projects that incorporate these sort of phonological mindfulness exercises must be empowered by the general public and its significance must be perceived. (Varela Osorio, Viecco Reyes and Florez Trochez, 2014) References Aability.com, (2015).FREE Phonemic Awareness Games. [online] Available at: https://aability.com/styled-3/styled-6/index.html [Accessed 25 Feb. 2015]. Fresch, M. also, Harrison, D. (2013). Playing With Poetry to Develop Phonemic Awareness.IRAE, pp.1-9. Great, P. also, Gillon, G
Sunday, July 26, 2020
Work Projects Administration
Work Projects Administration Work Projects Administration (WPA), former U.S. government agency, established in 1935 by executive order of President Franklin Delano Roosevelt as the Works Progress Administration; it was renamed the Work Projects Administration in 1939, when it was made part of the Federal Works Agency. Created when unemployment was widespread, the WPAâ"headed by Harry L. Hopkins until 1938â"was designed to increase the purchasing power of persons on relief by employing them on useful projects. WPA's building program included the construction of 116,000 buildings, 78,000 bridges, and 651,000 mi (1,047,000 km) of road and the improvement of 800 airports. Also a part of WPA's diversified activities were the Federal Art Project, the Federal Writers' Project, and the Federal Theatre Project. Close to 10,000 drawings, paintings, and sculptured works were produced through WPA, and many public buildings (especially post offices) were decorated with murals. The experiments in theatrical productions wer e highly praised and introduced many fresh ideas. Musical performances under the project averaged 4,000 a month. The most notable product of writers in WPA was a valuable series of state and regional guidebooks. WPA also conducted an education program and supervised the activities of the National Youth Administration . At its peak WPA had about 3.5 million persons on its payrolls. Altogether WPA employed a total of 8.5 million persons, and total federal appropriations for the program amounted to almost $11 billion. There was sharp criticism of the WPA in a Senate committee report in 1939; the same year the WPA appropriation was cut, several projects were abolished, and others were curtailed. A strike of thousands of WPA workers to prevent a cut in wages on building projects was unsuccessful. Steadily increasing employment in the private sector, much speeded just before and during World War II, caused further drastic cuts in WPA appropriations and payrolls. In June, 1943, the agency officially went out of existence. See D. S. Howard, WPA and Federal Relief Policy (1943). The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved. See more Encyclopedia articles on: U.S. History
Friday, May 22, 2020
Queen Seondeok of Koreas Silla Kingdom
Queen Seondeok ruled the Kingdom of Sillaà starting in 632, marking the first time a female monarch rose to power in Korean history ââ¬â but certainly not the last. Unfortunately, much of the history of her reign, which took place during Koreas Three Kingdoms period, has been lost to time. Her story lives on in legends of her beauty and even occasional clairvoyance.à Although Queen Seondeok led her kingdom in a war-torn and violent era, she was able to hold the country together and advance Silla culture. Her success paved the way for future ruling queens, marking a new era in a female dominion of South Asian kingdoms. Born Into Royalty Not much is known about Queen Seondeoks early life, but it is known that she was born Princess Deokman in 606 to King Jinpyeong, the 26th king of the Silla, and his first queen Maya. Although some of Jinpyeongs royal concubines had sons, neither of his official queens produced a surviving boy. Princess Deokman was well-known for her intelligence and accomplishments, according to the surviving historical records. In fact, one story tells of a time when the Emperor Taizong of Tang China sent a sample of poppy seeds and a painting of the flowers to the Silla court and Deokman predicted the flowers in the picture would have no scent. When they bloomed, the poppies were indeed odorless. The princess explained that there were no bees or butterflies in the painting ââ¬â hence, her prediction that the blossoms were not fragrant. Becoming Queen Seondeok As the oldest child of a queen and a young woman of great intellectual power, Princess Deokman was selected to be her fathers successor. In Silla culture, a familys heritage was traced through both the matrilineal and patrilineal sides in the system of bone ranksà ââ¬â giving high-born women more authority than in other cultures of the time. Because of this, it was not unknown for women to rule over small sections of the Silla Kingdom, but they had only ever served as regents for their sons or as dowager queens ââ¬â never in their own name. This changed when King Jinpyeong died in 632 and the 26-year-old Princess Deokman became the first-ever outright female monarch as Queen Seondeok. Reign and Accomplishments During her 15 years on the throne, Queen Seondeok used skillful diplomacy to form a stronger alliance with Tang China. The implicit threat of Chinese intervention helped to ward off attacks from Sillas rivals, Baekje and Goguryeo, yet the queen was not afraid to send out her army as well. In addition to external affairs, Seondeok also encouraged alliances among the leading families of Silla. She arranged marriages between the families of Taejong the Great and General Kim Yu-sin ââ¬â a power bloc that would later lead Silla to unify the Korean Peninsula and end the Three Kingdoms period. The queen was interested inà Buddhism, which was fairly new to Korea at the time but had already become the state religion of Silla. As a result, she sponsored the Bunhwangsa Temple construction near Gyeongju in 634 and oversaw the completion of Yeongmyosa in 644. Theà 80-meter-tall Hwangnyongsa pagoda included nine stories, each of which represented one of Sillas enemies. Japan, China, Wuyue (Shanghai), Tangna, Eungnyu, Mohe (Manchuria), Danguk, Yeojeok, and Yemaek ââ¬â another Manchurian population associated with the Buyeo Kingdom ââ¬â were all depicted on the pagoda until Mongol invaders burned it down in 1238. Lord Bidams Revolt Near the end of her reign, Queen Seondeok faced a challenge from a Silla nobleman called Lord Bidam. Sources are sketchy, but he likely rallied supporters under the motto Women rulers cannot rule the country. The story goes that a bright falling star convinced Bidams followers that the queen too would fall soon. In response, Queen Seondeok flew a flaming kite to show that her star was back in the sky. After just 10 days, according to the memoirs of a Silla general, Lord Bidam and 30 of his co-conspirators were captured. The rebels were executed by her successor nine days after Queen Seondeoks own death. Other Legends of Clairvoyance and Love In addition to the story of the poppy seeds of her childhood, further legends about Queen Seondeoks predictive abilities have come down through word of mouth and some scattered written records. In one story, a chorus of white frogs appeared in the dead of winter and croaked ceaselessly in the Jade Gate Pond at Yeongmyosa Temple. When Queen Seondeok heard about their untimely emergence from hibernation, she immediately sent 2,000 soldiers to the Womans Root Valley, or Yeogeunguk, west of the capital at Gyeongju, where the Silla troops found and wiped out a force of 500 invaders from neighboring Baekje. Her courtiers asked Queen Seondeok how she knew that the Baekje soldiers would be there and she replied that the frogs represented soldiers, white meant they came from the west, and their appearance at the Jade Gate ââ¬â a euphemism for female genitalia ââ¬â told her that the soldiers would be in the Womans Root Valley. Another legend preserves the Silla peoples love for Queen Seondeok. According to this story, a man namedà Jigwià traveled to the Yeongmyosa Temple to see the queen, who was making a visit there. Unfortunately, he was tired out by his journey and fell asleep while waiting for her. Queen Seondeok was touched by his devotion, so she gently placed her bracelet on his chest as a sign of her presence. Whenà Jigwià woke up and found the queens bracelet, his heart was so filled with love that it burst into flame and burned down the entire pagoda at Yeongmyosa. Death and Succession One day sometime before her passing, Queen Seondeok gathered her courtiers and announced that she would die on January 17, 647. She asked to be buried in the Tushita Heaven and her courtiers replied that they did not know that location, so she pointed out a place on the side of Nangsan (Wolf Mountain). On exactly the day that she had predicted, Queen Seondeok died and was interred in a tomb on Nangsan. Ten years later, another Silla ruler built Sacheonwangsaà ââ¬â The Temple of Four Heavenly Kings ââ¬â down the slope from her tomb. The court later realized that they were fulfilling a final prophecy from Seondeok wherein Buddhist scripture, the Four Heavenly Kings live below the Tushita Heaven on Mount Meru. Queen Seondeok never married or had children. In fact, some versions of the poppy legend suggest that the Tang Emperor was teasing Seondeok about her lack of offspring when he sent the painting of the flowers with no attendant bees or butterflies. As her successor, Seondeok chose her cousin Kim Seung-man, who became Queen Jindeok. The fact that another ruling queen followed immediately after Seondeoks reign proves that she was an able and astute ruler, Lord Bidams protestations notwithstanding. The Silla Kingdom would also boast Koreas third and final female ruler, Queen Jinseong, who nearly two hundred years later from 887 to 897.
Friday, May 8, 2020
Islam And The Western Media - 3071 Words
ââ¬Å"When I think Islam, I think belly dancers, bombs, and billionairesâ⬠This is something I have heard from many peopleââ¬â¢s mouths. When people think of the word Islam, or Muslim, a certain generalized picture comes to mind. I am sure this picture involves such things as sand, camels, oil, covered women, hookah, amongst other things. Though this is what the Western media generalizes Islam as, there is much more to Islam than the three Bââ¬â¢s and these pictures that come to mind. Islam is not only a religion but is also a way of life. Like many things, Islam is stereotyped, generalized, and misunderstood. When most of us think of Islam we think of the ââ¬Å"oppressedâ⬠women and ââ¬Å"messed upâ⬠laws and we fail to see the truths of Islam and what it really stands for. Though the stereotypes we have heard may have or currently do believe, hold some truth there is more to Islam than what most Americans and westerners claim to see. Islam means submission to the will of Allah (swt1), {see footnote} the Arabic word for God, and the obedience of His law. Islam is the religion followed by Muslims. Muslim means one who submits to Allah (swt). Allah (swt) sent Prophet Muhammad (saws2) the words of the Koran, the Holy Book of Islam. Prophet Muhammad (saws) also wrote the Hadith, which is the group of sayings of Prophet Muhammad (saws) {see footnote} and a collection of things that he did. The Koran, also spelt Qurââ¬â¢an, and the Hadith are the books that are the basis for the Islamic faith and theShow MoreRelatedIslam and Western Media1930 Words à |à 8 PagesSiddiqui Introduction to Islam Islam amp; Muslims in Western Media In July 12, 2008 publication of the New York Times, it was reported that the President of Sri Lanka was killed in a suicide attack. The religion of the suicide bomber was never reported. 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This current obsession is filled with negative signifiers with the global mediaââ¬â¢s predominantly negative, and to an extent racist portrayal of Islam and Muslims. Muslims are generally represented as violent, fanatical, bigoted, or as extremists and terrorists. Media coverage of Islam-related issues has changed drastically since the start ofRead MoreThe Art of Jihad Documentary1598 Words à |à 7 Pagesstereotypes about Islam especially in USA, and how they try to reveal the actual meaning of Islam through their works. Non-Muslim people, especially non-Arabs, do not know the real meaning of Islam. These people always misjudge Muslims and think that Islam tells us not to be peaceful. This happens because of the corrupted media as it displays the wrong stereotypes of Islam. But after watching this documentary I found out that there are still some educated peopl e in the western society. 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As well as, identifying how these framings, specifically from Western media, can incite feelings of fear and hatred towards Muslims and Islam. B. Population/ Area of Focus: Young Adults and Adults with access to broadcast and internet media Thesis Statement: Due to limited exposure to Islam and the Muslim lifestyle and a narrow scope of news reporting there
Wednesday, May 6, 2020
Spiral Concentrator Free Essays
Chapter 1. Spiral à §1. 1 Spiral A spiral concentrator uses gravity to separate particles of different densities. We will write a custom essay sample on Spiral Concentrator or any similar topic only for you Order Now It is used globally in the mineral processing industry. It is one of the most effective, low-cost devices for the gravity beneficiation of ores. Manufactured from lightweight, corrosion and abrasion resistant materials, spirals require a minimum of maintenance and upkeep. Consists of an open trough that twists downward in helix configuration about a central axis. Particles fed to the top of the concentrator are separtated radially on the basis of density and size as the slurry gravitates downward.Spirals are made of fiberglass onto which smooth urethane surface is molded to form a trough in the shape of a spiral as the name suggests. Between individual spiral types, the profile of the trough and the pitch as well as the diameter and height and number of turns can vary according to duty. Feed slurry is introduced at the top and is subjected to a combination of gravitational and centrifugal forces imparted by its motion down the spiral. This causes high SG minerals to move towards the centre of the trough and water and low SG minerals towards the outside. The segregated slurry discharging from the spiral at the bottom can thus be separated by cutters into high SG (concentrate) and low SG (tailings) together with intermediate SG (middling). Single Start Spiral à §1. 2 Applications of Spirals Spiral concentrators have, over numerous years, found many varied applications in mineral processing, but perhaps their most extensive usage has been in the treatment of heavy mineral sand deposits, such as those carrying ilmenite, rutile, zircon, and monazite, and in recent years in the recovery of fine coal.Spirals are commonly used to separate sand sized particles with moderate SG differential in the range -2mm +75um, although varieties exist that can separate reasonably efficiently down to 38um. Below this size range efficiency falls off rapidly, and enhanced fine gravity separators are generally required. Applications for spiral separators â⬠¢ Mineral Sands â⬠¢ Iron ore â⬠¢ Chromite â⬠¢ Silica Sands â⬠¢ Coal â⬠¢ Gold à ¢â¬ ¢ Others Spiral components ? Modular feedbox ? Splitters ? Repulpers ? Product box Modular feedbox ââ¬â The feed point to a spiral separator is an area where the feed slurry is normally relatively fast flowing.The duty of the feedbox is to dissipate some of the energy in the feed slurry and present the feed to the top of the separation trough in a homogenous and quiescent slurry distributed across the width of the spiral trough. The modular feed box system achieves this objective with replaceable componentry that can withstand a high impact abrasion. [pic] Splitters- Each spiral start has six concentrate collection splitters which direct the concentrate into the inboard collection trough. These splitter mechanisms are designed for easy adjustment and repeatable positioning (using a graduated scale).They have a positive splitter-to-spiral seal and are able to handle a high volume of concentrate. All splitter handle indicators are readily visible so that the operator s can see and adjust large numbers of handles accurately and quickly. The splitter is used to direct the particles to their respective discharge ports. At the end of the spiral there is a Splitter and discharge part Repulpers ââ¬â The installation of repulpers on spiral troughs improves the separation efficiency of spiral separators. The function of repulpers is to capture and divert a portion of water from the high velocity tailing stream and introduce it to the relatively sluggish middling stream in order fluidise the particle bed and re-initiate separation mechanisms . Repulper to Direct water from Outer Spiral Wall To concentrate collection area Product Box- The collection and laundering of the product fractions from spirals (concentrators, middlings, tailings) is facilitated by product boxes which are designed to collect common fractions from the separating troughs of multi- start spiral separators.The design of this feature is critical to ensure the effective directional change and joining of fast- moving slurries whilst minimizing splash and impact abrasion. [pic] à §1. 3 Spiral Operation [pic] Cross section of a spiral concentrator divided into various regions A cross section of a spiral concentrator can be divided into various regions, with each region describing the effect it has on the slurry travelin g through it : ? On the outer most region (1) (perimeter), will have mostly water, with fine particles, trapped by the high velocity of the moving water. Moving inward towards the center of the spiral, the next region(2) would consist of a very small area where the maximum water velocity exists, and prevents any separation to occur. This region is defined since it separates the next region (3) from the first region ? Region 3 is a very active region where the velocity begins to slow down and most of the separation occurs, as more dense particles settle to the bottom and the water velocity keeps the light density particles in the stream near the surface, where they eventually wind up in the outer regions (2 and 1). The next region (region 4) is actually where two regions overlap (region 3 and 5), and is a very narrow region (like region 2). ? Next to the last region (region 5) is where the heavy density concentrates collect Working Principle of Spiral Concentrators: In order to have a good separation, there should be a difference in Specific Gravityââ¬â¢s of at least 1. 0. One main benefit of spiral concentrators is they have no moving parts. The feed range, in percent solids, to a spiral ranges from 20% solids up to 40% solids. Depending upon the material characteristics, a maximum efficiency will usually be reached somewhere in this range.All that is required are some slurry pumps, the slurry to be separated and the banks of spirals with a feed distributor. ? Slurry is pumped to the top of the spiral (typically 13â⬠² to 15â⬠² from the floor), and it enters a feed distributor that evenly distributes the feed to each spiral concentrator. The design and shape of the spiral make it work, when combined with gravitational acceleration. ? As the slurry travels the spiraling path down the spiral, mineral grains settle and start sorting according to size, density and to a lesser extend shape. Low density particles are carried with the bulk of the water towards the outside of the spiral (perimeter), while particles with the greatest density migrate towards the inside of the spiral Chapter 2 Types of Spirals à §2. 1 Types of Spirals ? Washwaterless Spirals This type of spiral is used in most applications, particularly for concentrating low-grade ores. The only water required is added with the solids prior to introducing feed onto the spiral. Concentrates are removed either at the bottom directly into the product box or at several interme diate take-off points down the spiral. ? Coal/Mica SpiralsLarger in diameter than mineral-type spirals, these spirals are designed to take advantage of the particle shape differences as well as specific gravity differences. Take-off splitters at different points down the helix give this spiral a high capacity to remove refuse ore and siliceous contaminants from the coal or the mica. ? Washwater Spirals Washwater spirals require the addition of water at various points down the spiral providing more efficient washing of the concentrate, i. e. , transporting away light gangue (silica) from the concentrate band Standard Spiral Separators ââ¬â Typically treat 2tph per start Have 3 starts per assembly (attached to one column) ââ¬â Tonnage per assembly is 6tph ? High Capacity Spirals ââ¬â Treat up to 5tph per start ââ¬â Have 4 starts per assembly ââ¬â Tonnage per Assembly is 20tph High Capacity Spiral (Rougher and Scavenger) High Capacity Spiral Fine Mineral Spiral Standard Spiral Standard High Grade Spiral New High Grade Spiral à §2. 2 Benefits of the use of Spirals ? One main benefit of spiral concentrators is that they have no moving parts; ? To treat more material in less floor area; ? Low maintenance and simplicity; ? Higher separation efficiency than pinched sluice devices Chapter 3 Geometric and Operational ParametersGeometric Parameters Geometrical variables: ? Diameter ? Pitch ? Down trough slope Some of these factors are interdependent. In general, recent design spiral separator have complex geometrical trough profiles that change throughout the length of the spiral trough. Diameter The trough diameter impacts on the trough profiles and downtrough slope and thence scale-up for higher capacity is not a trivial geometrical exercise Pitch The pitch (vertical distance between successive turns) determines the down trough slope and slurry velocity. This factor also influences the residence time of the feed slurry as does the number of turns.Down slope The slope can effect the velocity of the slurry moving through the spiral. The steeper the slope the higher the slurry velocity. |Model |5LL-1200 |5LL-900 |5LL-600 |5LL-400 | |Chute Outside Diameter(mm) |1200 |900 |600 |400 | |Qitch(mm) |900,720,540 |675,540,405 |450,360,270 |240,180 | |Ration of Qitch to Diameter |0. 5,0. 6,0. 45 |0. 75,0. 6,0. 45 |0. 75,0. 6,0. 45 |0. 6,0. 45 | |Lateral Slope |9à ° |9à ° |9à ° |9à ° | |Max Number of Spirals |4 |4 |3 |2 | |Feed Size(mm) |0. 3-0. 03 |0. 3-0. 03 |0. 2-0. 02 |0. 2-0. 2 | |Feed Density(%) |25-55 |25-55 |25-55 |25-55 | |Capacity(T/h) |4-6 |2-3 |0. 8-1. 2 |0. 15-0. 2 | |Dimention |Length(mm) |1360 |1060 |700 | Operational Parameters Operational variables: ? Slurry velocity ? Amount of slurry ? Amount of water Each parameter improves the impact on the other. The amount of water improves the amount of slurry and the Slurry velocity. The slurry velocity also depends on the density, mass and the viscosity of the materialThe amount of water effects the slurry viscosity . If the amount of water increases the flow- rate of the slurry increases. Conclusion The wide variety of spiral separator models now available provides a selection of models that ensures most applications where gravity separation of fine minerals can be utilized. The use of spiral concentrators benefits low-cost process plant .Further benefits to operators of mineral processing plants incorporating spiral separators include: â⬠¢ Efficient feed distribution and products laundering systems â⬠¢ Ease of control â⬠¢ Low maintenance and long service life â⬠¢ The availability of circuit modeling systems â⬠¢ Simplified plant operation The ongoing development effort to improve the metallurgical performance and capacity of spiral separators for specific duties has e ffectively extended the product life cycle of this gravity separation device. How to cite Spiral Concentrator, Papers
Tuesday, April 28, 2020
Make Your Essay Perfect from the Beginning
Academic Essay How to Begin your Academic EssayThe purpose of academic writing is to express your idea and support it with evidences. Even the structure of your essay must serve this purpose, and the beginning of the essay is one of the most important parts. It must introduce your topic and focus your readers on key points of your paper. It must also give a hint on how you are going to explore a certain issue.Introduce your EssayFirst of all, you have to introduce your topic. But a topic is related to the entire paper, so if you want to make your readers understand the purpose of your essay, you have to get clear how youââ¬â¢re going to work on this topic. Here you need to point out examples of your arguments. Your readers must be able to get a general context of the essay. For example, if you write an essay about the Second Amendment, you can use certain historical sources or legal publications. You can mention some mass shooting or other incidents that raised questions about gun control. Anywa y, your goal is to specify what exactly you will talk about, so this is a stage where you can narrow your topic, which is mostly important for too broad issues. Narrowing your topic is the next necessary step of your introduction essay. You focus your readers on particular features of your subject, giving them a certain context to work with. This simplifies your task and also grabs attention, so your readers want to consider such an issue with you and get clear, what exactly you are talking about.Focus Your EssayIntroducing your essay, try to recall how you started working on this subject. Following the natural line of thoughts, you have to specify the key issue of your essay. Tell which question you consider the most important and why. The nice way to do it is to ask a question, so you could give a detailed answer then. Another approach is writing a thesis statement. You can also give the answer immediately after the question, giving a suggestion about the content of your essay. If you have a controversial topic, your question may be followed by different arguments that represent key points on this question.Obviously, the beginning of your essay shouldnââ¬â¢t be too long. We are talking just about hints that help readers understand your paper and consider certain issue with you. The body of the essay is a better place for detailed analysis and extended answers to the questions raised at the beginning. We also suggest you to make a correct structure that could allow you to develop your idea step-by-step. Write your arguments, sorting them by priority, so that the whole idea of your essay would be clear at the conclusion section.Orient Your ReadersYou have to locate your readers in the discussion, giving them all necessary information. Itââ¬â¢s important to orient your readers through your entire essay, but at the beginning, itââ¬â¢s the most important thing. You need to make sure that your readers understand all specific terms and facts. You can easil y find necessary phrases just by answering basic questions about your arguments and statements, such as ââ¬Å"why?â⬠, ââ¬Å"when?â⬠, ââ¬Å"how?â⬠and so on. Thus you provide your readers with a quick guide to your paper. Moreover, if the source of your statement is really short (just like with the Second Amendment), you can write the entire citation. If you use a well-known quote, you can just write a key phrase from it, or the beginning of it. Anyway, we suggest you to pay special attention to orienting your readers, so itââ¬â¢s better to write a short summary of your claims and arguments.The Length of the BeginningThe beginning of the essay writing must be proportional to the other parts. It also depends on the complexity of your topic and used terms. Thus, if you write a five-paragraph essay, we suggest you to make a classic structure with one paragraph of the introduction. Obviously, if your essay is twenty pages long, an introduction would take up to five p ages.You need to write your introduction, following a logical order. You have to focus readers at the end, to create a smooth logical transition to the main part, which is a body of the essay. Keep your topic and context related to each other, but it doesnââ¬â¢t mean that you must always introduce the topic first. Your structure is flexible and you can change it depending on the purpose and style of your essay.
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