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How to extract silica sand from kaolin tailings?

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This paper describes in detail the method of extracting silica sand from sandy kaolin tailings, which can make full use of tailings and improve the application value of kaolin tailings. Its silica sand concentrate fully meets the requirements of glass quartz sand index. Kaolin and its tailings Kaolin is an important non-metallic mineral material. It is not only a necessary raw material for building materials, light industry and other traditional industries, but also a basic material for the development of modern industry. Kaolin mineral resources are continuously exploited and utilized, and a large number of tailings will be produced in the process of mining and processing of kaolin, and the number of tailings will increase year by year. The continuous accumulation of tailings occupies a large amount of land, which affects the ecological environment and also causes the waste of mineral resources. The treatment methods of Kaolin Tailings mainly include: building t...
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METALLURGICAL EFFICIENCY

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One of the most important and basic concepts in beneficiation plant is metallurgical efficiency. Two  terms are commonly used to describe the efficiency of metallurgical processes: recovery and grade . These phenomena are illustrated in the generalized process presented in Figure 1. In above example, 100 tph of ore are being fed into a concentration operation that produces 4.5 tph of concentrate and 95.5 tph of tailings. In upgrading this process, then, 1.0 tph of the desired material, A, is introduced into the unit operation and 0.9 tph (4.5 × 0.2) of this material reports to the concentrate, resulting in 90% recovery (0.9/1.0 × 100). The grade of the mineral, A, has been improved from 1% to 20%. The term percent recovery refers to the percentage of the valuable material reporting to the concentrate with reference to the amount of this material in the feed. Note that obtaining the highest possible recovery is not necessarily the best approach in a concentration process. High...
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