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How to extract silica sand from kaolin tailings?
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...
What are the standards and processing of oil fracturing sand?
In silica sand processing and sand washing plant , Petroleum fracturing sand is a special proppant that must be used in oil production under specific geological conditions. Is this the case with technical standards and production technology? Spherical oil fracturing sand Spherical petroleum fracturing sand is made of natural quartzite, quartz sandstone or massive quartz. Its silica content is more than 96%, Mohs hardness is more than 65, gravel diameter is greater than 14 meshes and less than 80 meshes. The crude quartz sand is processed and put into an omnidirectional grinding machine. Under the condition of adding grinding agent, it is grinded for 2-8 hours before grinding. When the material is cleaned and dried so that its moisture content reaches 8-12%, it is then transferred to the drying, separation and iron removal process. Then the polishing machine is selected to add polishing agent for polishing, and the polished material is then processed ...
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