Comprehensive utilization method of sandy kaolin tailings containing tourmaline, muscovite and quartz sand

Abstract

The invention discloses a comprehensive utilization method of sandy kaolin tailings containing tourmaline, mica and quartz sand. The method comprises the following steps that after the sandy kaolin tailings are subjected to screening operation, various products such as mica powder, kaolin, the tourmaline, fragment-grade mica, quartz sand, and magnetic tailings are separated through grinding of coarse products, stirring and rinsing of fine products, hydrocyclone classification, high-frequency vibrating screen screening, and magnetic separation, gravity separation and flotation combined beneficiation process flows by using an electromagnetic slurry magnetic separator, a wet-type plate magnetic separator, a vertical-ring high-gradient magnetic separator, a shaking table, a flotation machine and like. According to the method, the magnetic separation, the gravity separation and the flotation combined beneficiation process is adopted, concentrate products such as the high-quality quartz sand, the tourmaline, and the mica are obtained, meanwhile, the residual kaolin products are recovered; and magnetically separated ferric silicate minerals can be used as building materials or cement rawmaterials, the comprehensive recovery utilization rate of secondary resources of the kaolin tailings is improved to the greatest extent, zero discharge of the tailings is achieved, and high economicaland social benefits are achieved as well.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of tailings resources, in particular to a method for comprehensive utilization of sandy kaolin tailings containing tourmaline, muscovite and quartz sand. Background technique [0002] Kaolin is a very important non-metallic mineral that is common in nature and is widely used in ceramics, papermaking, coatings, pigments, glass, rubber, plastics, chemicals, medicine and other fields. Kaolin is mainly divided into three types: hard kaolin, soft kaolin and sandy kaolin. Among them, sandy kaolin contains quartz, feldspar, mica, tourmaline and other valuable minerals to varying degrees, and is associated with magnetite and ilmenite. , pyrite, plant fiber, organic peat and other impurities. [0003] Sandy kaolin beneficiation and purification methods are generally: raw ore-mixing-pulping-removing plant fibers-grading sand removal-magnetic separation-bleaching-press filtration dehydrati...

AI Technical Summary

Problems solved by technology

my country is a big kaolin producing country, and its kaolin mineral resources rank among the top in the world. The soft kaolin and sandy kaolin tailings produced every year occupy a large amount of valuable land resources, resulting in a serious waste of valuable minerals. It also cannot achieve the purpose of full and comprehensive utilization of secondary resources, and it is easy to cause secondary pollution of water quality, soil and air.

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