Method and device for purifying quartz in non-ferrous metal tailings

Abstract

The invention relates to a method and a device for purifying quartz in non-ferrous metal tailings. The method comprises the following steps of setting a flotation particle size lower limit and a flotation particle size upper limit; carrying out different treatment to ensure that tailings with ultra-fine particle size do not participate in a flotation process and a grinding process; separating tailings with ultra-coarse particle size, and carrying out individual grinding; carrying out a pre-flotation process before only grinding the tailings with ultra-coarse particle size; separating out non-quartz impurities; and then combining the ground tailings with the separated tailings with proper particle sizes, and carrying out post-flotation, high-intensity magnetic separation and filtration to finally obtain a quartz concentrate finished product with the silicon oxide purity of 90% or above. The method and the device have the effects that the quartz with standard inner particle siz is purified from the non-ferrous metal tailings, and heating and chemical reaction are not needed. And on the other hand, a non-trunk recovery process can be performed in the quartz purification process to produce a soil conditioner, thereby implementing the effects of no waste and zero wastewater discharge.

Description

technical field [0001] The invention relates to the technical field of processing non-ferrous metal tailings, in particular to a method and a device for purifying quartz from non-ferrous metal tailings. Background technique [0002] According to relevant data on tailings, there are more than several billion tons of non-ferrous metal tailings (sand) in various parts of the country. In the past, due to technical and equipment reasons, the tailings could not be reused. Abandonment causes excessive accumulation, which not only brings great difficulties to the development of enterprises, but also brings huge pollution and safety hazards to the surrounding environment and water resources, and endangers human health. Now with the development and improvement of new technologies and equipment for mineral processing, the reuse of non-ferrous metal tailings (sand), especially the comprehensive utilization of all high-efficiency, has been paid attention to. The reuse of tailings (sand) ...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a method for purifying quartz in non-ferrous metal tailings. The main progress is to introduce the concept of the lower limit of the flotation particle size and the upper limit of the flotation particle size, and the heating process of calcination or calcination is not required to purify quartz, and To solve the problem of poor flotation efficiency that requires multiple individual flotation processes and the environmental pollution caused by chemicals used in various flotation processes

[0009] The third main purpose of the present invention is to provide a method for preparing soil conditioner from non-ferrous metal tailings to solve the problem of waste pollution in the production process of non-ferrous metal tailings to purify quartz

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