Method for preparing feldspar powder concentrate by mineral separation of aeolian sand in desert

Abstract

The invention belongs to an industrial utilization method of aeolian sand in desert, in particular to a method for preparing feldspar powder concentrate by mineral separation of aeolian sand in desert. The method comprises an early-stage ferrum-removal process, a middle-stage feldspar flotation separation process and a later-stage ferrum-removal process. The early-stage ferrum-removal process comprises the following specific steps: firstly, carrying out dry magnetic separation on the aeolian sand in the desert; carrying out reselection and separation on the concentrate obtained after dry magnetic separation; carrying out powerful scrubbing and sizing-desliming on the concentrate obtained after reselection and separation; and carrying out wet magnetic separation to obtain the ferrum-removal concentrate for the middle-stage feldspar flotation separation process, and carrying out the later-stage ferrum-removal process on the feldspar mineral aggregate obtained in the middle-stage feldspar flotation separation process to finally obtain the feldspar powder concentrate. The processes of the invention have the advantages of water conservation, reduced energy consumption and low cost, and can fully utilize the existing aeolian sand resources to produce the high-quality feldspar powder concentrate.

Description

technical field [0001] The invention relates to an industrial utilization method of desert aeolian sand, in particular to a method for preparing feldspar powder by using desert aeolian sand. Background technique [0002] In recent years, the global desertification area is expanding at a rate of more than 60,000 square kilometers per year, directly threatening the living environment of human beings. According to authoritative reports, Northwest China is advancing towards desertification at an astonishing rate of 2,000 square kilometers per year, causing economic losses of more than 50 billion yuan to my country every year. What is even more worrying is that the ecological environment here has been seriously damaged. . [0003] Desert aeolian sand is recognized as waste sand, disaster sand, and disaster sand, and few people study and utilize it. Over the years, humans have mainly planted trees and grass on the surface of the desert to control the aeolian sand in the desert. H...

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Problems solved by technology

[0010] In addition, even if the feldspar ore obtained after flotation separation, its K 2 O, Na 2 The content of O is still more than 5%, especially Fe 2 o 3 The content is still about 0.35%, and it cannot be directly used in the ceramic industry (one Fe 2 o 3 content less than 0.2%)

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