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Low-quality potash feldspar iron removal purification method

A low-quality potassium feldspar technology, applied in the field of iron removal and purification of low-quality potassium feldspar, can solve the problems of inability to achieve whitening, high processing costs, air pollution, etc., and achieve convenient operation, low cost, and accelerated dissociation Effect

Inactive Publication Date: 2018-05-29
洛南县大秦钾矿有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnetic separation has a good iron removal effect, and the iron content can be reduced to 0.25%. However, weak magnetic and non-magnetic iron are generally difficult to remove by magnetic separation and cannot achieve the whitening effect; the process is simple and easy to process, but There are disadvantages such as high processing cost, high energy consumption, low profit, low efficiency, and serious air pollution.
In recent years, with the rapid development of new architectural glass, architectural ceramics and daily-use ceramics industries and the urgent requirements of environmental protection, the requirements for the grade and iron content of potassium feldspar are getting higher and higher, and the existing technology is difficult to meet the needs of development , which puts forward higher requirements for the deep processing technology and process of potassium feldspar

Method used

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  • Low-quality potash feldspar iron removal purification method
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  • Low-quality potash feldspar iron removal purification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Potassium feldspar mineral raw materials are first crushed into potassium feldspar particles with a particle size of less than 6mm by a crusher, and then sent to a drum sieve to screen to remove impurities such as mica, fine mud and large particles, and then the screened potassium feldspar particles are ball milled, Get 80-200 mesh potassium feldspar sand powder, then send the potassium feldspar sand powder into the spiral chute for separation and sorting, select the sediment, and obtain potassium feldspar fine powder, and finally put the potassium feldspar fine powder into microwave water Hot pickling treatment to complete the purification. Among them, the process parameters of microwave hydrothermal pickling treatment are: sulfuric acid is used as the pickling agent, and the mass concentration of sulfuric acid is 10%, the mass ratio of sulfuric acid to potassium feldspar powder is 2:1, and the microwave hydrothermal temperature is 150°C , Microwave water heating time ...

Embodiment 2

[0029] Potassium feldspar mineral raw materials are first crushed into potassium feldspar particles with a particle size of less than 6mm by a crusher, and then sent to a drum sieve to screen to remove impurities such as mica, fine mud and large particles, and then the screened potassium feldspar particles are ball milled, Get 80-200 mesh potassium feldspar sand powder, then send the potassium feldspar sand powder into the spiral chute for separation and sorting, select the sediment, and obtain potassium feldspar fine powder, and finally put the potassium feldspar fine powder into microwave water Hot pickling treatment to complete the purification. Among them, the process parameters of microwave hydrothermal pickling treatment are: sulfuric acid is used as the pickling agent, and the mass concentration of sulfuric acid is 20%, the mass ratio of sulfuric acid to potassium feldspar powder is 2:1, and the microwave hydrothermal temperature is 140°C , Microwave water heating time ...

Embodiment 3

[0033]Potassium feldspar mineral raw materials are first crushed into potassium feldspar particles with a particle size of less than 6mm by a crusher, and then sent to a drum sieve to screen to remove impurities such as mica, fine mud and large particles, and then the screened potassium feldspar particles are ball milled, Get 80-200 mesh potassium feldspar sand powder, then send the potassium feldspar sand powder into the spiral chute for separation and sorting, select the sediment, and obtain potassium feldspar fine powder, and finally put the potassium feldspar fine powder into microwave water Hot pickling treatment to complete the purification. Among them, the process parameters of microwave hydrothermal pickling treatment are: sulfuric acid is used as the pickling agent, and the mass concentration of sulfuric acid is 30%, the mass ratio of sulfuric acid to potassium feldspar powder is 2:1, and the microwave hydrothermal temperature is 130°C , Microwave water heating time i...

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Abstract

The invention relates to a low-quality potash feldspar iron removal purification method. According to the method, firstly, potassium feldspar is crushed to be made into particles; then, the potassiumfeldspar particles are ground into sand powder by a ball milling process; next, the obtained sand powder is screened; next, magnetic selection is performed by using a multistage strong magnetic selection machine; finally, the potassium feldspar sand powder subjected to the magnetic selection is subjected to acid washing in sulphuric acid by a microwave hydrothermal method; the high-quality and high-purity potassium feldspar sand powder is obtained. The purification process meets the requirement of domestic industries of glass, ceramics, enamel and the like on high-whiteness potash feldspar sand powder; in addition, the microwave hydrothermal technology is applied to the potash feldspar ore purification aspect; the characteristics of high production efficiency, low energy consumption, harmlessness, no pollution and the like are realized; the method belongs to a green and environment-friendly iron removal purification process.

Description

technical field [0001] The invention relates to a beneficiation process, in particular to a method for iron removal and purification of low-quality potassium feldspar. Background technique [0002] Feldspar is an aluminosilicate mineral containing calcium, sodium, and potassium. There are many kinds of it, such as potassium feldspar, albite, anorthite, and sanidine. They all have glass luster and come in a variety of colors, including colorless, white, yellow, pink, green, gray, black, etc. Some are transparent, some are translucent. Feldspar itself should be colorless and transparent. The reason why it is colored or not completely transparent is because it contains other impurities. Some are lumpy, some are plate-like, and some are columnar or needle-like. Among them, potassium feldspar is an important industrial raw material with a wide range of uses, mainly used in ceramics, glass, enamel and other industries. However, natural potassium feldspar ores usually contain m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
CPCC01B33/26C01P2004/03C01P2006/60
Inventor 杨海波陈安林陈仕英王亦嫘
Owner 洛南县大秦钾矿有限公司
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