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Beneficiation process and device for chemical-grade chromium concentrate powder

A chromium concentrate and chemical technology, which is applied in the field of beneficiation process and device of chemical grade chromium concentrate

Active Publication Date: 2021-05-11
刘小玮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The first object of the present invention is to provide a kind of beneficiation process of chemical grade chromium concentrate powder, the beneficiation process of this chemical grade chromium concentrate powder separates the impurities of chromium concentrate ore with different particle size ranges by utilizing different magnetic field strengths, and obtains Chemical grade chromium concentrate powder solves the technical problems of industrial production of domestic chemical grade chromium concentrate

Method used

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  • Beneficiation process and device for chemical-grade chromium concentrate powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] use figure 1 In the mineral processing device shown, the chrome concentrate is first sent to the three-pass dryer 2 for drying, wherein the fluidized fluidized furnace 1 provides heat source for the three-pass dryer 2, and after drying, it enters the bag filter 3 for dust removal. Then use the square vibrating sieve 4 to sieve out different particle size ranges, which are specifically divided into: chrome concentrate with particle size>0.425mm, 0.2mm≤particle size≤0.425mm, 0.125mm≤particle size<0.2mm, and particle size<0.125mm.

[0033] Put the chromium concentrates of the above four different particle size ranges into the weak magnetic separator 5 respectively, and adjust the different magnetic field strengths of the weak magnetic separator 5 according to the different particle sizes, wherein the particle size > 0.425mm correspondingly adjusts the weak The weak magnetic intensity of the magnetic separator 5 is 4000 gauss; 0.2mm≤particle size≤0.425mm correspondingly adj...

Embodiment 2

[0036] use figure 1 In the mineral processing device shown, the chrome concentrate is first sent to the three-pass dryer 2 for drying, wherein the fluidized fluidized furnace 1 provides heat source for the three-pass dryer 2, and after drying, it enters the bag filter 3 for dust removal. Then use the square vibrating sieve 4 to sieve out different particle size ranges, which are specifically divided into: chrome concentrate with particle size>0.425mm, 0.2mm≤particle size≤0.425mm, 0.125mm≤particle size<0.2mm, and particle size<0.125mm.

[0037]Put the chromium concentrates of the above four different particle size ranges into the weak magnetic separator 5 respectively, and adjust the different magnetic field strengths of the weak magnetic separator 5 according to the different particle sizes, wherein the particle size > 0.425mm correspondingly adjusts the weak The weak magnetic intensity of the magnetic separator 5 is 4200 gauss; 0.2mm≤particle size≤0.425mm correspondingly adju...

Embodiment 3

[0040] use figure 1 In the mineral processing device shown, the chrome concentrate is first sent to the three-pass dryer 2 for drying, wherein the fluidized fluidized furnace 1 provides heat source for the three-pass dryer 2, and after drying, it enters the bag filter 3 for dust removal. Then use the square vibrating sieve 4 to sieve out different particle size ranges, which are specifically divided into: chrome concentrate with particle size>0.425mm, 0.2mm≤particle size≤0.425mm, 0.125mm≤particle size<0.2mm, and particle size<0.125mm.

[0041] Put the chromium concentrates of the above four different particle size ranges into the weak magnetic separator 5 respectively, and adjust the different magnetic field strengths of the weak magnetic separator 5 according to the different particle sizes, wherein the particle size > 0.425mm correspondingly adjusts the weak The weak magnetic intensity of the magnetic separator 5 is 4100 Gauss; 0.2mm≤particle size≤0.425mm correspondingly adj...

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Abstract

The invention provides a beneficiation process for chemical-grade chromium concentrate powder. The beneficiation process comprises the following steps: screening chromium concentrate into different particle size ranges; enabling the chromium concentrate to enter corresponding weak magnetic fields according to different particle size ranges, and attracting and separating strong magnetic impurities by weak magnetism to obtain weak magnetic chromium concentrate with different particle size ranges; and enabling the obtained weakly magnetic chromium concentrates with different particle size ranges to enter corresponding strong magnetic fields, and attracting and separating weakly magnetic impurities by strong magnets to obtain the chemical-grade chromium concentrate powder. According to the beneficiation process, impurities of the chromium concentrates in different particle size ranges are separated through different magnetic field intensities, the chemical-grade chromium concentrate powder is obtained, and the problem of industrial production of the chemical-grade chromium concentrates in China is solved.

Description

technical field [0001] The invention relates to the technical field of chemical grade chromium fine powder, in particular to a beneficiation process and device for chemical grade chromium fine powder. Background technique [0002] As an important strategic resource, chromium ore is widely used in metallurgical industry, refractory material and chemical industry. China's chromium reserves account for less than 2% of the world's total. The global chromium ore resources are relatively abundant, with a total reserve of more than 12 billion tons, but the distribution is extremely uneven. Chromium ore resources are mainly distributed in South Africa, Zimbabwe, Kazakhstan, Finland and Turkey. According to data from the US Geological Survey, the global chrome ore reserves in 2018 were about 560 million tons, of which South Africa accounted for 36%, Kazakhstan accounted for 41%, India accounted for 18%, and other countries in the world accounted for only 5%. In terms of output, in ...

Claims

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Application Information

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IPC IPC(8): B03C1/30
CPCB03C1/30Y02P10/20
Inventor 刘小玮
Owner 刘小玮
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