Stainless steel slag dry magnetic separation device and process

A dry magnetic separation, stainless steel technology, applied in the field of metallurgy and mineral engineering, can solve the problems of tailings pond secondary pollution, long wet process, high production cost, shorten the production process, expand desulfurization efficiency, improve The effect of metal recovery

Pending Publication Date: 2019-02-22
JIUQUAN IRON & STEEL GRP
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Problems solved by technology

[0011] The purpose of the present invention is to provide a stainless steel slag dry-type magnetic separation device and process to solve t

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  • Stainless steel slag dry magnetic separation device and process

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Such as figure 1 As shown, a dry type magnetic separation device for stainless steel slag includes a raw material bin 1 and a steel scrap collection device 17, and also includes a crushing and screening device 2 arranged under the raw material bin 1 and a magnetic separation device 3 communicated with the crushing and screening device 2. The magnetic separation device 3 includes a magnetic separation unit, a screening mechanism and an abrasive mechanism, the magnetic separation unit includes a dry drum magnetic separator 4 and a dry magnetic separator 5, and the screening mechanism includes a screening machine 6 and a vibrating screen group 7 , the abrasive mechanism includes a dry coarse grinding ball mill 8 and a dry fine grinding ball mill 9, a dry drum magnetic separator 4 is set under the crushing and screening device 2, and the mag...

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Abstract

The invention discloses a stainless steel slag dry magnetic separation device and process, and belongs to the technical field of metallurgy and mineral engineering. The device comprises a raw materialbin, a scrap steel collecting device, a crushing and screening device and a magnetic separator; the magnetic separator comprises a magnetic separation unit, a screening. mechanism and an abrasive mechanism; and the crushing and screening device comprises a crushing mechanism, a separating mechanism and a dispersing mechanism. The process comprises the steps of primary crushing and screening, secondary crushing, screening and iron removal, material dispersing, primary magnetic separation screening and secondary magnetic separation. In the treatment process of stainless steel slag, 58-60% of stainless steel slag does not need to be ground, the purposes of more crushing and less grinding of steel slag, dry grinding and tailings dry discharge are achieved, the content of free calcium oxide ina desulfurization agent is increased, and the desulfurization efficiency of the desulfurization agent is improved; and water is not consumed during treatment, a tailings pond does not need to be arranged, the production process is shortened, and the metal recovery rate in the process of selecting iron from stainless steel slag is increased.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and mineral engineering, and in particular relates to a stainless steel slag dry magnetic separation device and a process. Background technique [0002] During the stainless steelmaking process of iron and steel enterprises, due to the special smelting process of stainless steel, the amount of steel slag produced reaches 30% of the steel output. While the production capacity of stainless steel is expanding, the total amount of metallurgical solid associated waste is also increasing year by year. The tailings of stainless steel slag after iron selection have been piled up for a long time, and problems such as dust environmental pollution and social benefits have emerged. With the continuous increase of steel slag production, the existing environmental and social problems have become increasingly prominent. [0003] As an important additive element in the stainless steel smelting process, the dem...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/14
CPCB02C21/00B02C23/14B02C2201/06
Inventor 权芳民何成善王小平张志荣姚嘉斌袁洁
Owner JIUQUAN IRON & STEEL GRP
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