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Method for sorting stainless steel slag

A stainless steel and steel slag technology, applied in chemical instruments and methods, solid separation, magnetic separation, etc., can solve the problems of occupying land, increasing the amount of tailings, and inefficient recovery of metals.

Active Publication Date: 2014-05-07
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The steel slag obtained after the steel slag treatment in the production process of stainless steel is generally only recovered by manual roughing, and the remaining tailings contain a large amount of metals, which cannot be recycled and are subject to industrial Garbage discharge, on the one hand, leads to the waste of a large amount of precious metal resources, on the other hand, the inefficient recovery of metals leads to an increase in the amount of tailings, occupying land

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] In March 2008, stainless steel slag was sorted in the stainless steel slag processing production line with an annual processing capacity of 760,000 tons in the slag yard operation area of ​​Taiyuan Iron and Steel Processing Plant. A metal sensor was installed under the belt conveyor, and the steel slag with a particle size of 15-80mm, When it is transported to the material distribution port through the belt conveyor system, it is installed under the belt to detect the material with high metal content, and sends the injection command to the corresponding nozzle, so that it can perform parabolic motion under the combined action of inertia and injection force. Falling to the metal discharge port, the metal-free or low-metal material falls to the non-metal discharge port to separate the slag and steel.

[0015] The stainless steel slag with a particle size of 0-15mm and a magnetic induction intensity of 9500 Gs on the surface of the magnetic drum is sent to the double-layer ...

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PUM

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Abstract

The invention discloses a method for sorting stainless steel slag, which belongs to the field of metallurgy steel slag processing. The method is characterized in that weak-magnetic stainless steel slag of which the particle diameter is 15-80mm is subjected to metal sensing sorting, and strong-magnetic stainless steel slag of which the particle diameter is 0-15 and the magnetic induction density is 9500Gs is subjected to high-strength magnetic separation. After the steel slag is sorted with the method disclosed by the invention, the metal content of the slag steel is more than 82%, the metal yield is 98%, and the metal content of tailings is less than 2%.

Description

Technical field: [0001] The invention belongs to the field of metallurgical steel slag treatment, and in particular relates to a sorting method for stainless steel slag. Background technique [0002] The slag steel obtained after the steel slag treatment in the stainless steel production process is generally recycled only through manual roughing. The remaining tailings contain a large amount of metals, which are discharged with industrial waste because they cannot be recycled. On the one hand, a large amount of precious metal resources are wasted. On the other hand, Inefficient recovery of metals leads to increased tailings and land occupation. Contents of the invention [0003] The invention proposes a sorting method for stainless steel slag, the purpose of which is to realize the recycling of metal in the stainless steel slag and reduce the metal content in the tailing slag. [0004] The invention adopts the following technical scheme: the stainless steel slag enters th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/02C21B3/06
CPCY02P10/20Y02W30/50
Inventor 高卯根张懋刘雁秋赵鹏伟赵天祥罗胜
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD