High-efficiency economic secondary treatment process for steel slag

A secondary treatment, steel slag technology, applied in grain processing, sieves, grids, etc., can solve the problems of low recovery rate of steel slag and complicated process, and achieve high utilization rate of tailings, simple process, and recovery rate of slag steel. high effect

Active Publication Date: 2014-08-27
WISDRI ENG & RES INC LTD
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Problems solved by technology

In order to reduce the crushing pressure, the hot steel slag in the molten state is granulated as much as possible by pretreatment methods such as hot splashing and hot stuffiness, and then through mechanical

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  • High-efficiency economic secondary treatment process for steel slag

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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] like figure 1 , the embodiment of the present invention provides an efficient and economical steel slag secondary treatment process, comprising the following steps:

[0022] Step 1: The steel slag after being processed in the steel slag hot stuffy workshop enters the first overturning grid sieve for screening, and the materials on the screen are magnetically separated by an electromagnetic chuck, and the selected slag steel falls in the slag steel groov...

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Abstract

The invention relates to a high-efficiency economic secondary treatment process for steel slag. The process comprises the following steps: step 1, allowing steel slag processed in an enclosed steel slag heating workshop to enter a first overturning grate for screening and carrying out magnetic separation on materials on the grate by using an electromagnetic chuck; step 2, allowing materials below the grate to enter a first belt magnet separator for magnetic separation and allowing non-magnetic steel slag to enter a hydraulic jaw crusher for crushing; step 3, allowing the material processed by the hydraulic jaw crusher to enter a second vibrating screen for screening and allowing materials below the second vibrating screen to enter a second belt magnet separator for magnetic separation so as to obtain magnetic separation powder and tailing powder; and step 4, allowing materials on the second vibrating screen to enter a rod mill for rod milling, allowing materials having undergone rod milling to enter a third vibrating screen for screening and allowing materials below the third vibrating screen to enter the second belt magnet separator for magnetic separation so as to obtain magnetic separation powder and tailing powder. The process provided by the invention can maximumly recover steel slag, has a high slag steel recovery rate and a high tailing utilization rate and is simple and easily practicable.

Description

technical field [0001] The invention relates to an efficient and economical steel slag secondary treatment process, which can be widely used in the recovery and treatment of converter steel slag, desulfurized steel slag, casting residue, etc., and belongs to the technical field of resource recovery and utilization of steelmaking and metallurgical steel slag. Background technique [0002] At present, steel slag is a by-product of steelmaking, and its output is about 10-20% of the molten steel. Steel slag contains about 10% iron slag. If it is not treated, it will not only cause a large amount of slag steel loss every year, but also discharge slag powder and bring harm to the surrounding environment. Therefore, the processing and comprehensive utilization of steel slag can be realized, and the waste slag can be turned into useful products. , not only to ensure the normal production of iron and steel enterprises, the need to save energy, but also the urgent need for comprehensi...

Claims

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Application Information

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IPC IPC(8): C21B3/04B03C1/00B07B1/00B07B1/28B02C1/02
CPCY02W30/50
Inventor 张燕涛陈鹏鄢起红付秀芳尚文杰
Owner WISDRI ENG & RES INC LTD
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