Stainless steel slag sorting device and stainless steel slag sorting method

Abstract

The invention relates to the technical field of steel slag treatment in metallurgical industry, and discloses a stainless steel slag sorting device and a stainless steel slag sorting method. The stainless steel slag sorting device comprises a material hopper, a bar screen, a bucket elevator, a powder sorter, a cyclone dust collector and a bag-type dust collector, wherein the powder sorter is externally connected with an air blower; a granule outlet is formed in the bottom end of the powder sorter; a powder outlet is formed in the upper part of a side wall opposite to the material inlet of the powder sorter. According to the stainless steel slag sorting device and the stainless steel slag sorting method, after stainless steel slag raw materials are screened primarily, stainless steel slag is sorted by the powder sorter in a micro-negative-pressure work environment, so that the beneficiation of the granules which contain metal materials and have larger granule size is realized favorably, the powder with smaller granule size is collected by the cyclone dust collector, and dust can be prevented from being exhausted into atmosphere by the bag-type dust collector. By using the stainless steel slag sorting device and the stainless steel slag sorting method, the abrasion of equipment caused by steel slag is reduced; the service life of the equipment is prolonged; the production cost is reduced; meanwhile, the water using amount and the water treatment cost of wet treatment are also reduced; energy is saved; emission is reduced.

Description

technical field [0001] The invention relates to the technical field of steel slag treatment in the metallurgical industry, in particular to a stainless steel slag sorting device and a stainless steel slag sorting method. Background technique [0002] Steel slag is industrial solid waste slag produced in the process of smelting steel. The waste slag produced by steel mills can be divided into two types due to different cooling processes: dry slag and water slag. Generally speaking, there are three components in steel slag: steel grain, iron powder and waste ash. Selecting the steel grain and iron powder through a reasonable process can produce huge economic benefits. [0003] First, the steel slag needs to be ground to break the structure between them and separate them. The equipment used to grind steel slag is ball mill, rod mill, etc. [0004] Domestic metallurgical enterprises usually use wet treatment for stainless steel slag. First, the steel slag is evenly sent to the...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a stainless steel slag sorting device and a stainless steel slag sorting method to solve the problems of easy wear of equipment and high production costs in the wet treatment of stainless steel slag. The present invention is suitable for air separation of stainless steel slag in dry areas

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