Method for recycling casting residue

Abstract

The invention discloses a casting slag recovering and recycling method, including the following steps that the liquid casting slag produced during the continuous casting of the slag pot is used; powdering technique is adopted to powder the casting slag; a separating device is used to separate the powdered casting slag into block casting slag and granular casting slag; the granular casting slag isconveyed to a magnetic separator to reclaim the metallic iron therein; the block casting slag is filled in an empty slag pot and padded on the pot bottom; the liquid casting slag produced during the continuous casting of the slag pot is re-used, and the steps are repeated. The invention can avoid the disuse of the produced casting slag, reduce environmental pollution and land occupation; the casting slag can be powdered and used sufficiently, therefore, resource waste is reduced; and the invention also has the advantage of low cost.

Description

technical field [0001] The invention relates to a method for recycling waste slag in the metallurgical industry, in particular to a method for recycling casting residue. Background technique [0002] Metallurgical enterprises produce a large amount of continuous casting waste slag every day. Blocky casting slag refers to a large number of slag blocks produced after continuous casting waste slag is sorted by stuffy tanks. Since the massive cast slag contains a certain amount of iron, the iron can be separated and used after processing, but the cost of residual iron in the processed cast slag is high, and the yield of residual iron is low, so the current treatment method Casting slag is treated as waste slag. There are problems in this method: (1) casting slag as waste steel slag will pollute environmental resources such as water bodies and land; (2) part of the residual iron in casting slag is not utilized, resulting in a waste of iron resources. [0003] Today, when resou...

AI Technical Summary

Problems solved by technology

Since the massive cast slag contains a certain amount of iron, the iron can be separated and used after processing, but the cost of residual iron in the processed cast slag is high, and the yield of residual iron is low, so the current treatment method Casting slag is treated as waste slag

There are problems in this method: (1) casting slag as waste steel slag will pollute environmental resources such as water bodies and land; (2) part of the residual iron in casting slag is not utilized, resulting in a waste of iron resources

[0004] For the purpose of protection, in order to avoid the liquid slag sticking to the slag pot when using the slag pot, generally a layer of converter metallurgical slag is placed on the bottom of the slag pot, but since the converter metallurgical slag can replace the lime solvent and return to the converter for reuse , has greater utilization value, so this will also cause waste