On-line KR desulfuration residue treatment device and method applied to hot metal pretreatment process

Abstract

The invention discloses an on-line KR desulfuration residue treatment device applied to hot metal pretreatment process. The on-line treatment device comprises a breaking-up system, a residue cooling system, a dedusting system, a walking system and an electronic control system, wherein the walking system is arranged at the bottoms of the breaking-up system and the residue cooling system, and a residue receiving bucket is arranged at the front end of the breaking-up system; KR desulfuration residues enter the on-line treatment device directly after being subjected to KR desulfuration treatment by the hot metal pretreatment process, and the hot KR desulfuration residues at a high temperature enters the breaking-up system through the residue receiving bucket; the breaking-up system is connected with the residue cooling system which is provided with a double-cooling system. Compared with the prior art, the on-line KR desulfuration residue treatment device can perform on-line KR desulfuration residue treatment and break up the KR desulfuration residues in a thermal state; and by virtue of a quick cooling process, the quality of iron particles is improved, the content of impurities in the iron particles is greatly reduced, and the production efficiency is improved. The on-line KR desulfuration residue treatment device causes tiny environment pollution, is simple and convenient to operate and maintain, and has a high automation degree.

Description

technical field [0001] The invention belongs to the technical field of manufacturing special equipment used in the molten iron pretreatment process, and in particular relates to a KR desulfurization slag online processing device and method thereof used in the molten iron pretreatment process. Background technique [0002] In the smelting industry, the KR method desulfurization is usually used for the pretreatment process of molten iron. The so-called "KR method desulfurization" is a mechanical stirring desulfurization method, which was successfully developed by Japan in 1965. [0003] At present, steelmaking plants will produce a large amount of desulfurization during the pretreatment of hot metal desulfurization by the KR method. If the desulfurization slag is not treated, it will increase the cost of steelmaking production and form solid waste, wasting resources and polluting the environment. Therefore, steelmaking plants are Slag disposal facilities must be provided. [...

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Problems solved by technology

[0009] The technical idea of ​​the present invention is to solve the above-mentioned technology that is not suitable for on-line processing of KR desulfurization slag; the treated KR desulfurization slag contains high sulfur content in slag-iron inclusions and low recovery rate of slag-iron, and the existing equipment is not very specific , long treatment period, large land occupation, heavy pollution, high energy consumption, low efficiency and other technical problems, to provide a KR desulfurization slag online treatment device and method applied in the molten iron pretreatment process, the main idea is that the whole treatment system in On a movable track flat car, directly use the track of the original rear slag removal tank car. After the front slag removal tank receives the front slag removal, the system enters the slag removal area and moves to the bottom of the ladle. When the dust removal and exhaust port is in place, start the equipment , to directly process the slag and molten iron after KR desulfurization treatment; after KR slag enters the equipment, the high-temperature hot KR desulfurization slag enters the dispersing system through the slag receiving hopper, and after being dispersed, it enters the cooling roller and is driven by the rotating The cooling roller cools the slag particles indirectly, and the frequency conversion motor controls the speed and temperature of the cooling roller to control the slag discharge speed and temperature, and the cooled slag particles are classified and collected by the screening device

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