Steelmaking desulfurization slag treatment system and steelmaking desulfurization slag treatment method

Abstract

The invention discloses a desulfurization slag treatment system and a desulfurization slag treatment method. The system comprises a screening device, a first shot blasting slag-iron separation chamber, a first separator, a second shot blasting slag-iron separation chamber and a second separator, wherein the screening device divides desulfurization slag into fine shots and coarse shots; the coarse shots are transmitted to the first shot blasting slag-iron separation chamber, and the first shot blasting slag-iron separation chamber is provided with a coarse shot classifier and a fine shot collector; the fine shots are transmitted to the first separator; the coarse shots which come from the coarse shot classifier of the first shot blasting slag-iron separation chamber are transmitted to the second shot blasting slag-iron separation chamber; and the fine shots which come from the fine shot collector of the first shot blasting slag-iron separation chamber are transmitted to the second separator. The fine shots which come from the first separator and the coarse shots which come from the screening device collide at high speed in the first shot blasting slag-iron separation chamber by using a shot blasting device; and the fine shots which come from the second separator and the coarse shots which come from the first shot blasting slag-iron separation chamber collide at high speed in the second shot blasting slag-iron separation chamber by using the shot blasting device.

Description

technical field [0001] The invention belongs to the field of smelting and steelmaking, and relates to a steelmaking desulfurization slag treatment system and treatment method, in particular to a steelmaking desulfurization slag treatment that can improve the quality of steelmaking desulfurization slag to benefit the recycling of desulfurization slag systems and methods. Background technique [0002] In the steelmaking process, in order to reduce the sulfur content in the steel, the desulfurization process must be adopted in the steelmaking process. Therefore, iron and steel enterprises have to produce a large amount of desulfurization slag every year. Most of the desulfurization slag treatment in the prior art uses simple screening. Classification process or mixed with other steel slag for separation to recycle steel for reverse steelmaking. [0003] However, the main problems in these treatment methods in the prior art are: (1) dust is generated during the treatment proces...

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Problems solved by technology

[0003] However, the main problems in these treatment methods in the prior art are: (1) dust is generated during the treatment process, which has a great impact on the surrounding environment; (2) a large amount of sulfur-containing graphite powder is attached to the surface of the large slag iron after treatment , if the large sulfur-containing slag and iron are directly returned to steelmaking, it will have an adverse effect on the control of steelmaking sulfur; (3) The graphite carbon contained in the desulfurization slag has not been effectively recycled

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