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Process for recycling hot refining slag in converter smelting process

A converter smelting and refining slag technology, which is applied in the manufacture of converters, etc., can solve the problems of metal loss, slag treatment cost, refining slag environmental pollution, high steelmaking cost, etc., to reduce power consumption, high promotion value, and reduce converter steel materials The effect of consumption

Pending Publication Date: 2022-05-13
RIZHAO STEEL HLDG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical task of the present invention is to provide a process for reusing hot refining slag in the converter smelting process to solve the problems of slag treatment cost brought by refining slag and environmental pollution caused by refining slag. , and solve the metal loss and heat loss in the refining slag, and reduce the high cost of steelmaking

Method used

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  • Process for recycling hot refining slag in converter smelting process

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] The invention is a technology for reusing hot refining slag in the converter smelting process, which fully utilizes the physical heat of the refining slag and reduces the temperature impact of adding cold refining slag on the converter blowing early stage.

[0027] The thermal state of LF furnace refining slag is utilized in the process of converter smelting such as figure 1 shown, including:

[0028] S1. The molten steel obtained from the LF furnace enters the continuous casting process, and the resulting hot continuous casting ladle casting residual refining slag is divided into two parts for processing, and the molten steel is poured into the slag pot at the part of the molten steel, and the slag is stopped after the steel flow is seen, and the remaining part is refined The slag and molten steel are all folded into the refining ladle...

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Abstract

The invention discloses a technology for recycling hot refining slag in the converter smelting process, and belongs to the field of steelmaking, and the technology comprises the following steps: S1, molten steel obtained in an LF furnace enters a continuous casting process, produced hot continuous casting ladle casting residue refining slag is treated in two parts, and aluminum particles and a low-carbon steel ladle covering agent are put into a slag tank; s2, the slag tank is conveyed to a feeding bay, and the hot-state casting residues in the slag tank are poured into a full molten iron tank; s3, molten iron in the molten iron tank is mixed into the converter; and S4, molten steel obtained in the converter enters an LF furnace for refining. The problems of metal loss and heat loss in the refining slag can be solved, and the high steelmaking cost is reduced.

Description

technical field [0001] The invention relates to a steelmaking process technology, in particular to a process for reusing hot refining slag. Background technique [0002] After the continuous casting of molten steel, the refining slag in the ladle is unavoidable. In the prior art, the remaining refining slag of the continuous casting ladle is divided into two parts to be processed, and a part of the molten steel is poured into the slag tank, and the slag is stopped after the steel flow is seen, and the remaining part of the refining slag and molten steel are folded into the refining ladle and repeated. use. It is poured into the slag tank and transferred to the slag treatment process to produce cement after treatment. [0003] Although the subsequent slag treatment realizes the reuse of refining slag components, but: ①The slag treatment process requires various methods such as hot stuffing, pan splashing, drum, wind crushing, etc., and the equipment capital investment for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C5/36
CPCC21C5/28C21C5/36
Inventor 任涛刘林赵占山朱韶哲王涛胡正祥陈洪民赵梓云武剑王哲陈旭杜建周伟吴玉强
Owner RIZHAO STEEL HLDG GROUP
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