Method for reducing converter alloy consumption through tail blanks

Abstract

The invention discloses a method for reducing converter alloy consumption through tail blanks. Firstly, the tail blanks are handled to be in a fixed size and are placed according to the composition inthe process of an argon blowing station of a converter; and after tapping, a travelling crane is used for adding the calculated tail blanks into a steel ladle, the steel ladle is subjected to bottomblowing for stirring, the steel ladle is lifted to a next process to be handled after the tail blanks is melted, and consumption of precious alloys is reduced. By changing the handling path of the tail blanks, alloying elements added in the tail blanks can be subjected to secondary conversion into the composition of a qualified billet, the consumption of the various precious alloys in the chargingtimes is reduced, and the converter control cost is reduced; and meanwhile, the tail blanks is not subjected to converter secondary smelting, and the loss of iron and the waste of energy media are reduced.

Description

technical field [0001] The invention relates to a method for reducing the consumption of converter alloy by tail blank. Background technique [0002] In order to ensure the quality of the slabs smelted in the steelmaking plant, the slabs such as the head and tail of the slab and the fluctuation of the liquid level will be disposed of by picking the slab. The original process method is to process such waste billets according to a certain length, and then transport them to the converter scrap hopper by vehicles, and re-enter the furnace for smelting by adding scrap steel, which increases the loss of iron elements through secondary smelting, and also leads to this. Silicon, manganese, chromium, vanadium and other elements in the waste billet are lost again during the oxidation process. As the price of precious metals gradually rises, various elements of waste blanks cannot be effectively utilized, which not only increases the cost of the process, but also increases the demand ...

AI Technical Summary

Problems solved by technology

The original process method is to process such waste billets according to a certain length, and then transport them to the converter scrap hopper by vehicles, and re-enter the furnace for smelting by adding scrap steel, which increases the loss of iron elements through secondary smelting, and also leads to this. Silicon, manganese, chromium, vanadium and other elements in the waste billet are lost again during the oxidation process

With the gradual increase in the price of precious metals, various elements of waste billets cannot be effectively utilized, which not only increases the cost of the process, but also increases the demand for precious metals and damages the environment due to excessive mining.

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