CN110964876A

CN110964876A - Method for reducing alloy consumption of converter by using tail billet

Info

Publication number: CN110964876A
Application number: CN201811150517.3A
Authority: CN
Inventors: 韩雨亮; 马进国; 许勇伟; 吴吉桃; 云茂帆; 马忠江; 牛全林; 张会强; 李小平
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2018-09-29
Filing date: 2018-09-29
Publication date: 2020-04-07

Abstract

The invention discloses a method for reducing converter alloy consumption of a tail billet, which comprises the steps of treating the tail billet into a fixed size, placing the tail billet according to components in an argon blowing station process of a converter, adding the calculated tail billet into a steel ladle through a travelling crane after tapping, stirring the tail billet by bottom blowing of the steel ladle, and hoisting the tail billet to a next process for treatment after the tail billet is melted, so that the precious alloy consumption is reduced. By changing the disposal path of the tail billet, alloy elements added in the tail billet are converted into the components of qualified billets for the second time, the consumption of various precious alloys in the billet adding furnace is reduced, and the cost control of a converter is reduced; meanwhile, the tail billet is not subjected to secondary smelting in a converter, so that the loss of iron element and the waste of energy medium are reduced.

Description

Method for reducing alloy consumption of converter by using tail billet

Technical Field

The invention relates to a method for reducing alloy consumption of a converter by using a tail billet.

Background

The steel works smelt the variety steel, and the casting blanks such as the head and the tail of the blank, the liquid level fluctuation and the like are all treated by adopting a blank picking mode to ensure the quality of the casting blanks. The original process method is that the waste blanks are processed according to a certain length, then the waste blanks are transported to a waste steel hopper of a converter through a vehicle, and the waste steel is added into the converter again for smelting, so that the loss of iron element is increased through secondary smelting, and the secondary loss of elements such as silicon, manganese, chromium, vanadium and the like in the waste blanks is caused in the oxidation process. With the gradual rise of the price of precious metals, various elements of waste blanks cannot be effectively utilized, so that the process cost is increased, and the environment is damaged by the excessive exploitation increased by the demand of the precious metals.

Disclosure of Invention

The invention aims to provide a method for reducing alloy consumption of a converter by using a tail billet, which can effectively utilize precious alloy elements in the tail billet for the second time, reduce the consumption of the precious alloy and the loss of metal elements and achieve the purposes of cost reduction and efficiency improvement; the tail billet reduces the alloy consumption of the converter, the operation process is simple, and the operation difficulty coefficient and the labor intensity are not increased.

The invention aims to realize the method for reducing the alloy consumption of the converter by the tail billet, the tail billet is firstly treated into a fixed size, the components are arranged according to the fixed positions in the process of an argon blowing station of the converter, the calculated tail billet is added into a steel ladle through a travelling crane after tapping, the steel ladle is bottom-blown for stirring, and the tail billet is lifted to the next process for treatment after being melted, so that the consumption of precious alloy is reduced.

By changing the disposal path of the tail billet, alloy elements added in the tail billet are converted into the components of qualified billets for the second time, the consumption of various precious alloys in the billet adding furnace is reduced, and the cost control of a converter is reduced; meanwhile, the tail billet is not subjected to secondary smelting in a converter, so that the loss of iron element and the waste of energy medium are reduced.

The improvement effect is as follows:

1. various precious metal elements in the variety steel tail billets are effectively utilized by the method for reducing the alloy consumption of the converter through the newly designed tail billets, so that the waste of the secondary smelting process of the converter is avoided, and the production cost is reduced;

2. the method for reducing the alloy consumption of the converter by the tail billet with the novel design avoids the consumption of iron elements in secondary smelting of variety steel tail billets in the converter, reduces the generation amount of solid waste per ton of steel and reduces the environmental pollution;

3. the method for reducing the alloy consumption of the converter through the tail billet with the novel design reduces the consumption of precious metals, reduces the supply and demand relationship, reduces the exploitation amount of the precious metals and plays a certain role in protecting the ecological environment.

The table of the calculation of the converter alloy consumption reduction of the tail stock is shown in table 1.

TABLE 1 calculation chart for reducing converter alloy consumption of tail billet by new design

Detailed Description

A method for reducing alloy consumption of a converter by using tail billets comprises the steps of firstly processing the tail billets into a fixed size, fixedly placing the tail billets according to the components of the tail billets in an argon blowing station process of the converter, adding each calculated tail billet into a steel ladle through a travelling crane after tapping, stirring the tail billets by bottom blowing, and hoisting the tail billets to a next process for processing after the tail billets are melted, so that the consumption of precious alloys is greatly reduced.

Claims

1. A method for reducing alloy consumption of a converter by a tail billet comprises the steps of firstly processing the tail billet into a fixed size, placing the tail billet according to components in an argon blowing station process of the converter, adding the calculated tail billet into a steel ladle through a travelling crane after tapping, stirring the tail billet by bottom blowing of the steel ladle, hoisting the tail billet to a next process after the tail billet is melted, and processing the tail billet to reduce the consumption of precious alloys.