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Method for opening steel converter

A steel-making converter and converter technology, applied in the direction of manufacturing converters, can solve problems such as incompatibility, and achieve the effect of strong dephosphorization ability and rapid sintering

Inactive Publication Date: 2014-01-08
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is mainly aimed at the conventional operation used in general converter production, and is not suitable for newly opened top-bottom compound blowing converters.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In Example 1, vanadium-containing whole molten iron is used for smelting. Based on the total weight of the vanadium-containing molten iron, the components are calculated by weight percentage. The C content is 4.35, the Si content is 0.2, the Mn content is 0.2, and the P content is 0.065. The content of V is 0.013, the content of V is 0.3, the content of Ti is 0.1, and the balance is Fe.

Embodiment 2

[0030] In Example 2, vanadium-containing whole molten iron is used for smelting. Based on the total weight of the vanadium-containing molten iron, the components are calculated by weight percentage. The C content is 4.2, the Si content is 0.1, the Mn content is 0.1, and the P content is 0.05. The content of V is 0.005, the content of V is 0.2, the content of Ti is 0.05, and the balance is Fe.

Embodiment 3

[0031] In Example 3, vanadium-containing full molten iron is used for smelting. Based on the total weight of the vanadium-containing molten iron, the components are calculated by weight percentage. The C content is 4.6, the Si content is 0.3, the Mn content is 0.3, and the P content is 0.08. The content is 0.02, the V content is 0.4, the Ti content is 0.15, and the balance is Fe.

[0032] The CaO content in the common lime used in the following examples is 90% by weight; the CaO content in the high magnesium lime is 60% by weight, and the MgO content is 40% by weight.

[0033] In the following examples, in the ferrosilicon alloy, the Si content is about 75% by weight, the Fe content is about 20% by weight, and the C content is about 5% by weight; the C content in the coke is about 90% by weight, and the Si content About 5% by weight; the content of C in the quasi-graphite is about 90% by weight, and the content of Si is about 5% by weight (purchased from Panzhihua Iron and Ste...

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PUM

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Abstract

The invention discloses a method for opening a steel converter. The method for opening the steel converter comprises the following steps in sequence: adding ferrosilicon into the converter, then filling vanadium-containing molten iron into the converter, blowing the molten iron by adopting a converter top and bottom compound blowing way, and adding a temperature increasing agent and auxiliary materials in the molten iron, wherein the blowing condition and the addition amount of each substance are enabled to meet the requirements of the molten steel at the blowing end; and tapping the molten steel obtained through blowing so as to a steel ladle. The adoption of the method disclosed by the invention enables the converter liner to be heated rapidly and sintered well during the steelmaking, enables the converter liner to reach the temperature of the liner during normal smelting, guarantees the smooth production process and ensures that the firstly obtained molten steel can reach the requirements on the quality of the blown molten steel.

Description

technical field [0001] The invention relates to a method for opening a steelmaking converter. Background technique [0002] The furnace age of the converter is an important technical and economic index in the converter steelmaking, and it is an important factor for the benefit of the steelmaking plant. Increasing the furnace life of the converter can not only improve the production efficiency of the converter, reduce the consumption of refractory materials, ensure the operation rate of the continuous casting machine, but also give full play to the comprehensive benefits of the blast furnace, steelmaking, steel rolling and other systems. [0003] The start-up of the converter, that is, the blowing of the first furnace of the converter is of special importance to a furnace operation of the converter. Whether the furnace start-up operation is successful not only has a great influence on the service life of the converter lining, but also has a great influence on the quality of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/28
Inventor 陈永梁新腾曾建华任毅杨森祥李桂军李青春李利刚何为李安林陈均
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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