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Method for applying scorification material supplementary material to convertor steelmaking

A converter steelmaking and converter steel slag technology, applied in the field of metallurgy, can solve problems such as efficient material utilization, and achieve the effects of increasing metal yield, improving slagging performance, and reducing blowing loss

Inactive Publication Date: 2010-09-01
攀钢集团成都钢铁有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing research and reports focus on the primary utilization of converter steel slag, and have not really been utilized as an efficient material.

Method used

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  • Method for applying scorification material supplementary material to convertor steelmaking
  • Method for applying scorification material supplementary material to convertor steelmaking
  • Method for applying scorification material supplementary material to convertor steelmaking

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Embodiment Construction

[0010] The slagging material auxiliary materials used in the application of the present invention are composed of the following components by weight ratio: 8.0-9.5 parts of converter steel slag, 0.5-2.0 parts of additives; wherein, the additives are composed of the following components in weight percentage Composition: Na 2 CO 3 5.00~10.00%, FeO 70.00~80.00%, BaCO 3 10.00~20.00%; the prepared slagging material auxiliary materials contain the following components in weight percentage: CaO 32.00~45.00%, FeO 20.00~30.00%, BaCO 3 1.00~4.00%, SiO 2 7.00~12.00%, MgO 7.00~9.00%, Na 2 CO 3 0.5-2.00%.

[0011] Na in the additive of the present invention 2 CO 3 、BaCO 3 It has the function of dephosphorization, FeO provides oxygen sites, and also has the function of dephosphorization. The additive used in the present invention can comprehensively play the functions of dephosphorization and slagging, and is a new high-quality auxiliary material for slagging materials.

[0012...

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Abstract

The invention relates to a method for applying auxiliary material of slagging material in the converter steel-making, pertaining to the field of metallurgy. The auxiliary material of the slagging material can be served as a dephosphorizing agent and a slag-melted agent, including: 8.0-9.5 portions by weight of converter steel slag and 0.5-2.0 portions by weight of additive, wherein, the additive includes 5.00-10.00 percent by weight of Na2CO3, 70.00-80.00 percent by weight of FeO and 10.00-20.00 percent by weight of BaCO3. The production of the auxiliary material of the slagging material by adding the additive into the converter steel slag has a plurality of effects, such as realization of recycling of the converter steel slag, which can not only reduce the total amount of waste slag fromsteel-making but reduce consumption of the existing slagging material such as lime and dolomite, improve slagging performance, increase dephosphorization rate by 5.00 to 8.00 percent, reduce the steel slag TFe by 3.00 to 5.00 percent after the steel smelting as well as the blowing damage by about 0.3 percent and increase the metal yield.

Description

technical field [0001] The invention relates to a method for applying slagging auxiliary materials to converter steelmaking, and belongs to the field of metallurgy. Background technique [0002] Converter steel slag is one of the "three wastes" of the iron and steel industry. It contains a certain amount of steel scrap and useful component resources such as CaO, FeO, SiO2, and MgO. environmental pollution. The recycling of converter steel slag can reduce the total amount of waste slag in steelmaking plants and save a lot of slagging materials. Therefore, the comprehensive utilization of converter steel slag has been incorporated into an important link in the development of circular economy in the iron and steel industry. [0003] At present, the comprehensive utilization rate of converter steel slag in my country is only 36%, which is mainly used for recycling slag iron, metallurgical raw materials, building materials, and pre-desiliconization and dephosphorization of molte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/28C21C7/04
Inventor 陈坤黄正全易邦伦张珉滕建明
Owner 攀钢集团成都钢铁有限责任公司
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