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Blast furnace sintering linked low-cost molten iron preparation method

A production method and low-cost technology, applied in the field of ironmaking production, can solve the problems of low cost and inability to balance the positive and negative effects of using cost-effective iron ore powder

Active Publication Date: 2013-11-06
SHOUGANG CORPORATION
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a low-cost molten iron production method linked to blast furnace sintering, which solves the problem that the prior art cannot balance the positive and negative effects brought about by the use of cost-effective iron ore powder, and ensures the lowest cost of molten iron

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  • Blast furnace sintering linked low-cost molten iron preparation method

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Embodiment Construction

[0045] see figure 1 , a low-cost molten iron production method linked to blast furnace sintering provided by an embodiment of the present invention, comprising the following steps:

[0046] Step 101: According to the different iron-containing grades of sinter, slag basicity, the proportion of furnace charge, and the chemical composition of raw materials other than sinter, respectively calculate the composition of sinter suitable for each iron-containing grade. SiO 2 The mass percentage of SiO 2i and sinter basicity R i ;

[0047] Step 102: According to the sinter composition, SiO 2 The mass percentage of SiO 2i and sinter basicity R i Carry out the sinter cup test to get the sinter price PS of each iron grade i ;

[0048] Step 103: According to the sinter price PS of each iron grade i , to calculate the cost of hot metal raw fuel PHM corresponding to the sinter of each iron grade i ;

[0049] Step 104: From the raw material cost PHM of hot metal corresponding to the...

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Abstract

The invention provides a blast furnace sintering linked low-cost molten iron preparation method. The blast furnace sintering linked low-cost molten iron preparation method comprises following steps: firstly, sinter SiO2 content and sinter alkalinity which match with a blast furnace burden structure are calculated according to sinter with different grades; and then, sintering cup experiment is performed based on sinter composition so as to obtain sinter prices according to experiment results; at last, the sinter prices are put into a molten iron crude fuel cost calculation formula so as to obtain the molten iron crude fuel cost of each sinter grade, and a minimum value is selected from the results so as to obtain the production scheme which possesses a lowest molten iron crude fuel cost. The blast furnace sintering linked low-cost molten iron preparation method is provided by the invention so as to obtain a sinter structure which possesses a lowest molten iron crude fuel cost, and to provide low-cost molten iron production with guarantees.

Description

technical field [0001] The invention belongs to the technical field of ironmaking production, and in particular relates to a low-cost molten iron production method with blast furnace sintering linkage. Background technique [0002] In recent years, China's iron and steel industry has undergone rapid development, the scale of iron and steel enterprises and steel production capacity have expanded rapidly, and market competition has intensified; on the other hand, the price of upstream raw materials and fuels has risen, which has continuously squeezed the living space of iron and steel enterprises. In order to improve the competitiveness and viability of enterprises, on the one hand, domestic iron and steel enterprises optimize product structure, develop high-end products, increase product added value, and increase corporate profits; on the other hand, reduce sinter production costs by developing cost-effective iron ore powder resources, Finally, the purpose of reducing the cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
Inventor 潘文赵志星徐萌马泽军李永新赵霞赵勇裴元东宋文武秦岳义
Owner SHOUGANG CORPORATION
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