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Ore blending method based on high-temperature metallurgical performance of iron ore powders

A high-performance, high-temperature technology, applied in the field of iron and steel smelting, can solve the problems of poor sintering performance, high randomness, and rising costs, and achieve the effects of improving reducibility, facilitating cold strength, and reducing fuel consumption.

Active Publication Date: 2019-12-20
美匡冶金技术研究院(苏州)有限公司
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Problems solved by technology

The basic method is to mix ore based on experience, which is quite arbitrary, or one loses sight of another, and the goal of cost reduction is achieved but the sintering performance becomes worse or deteriorates, or the sintering performance is optimized but the cost rises sharply, the gain outweighs the gain

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  • Ore blending method based on high-temperature metallurgical performance of iron ore powders

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Embodiment Construction

[0030] The method proposed by the present invention is based on the pyrometallurgical properties of different iron ore powders, through reasonable optimization of ore blending, so that the pyrometallurgical properties of the mixed ore can be kept within a suitable range, which is beneficial to reduce the liquid phase formation temperature during the sintering process, Improve the strength of the binder phase during the sintering process, increase the amount of composite calcium ferrite in the sintered ore, improve the reducibility of the sintered ore, increase the cold-state strength of the sintered ore, reduce fuel consumption, and reduce the cost of mixed ore raw materials.

[0031] Concrete, the ore blending method based on iron ore pyrometallurgical performance of the present invention, comprises the steps:

[0032] S1, iron ore powder selection step, select 10 or more iron ore powders from different origins, and measure the content of chemical components of different iron ...

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Abstract

The invention discloses an ore blending method based on the high-temperature metallurgical performance of iron ore powders. The method comprises selecting a plurality of iron ore powders of differentorigins to test and analyze the high-temperature metallurgical performance of the different iron ore powders; obtaining a mathematical model of high-temperature metallurgical performance values and chemical components through data analysis; matching the advantages and disadvantages of the high-temperature metallurgical performance of the iron ore powders to obtain mixed powders with excellent high-temperature metallurgical performance and suitable for sintering. The method of the invention reveals a relation between the high-temperature metallurgical performance values and the chemical components of the single ore and the mixed ore, optimizes the ore blending based on this, and can obtain mixed ore with excellent high-temperature metallurgical performance, contributes to sintering and an increase in yield, and improves sintering ore quality. In addition, when mixing ore, by means of the complementation of the high-temperature metallurgical performance of different iron ore powders, themethod increases the proportion of non-mainstream low-priced ore, and reduces the cost of sintering raw materials.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to an ore blending method based on the pyrometallurgical properties of iron ore. Background technique [0002] Sintered ore blending is to mix different ore powders according to the requirements of the sintering process, so that the chemical composition of the blended ore meets the index requirements of the sintering blending process. With the reduction and depletion of high-quality iron ore resources, the current iron ore used by enterprises is diverse and miscellaneous, and the stability of composition and particle size has also deteriorated. There is no enterprise that uses a single ore for sintering production, so it is necessary to combine different varieties The ore is optimized and mixed, and the mixed ore with stable particle size and excellent metallurgical properties is sintered for production. However, how to mix different types of iron ore to produce a b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/70G16C20/30C22B1/16
CPCG16C20/70G16C20/30C22B1/16Y02P10/20
Inventor 王永红于原浩孙立伟刘广秦玉栋
Owner 美匡冶金技术研究院(苏州)有限公司
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