Sintering ore burdening method

A sintering ore and scheme technology, applied in the field of iron and steel metallurgy, can solve problems such as the difficulty of reasonably and accurately controlling the sintering process, and achieve the effects of reducing experimental workload and labor intensity, small experimental errors, and good experimental reproducibility

Inactive Publication Date: 2011-10-05
重庆慧谷科技有限责任公司
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  • Abstract
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  • Application Information

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Problems solved by technology

Therefore, in practical applications, it is still difficult for this technology to control the sintering process reasonably and accurately.

Method used

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  • Sintering ore burdening method
  • Sintering ore burdening method
  • Sintering ore burdening method

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Experimental program
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Embodiment

[0070] In this embodiment, 8 kinds of iron ores used by an enterprise for sintering are selected, each of which has a different sintering batching scheme. During the analysis and research, the chemical composition and ratio data of the 8 iron ores were analyzed and confirmed by conventional chemical analysis methods. In order to reduce the complexity of the calculation and improve the accuracy, this embodiment only considers the main oxide components in the ore; for the existing form of Fe in the iron ore, according to the ratio of TFe and FeO, it is converted into Fe 2 o 3 and Fe 3 o 4 form. Then, in this embodiment, the binary alkalinity of the sintered ore is preset to be 2.0, and the chemical composition and ratio data of the 8 iron ores are adjusted respectively to obtain 8 groups of sintering batching schemes from A to H. These 8 groups of sintering batching schemes One-to-one correspondence with 8 kinds of iron ore. The chemical composition and proportioning ratio ...

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Abstract

The invention provides a sintering ore burdening method. The method comprises the following steps of: calculating a liquid phase quantity and temperature relationship of a sintering burdening scheme by adopting thermodynamic calculation software Factsage, determining an undetermined scheme according to the liquid phase quantity and temperature relationship, then obtaining a melting shrinkage rate and temperature relationship of the undetermined scheme through a melting characteristic test experiment, and finally judging whether the undetermined scheme belongs to a reasonable scheme according to an initial melting temperature of the undetermined scheme and the fit degree of the liquid phase quantity and temperature relationship and the melting shrinkage rate and temperature relationship. The method of the invention greatly reduces the experiment workload and the labor intensity, overcomes the defect of burdening sintering ores simply by means of subjective experience, can intuitively and accurately reflect the liquid phase generating property of a sintering process, and has small experimental error and good experimental reproducibility compared with a traditional sintering cup experiment; and a sintering burdening scheme obtained by judging the data fit error is suitable for guiding the practical production.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy, in particular to a sinter batching method. Background technique [0002] In the field of iron and steel metallurgy, iron ore powder, coke, flux, etc. are mixed with water, mixed and granulated by a cylindrical mixer to obtain mixture pellets with a certain particle size distribution, and then blast furnace sintered pellets are finally obtained by ventilating and sintering on a trolley. Sinter required for iron. During sintering, fuel combustion produces a high-temperature zone, a series of physical and chemical reactions occur in the high-temperature zone, and part of the fusible material in the mixture softens and melts to produce a certain amount of liquid phase, which wets other unmelted ore particles; The high-temperature zone continuously moves towards the direction of negative pressure under the action of the draft. After experiencing high temperature, as the temperature decreases,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16G06F17/50
Inventor 吕学伟白晨光邓青宇邱贵宝张生富扈玫珑
Owner 重庆慧谷科技有限责任公司
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