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Control method of pellet production

A control method and pelletizing technology, which is applied in the field of iron and steel smelting, can solve the problems of inaccurate evaluation of iron ore powder pelletizing performance, poor quality of pellets, etc., and achieve the effect of improving the quality of pellets

Active Publication Date: 2020-08-21
SHOUGANG CORPORATION
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The invention provides a control method for pellet production to solve or partly solve the technical problem of inaccurate evaluation of the pelletizing performance of existing iron ore powder, resulting in poor quality of green pellets during pellet production

Method used

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Embodiment Construction

[0040] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0041] The calculation method of an existing ore powder spheroidizing index K is as follows:

[0042]

[0043] Among them, W f is the maximum molecular water content of mineral powder, %; W m is the capillary water content of mineral powder, %.

[0044] However, in actual production, the ball forming index calculated according to the above formula cannot accurately evaluate the quality of green balls after mineral powder is balled. In response to this problem, the inventor found that the reason is that the existing empirical formula only considered the influence of molecular water and capillary water of iron ore powder, but did not consider the impact of other basic powder propertie...

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Abstract

The invention discloses a control method of pellet production. The method comprises the steps that basic performance parameters of iron ore powder are obtained, and the basic performance parameters comprise molecular water content, capillary water content, iron ore powder bulk density, iron ore powder true density and specific surface area; a comprehensive index K of iron ore powder pelletizationis determined according to the basic performance parameters; the pelletizing performance of the iron ore powder is determined according to the value of the comprehensive index K of the iron ore powderpelletization; and a corresponding preset process for pellet production is adopted according to the pelletizing performance of the iron ore powder. According to the above control method, the pelletizing performance of the iron ore powder can be judged more accurately, so that the corresponding preset process is adopted to control the pellet production, and the quality of fresh pellets of pelletsis significantly improved.

Description

technical field [0001] The present application relates to the technical field of iron and steel smelting, in particular to a control method for pellet production. Background technique [0002] As the whole society attaches great importance to energy conservation and environmental protection, especially under the situation that the supply-side structural reform of the iron and steel industry is getting deeper and deeper, pellets have a series of advantages compared with sintering ore, such as high grade, less emissions, and less pollution. As a result, the entire iron and steel industry has paid more and more attention to the pelletizing process, and the proportion of pellets used in blast furnace raw materials is getting higher and higher, gradually changing from the batching of blast furnaces to the main ingredient. The pelletizing process is an important process in the production of pellets. Its purpose is to pass the mixture of iron ore powder and various additives throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/243
CPCC22B1/2406C22B1/2413C22B1/243
Inventor 田筠清青格勒张彦赵路遥杨涛
Owner SHOUGANG CORPORATION
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