Coke quality evaluation method
A coke quality and evaluation method technology, applied in the direction of complex mathematical operations, instruments, data processing applications, etc., can solve the problems of a large number of indicators, the inability to objectively and comprehensively reflect the real quality of coke, and large human-subjective factors, so as to reduce ironmaking cost effect
Pending Publication Date: 2021-08-27
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
"Technical Research on Coke Quality Evaluation System of Chenggang Blast Furnace" and other studies assign different weights to each index of coke for scoring and evaluation. There are many human-subjective factors, a large number of indicators and overlaps between the indicators, which cannot objectively and comprehensively reflect the real quality of coke. quality
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[0034] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0035] figure 2 The coke quality evaluation method flowchart that the embodiment of the present invention provides, this method comprises the following steps:
[0036] S1. Establish an evaluation index system for coke quality.
[0037] In a statistical period, the evaluation index that can reflect the quality of coke is selected from the production inspection system. Coke evaluation indicators are divided into three categories: cold strength index, hot state performance index, and physical and chemical index. Among them, the cold strength index includes: crushing strength M 40 and abrasion resistance M 10 ; Thermal performance ...
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The invention discloses a coke quality evaluation method. The method comprises the following steps: establishing a coke quality evaluation index system; forming an original data matrix X by the evaluation indexes of the coke samples in the period, and performing standardized dimensionless processing on the original data matrix X to obtain a standardized matrix Z; calculating a correlation coefficient of each evaluation index in the standardized matrix Z, and constructing a correlation coefficient matrix R; calculating characteristic values and characteristic vectors of the correlation coefficient matrix R, and constructing a comprehensive characteristic index based on one characteristic vector; and determining the first p comprehensive characteristic indexes with high variance contribution rate, and calculating the weights of the first p comprehensive characteristic indexes to obtain the comprehensive evaluation index of the coke quality. The method overcomes the defects that human subjective influence factors are large, the number of indexes is large, the indexes are overlapped, and the like, converts a plurality of coke quality indexes into a plurality of comprehensive characteristic indexes on the premise that little information is lost by utilizing the dimensionality reduction idea, and establishes an evaluation method for comprehensively reflecting the quality of coke.
Description
technical field [0001] The invention belongs to the technical field of coke for blast furnace ironmaking, and more specifically, the invention relates to a coke quality evaluation method. Background technique [0002] Coke is an essential fuel for blast furnace ironmaking, and its quality directly affects various technical and economic indicators of the blast furnace. Coke mainly plays the role of exothermic agent, reducing agent, carburizing agent and material column skeleton in the blast furnace. With the continuous improvement of ironmaking technology, the amount of coal injection in blast furnaces continues to increase, and the role of coke as a heating agent and reducing agent is partially replaced by injection of pulverized coal. The skeleton effect is more important in the smelting process. In the blast furnace, coke is affected by mechanical effects such as collision, extrusion, and wear, and is also affected by chemical effects such as dissolution reaction, alkali...
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Login to View More IPC IPC(8): G06Q10/06G06F17/18G06F17/16
CPCG06Q10/06395G06F17/16G06F17/18
Inventor 李杰李小静宋灿阳李帮平张晓萍王志堂王思维刘英才
Owner MAANSHAN IRON & STEEL CO LTD