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Quantitative quality evaluation method for coking coal

A technology for quantitative evaluation and coking coal, used in material inspection products, fuel oil testing, etc., can solve the problems of inability to quantitatively evaluate the quality of coking coal, the impact of stable production of metallurgical blast furnaces, and quality differences, and achieve outstanding substantive characteristics and simple applicability. Clear, significant improvement

Inactive Publication Date: 2014-07-23
JIGANG GRP
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AI Technical Summary

Problems solved by technology

The complexity of the quality of coking coal itself causes sometimes the quality of coke produced by the same type of coal to be different, which has a certain impact on the stable production of metallurgical blast furnaces
In order to improve the scientificity of coal blending and fully understand the properties of coking coal at various mine sites, domestic coking enterprises have intensified comprehensive research and evaluation on the quality of coking coal. However, these evaluations are all qualitative evaluations of the quality of coking coal from different aspects, and it is impossible to achieve an overall quantitative evaluation of the quality of coking coal. Guidance on coking coal procurement and subsequent production

Method used

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Embodiment Construction

[0021] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation manner.

[0022] A method for quantitative evaluation of coking coal quality in this program is characterized in that it includes the following steps:

[0023] 1) Determine the evaluation parameters for coking coal, such as ash (Ad), sulfur (St), volatile matter (Vdaf), cohesion index (G value), and maximum thickness of colloidal layer (Y value);

[0024] 2) Assign quantitative coefficients to each evaluation parameter, ash (Ad) is K1, sulfur (St) is K2, volatile (Vdaf) is K3, cohesion index (G value) is K4, and the maximum thickness of the gelatinous layer (Y value) is K5;

[0025] 3) Use a small coke oven to test coking coal to obtain the crushing strength M 40 , abrasion resistance M 10 , thermal reactivity CRI, and post-reaction strength CSR; when testing coking coal, only a single type of coal is used for coking.

[0026]...

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Abstract

The invention provides a technical scheme of a quantitative quality evaluation method for coking coal. According to the evaluation method with the scheme, each index for qualitative evaluation of the coking coal quality of each mineral occurrence is directly transformed into a quantitative index, qualitative analysis is transformed into quantitative analysis, the quality evaluation value of the coking coal at each mineral occurrence is quickly determined, and the quantitative quality evaluation method is applied to procurement and subsequent production guidance of the coking coal.

Description

technical field [0001] The invention relates to a quantitative evaluation method for coking coal quality. Background technique [0002] The coking coal used in coke oven production in the metallurgical industry is a solid organic combustible sedimentary rock formed by compacting and transforming plant remains under the covering stratum. Due to the complexity of its formation, coking coal is a heterogeneous mixture of organic and inorganic substances. The complexity of the quality of coking coal itself causes sometimes the quality of coke produced by the same type of coal to be different, which has a certain impact on the stable production of metallurgical blast furnaces. In order to improve the scientificity of coal blending and fully understand the properties of coking coal at various mine sites, domestic coking enterprises have intensified comprehensive research and evaluation on the quality of coking coal. However, these evaluations are all qualitative evaluations of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22
Inventor 纪同森刘成雷齐婳毕思东马永胜李徳瑾董连宝许明常宇吴平
Owner JIGANG GRP