Coking coal blending method for 1/3 coking coal with volatile content of 34% and above

A coking coal and coal blending technology, which is applied in the coking coal blending field of 1/3 coking coal, can solve the problems of coke quality fluctuations, incoming coal quality fluctuations, and inability to distinguish and utilize them

Active Publication Date: 2017-05-17
武汉钢铁有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a coking coal blending method for 1 / 3 coking coal with a volatile content of 34% and above, so as to solve the partial coal quality partial gas coal in the 1 / 3 coking coal. The Y value measurement method cannot be effectively differentiated and utilized, resulting in the problem that the quality fluctuation of incoming coal leads to the fluctuation of coke quality

Method used

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with specific embodiments.

[0012] Coking coal blending method of the present invention carries out according to the following steps:

[0013] (1) Get two kinds of 1 / 3 coking coals, named respectively as 1 / 3 coking coal 1#, 1 / 3 coking coal 2#, carry out G, Y value, volatile matter and Gibbs fluidity index measurement to it, and according to Gibbs fluidity Index measurement data, two 1 / 3 coking coal solid-soft temperature intervals are obtained, and the measured index data are beneficial to Table 1:

[0014] Table 1 Related index data of two kinds of 1 / 3 coking coal

[0015] name G Y / mm V daf / %

Solidification temperature range / ℃ 1 / 3 coking coal 1 #

80 14 37.19 81 1 / 3 coking coal 2 #

79 14 35.62 63

[0016] It can be seen from Table 1 that, according to the conventional G, Y value analysis method, the G, Y values ​​and volatile matter of the tw...

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Abstract

The invention discloses a coal blending coking method of 1 / 3 coking coal with 34% or above of volatile. According to the coal blending scheme, the method comprises the following steps: 1) measuring Gieseler fluidity on 1 / 3 coking coal, selecting 1 / 3 coking coal with a solid-soft temperature range of lower than 70 DEG C, marking with type II 1 / 3 coking coal and selecting 1 / 3 coking coal with a solid-soft temperature range of lower than 85 DEG C and marking with other 1 / 3 coking coal; and 2) carrying out coal blending by using the type II 1 / 3 coking coal according to the following percentage by mass: 1-10% of gas-fat coal, 1-15% of fat coal, 5-10% of type II 1 / 3 coking coal, 10-20% of other 1 / 3 coking coal, 40-45% of coking coal and 10-15% of lean coal. According to the method, solid-soft temperature range in Gieseler fluidity indexes is used for optimizing and subdividing 1 / 3 coking coal, and then in cooperation with a proper coal blending structure, the aim of stabilizing the quality of coking coal is achieved.

Description

technical field [0001] The invention belongs to the technical field of coking coal blending, and in particular relates to a coking coal blending method for 1 / 3 coking coal with a volatile content of 34% or more. Background technique [0002] my country is rich in coal resources, but coking coal resources are in short supply, and the limited coking coal resources are not evenly distributed. Among the proven coal reserves, coking coal reserves account for only 26% of the total coal reserves, coking coal accounts for only 17.57% of coking coal reserves, and fat coal accounts for 10%. In coal blending and coking, coking fat coal should generally account for 50%-60%, and there is a serious contradiction between coking coal resources and demand for coking coal blending. [0003] In order to minimize the use of coking fat coal, reduce production costs and improve coke quality, coking workers in various countries have gradually begun to pay attention to the application research of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/04
Inventor 宋子逵薛改凤陈细涛项茹张雪红鲍俊芳陈鹏任玉明詹立志王元生
Owner 武汉钢铁有限公司
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