Mixing method of coking coal
A technology for coking coal and blending, applied in the field of coal chemical industry, can solve problems such as plaguing coking enterprises, and achieve the effects of stabilizing the quality of coke, saving the proportion of coking coal, and reducing the cost of coal blending
Active Publication Date: 2017-11-17
武汉钢铁有限公司
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Problems solved by technology
But at the same time, when coking coal is mixed, how to control the quantitative allocation of mixed coal under the premise of stable coke quality is a difficult problem that plagues coking enterprises.
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[0045] The coal quality analysis results of each single coal are shown in Table 1, and the specific examples of each coal blending scheme are shown in Table 1.
[0046] Table 1 Analysis results of single coal quality
[0047]
[0048] The method realizes coking in the top-loaded coke oven of 6 meters or more under the conditions of no coal humidity adjustment, no briquette, and no tamping, the thermal performance of coke is more than 65%, and the M40% is more than 85%. It solves the problem of mixing Quantitative blending of coking coal, stable coke, saving coking coal ratio, coking coal blending ratio is less than 40%, coal blending method to reduce coal blending cost.
[0049] The cokes obtained in Examples 1 to 6 were all produced in coke ovens over 6 meters long without using coal humidity control, briquette technology and pre-crushing technology. It can be seen from Examples 1 to 6 that when all coking coals are used instead of mixed coking coal, the quality of coke p...
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Abstract
The invention discloses a compounding method of mixed coking coal. The method comprises the following steps: 1) analyzing the coking microstructure of a single coal in the mixed coking coal; Classified into mixed coking coal 1#, mixed coking coal 2# and mixed coking coal 3#; 2) Select other single coking coals and control the quality; 3) Different mixed coking coals are classified for use. According to the coarse-grained mosaic structure, fiber, flake and isotropic structure of a single coal, the present invention divides and allocates the mixed coking coal with the average maximum reflectance standard deviation S>0.1 of the vitrinite, which not only solves the quantitative problem of the mixed coking coal It can also stabilize the quality of coke, save the proportion of coking coal, and reduce the cost of coal blending under the condition of saving the amount of high-quality coking coal to the greatest extent; And the top-loading coking of coke ovens over 6 meters in length, the thermal performance of the obtained coke is >65%, and the M40% is >85%.
Description
technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a compounding method of coking coal. Background technique [0002] At present, the iron and steel industry is in a period of meager profit, and coking enterprises are not immune. Reducing the cost of coal blending is an important shortcut to solve this problem. Among the coking coal resources in China, coking coal is the coal with the best coking performance. It has high cold and hot strength after coking, and is the best coal for coking. Usually, the proportion of coking coal used by coking enterprises reaches more than 45%, and its price is the highest. And it's on an upward trend. In addition, due to the scarcity of coking coal resources and the drive of profit, the phenomenon of coal mixing in the domestic coking coal market is extremely common. Coal washing plants control the volatile content and G value according to national standards, and mix di...
Claims
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IPC IPC(8): C10B57/04
Inventor 项茹张雪红周尽晖薛改凤陈超宋子逵周立鹏孙彬喻秋良陈琳鲍俊芳陈鹏任玉明詹立志王元生陈细涛
Owner 武汉钢铁有限公司