A method for producing metallurgical coke using coal and rock indicators
A technology for the production of metallurgy and indicators, applied in the coking oven, petroleum industry, etc., can solve the problems that coal petrology can not be used to guide coal blending coking, and coal blending coking is difficult to operate, so as to reduce resource consumption, benefit costs, and be easy to use. Applied effect
Active Publication Date: 2018-04-24
MAGANG (GROUP) HOLDING CO LTD +1
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Problems solved by technology
Solve the problem that coal blending coking under the guidance of coal petrology theory is difficult to operate in production, and the advantages of coal blending coking under the guidance of coal petrology cannot be brought into play
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[0027] The present invention is described in detail below, which is a preferred embodiment among various implementations of the present invention.
[0028] By controlling the coal and rock index of the blended coal and its conventional process index, the fat coal and coking coal are controlled in an appropriate ratio range. On the basis of the top-charging coal coking process, a coking coal blending method that maintains high-strength metallurgical coke is realized. The conventional indicators referred to here mainly refer to the ash content, sulfur content, volatile matter and caking index of the blending coal, and the coal-rock index of the blending coal refers to the distribution interval of the maximum reflectance value of the vitrinite group of the blending coal (R max Between 0.9 and 1.5%) range. Here, the volatile content index V of the blended coal is selected daf , cohesion index cohesion index G and the maximum thickness of the gelatinous layer Y, the coal and rock ...
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Abstract
The invention relates to a method of producing metallurgical cokes by utilizing coal rock indexes. The method comprises the following steps: setting and controlling conventional indexes of mixed coals; setting and controlling the coal rock indexes of the mixed coals; and controlling the coal rock indexes and the conventional indexes of the mixed coals so as to control fat coals and coking coals within a proper proportion limit. According to the method disclosed by the invention, by controlling the coal rock indexes and the conventional indexes of the mixed coals, the fat coals and the coking coals are controlled within the proper proportion limit, so that on the basis of a top coal loading coking process, a coking coal blending method of maintaining high-strength metallurgical cokes is realized, and the problems that coking coal blending guided by a coal petrology theory is difficult to operate in production, and the advantages of coking coal blending guided by coal petrology can not be exerted are solved.
Description
technical field [0001] The invention relates to a coking coal blending method, in particular to a coking coal blending method for producing high-quality metallurgical coke with coal rock index. Background technique [0002] Although my country's coal resources are relatively rich, coking coal only accounts for 29% of the resources, while the coking coal and fat coal resources that are indispensable for coking are even less, accounting for 23% and 12% of the coking coal resources respectively, but the production of metallurgical coke requires input The proportion of coking coal and fat coal is usually more than 50%. With the large-scale blast furnace, large-volume blast furnaces have higher requirements on the quality of metallurgical coke. Since many coking coal blending companies still mainly use empirical coal blending, in order to produce high-quality metallurgical coke, they often increase the blending ratio of fat coal and coking coal. The method can be realized, but it...
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IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 杨建华郑明东朱乐群沈茵曹永中方东霞
Owner MAGANG (GROUP) HOLDING CO LTD