Coking blending method for controlling volatile compound content of blended coal
A technology of volatile matter and coal blending, applied in coking ovens, petroleum industry, etc., can solve the problems of unguaranteed coke quality and increased cost of coal blending, and achieve the effect of excellent quality and uniform coke formation
Inactive Publication Date: 2014-12-10
武汉钢铁有限公司
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AI Technical Summary
Problems solved by technology
Or simply substituting lean coal and coking coal for gas coal, gas-fat coal or fat coal will not only greatly increase the cost of coal blending, but also the quality of the obtained coke cannot be guaranteed
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0018] Gas fertilizer coal: volatile fraction is 40%, maximum fluidity is 83680ddpm, solid-soft temperature range is 105°C;
[0019] Fatty coal: the volatile fraction is 30%, the maximum fluidity is 62743ddpm, and the solid-soft temperature range is 103°C;
[0020] 1 / 3 coking coal 1#: volatile matter is 31%, Y value is 20,
[0021] 1 / 3 coking coal 2#: volatile matter is 34%, Y value is 15,
[0022] 1 / 3 coking coal 3#: volatile matter is 31%, Y value is 15,
[0023] Coking coal 1#: volatile matter is 24%, G value is 86,
[0024] Coking coal 2#: volatile matter is 24%, G value is 83,
[0025] Coking coal 3#: volatile matter is 24%, G value is 79,
[0026] Lean coal: volatile fraction 15%, G value 45
[0027] Blend the above coal types according to the following proportions:
[0028] Gas fat coal: 5%; fat coal: 11%; 1 / 3 coking coal 1#: 15%, 1 / 3 coking coal 2#: 9%, 1 / 3 coking coal 3#: 3%; coking coal 1#: 25%, Coking coal 2#: 17%, coking coal 3#: 5%; lean coal: 10%.
[0029...
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Abstract
The invention discloses a coking blending method for controlling volatile compound content of blended coal. According to the method, the volatile compound content of the blended coal is controlled at 26-26.5% through gas fat coal, fat coal, 1 / 3 coke, coke and lean coal; the volatile compound content of the gas fat coal is 39-41%, the maximum fluidity is greater than or equal to 80000ddpm, and the solid-softening temperature interval is greater than or equal to 100 DEG C; the volatile compound content of the fat coal is 29-32%, the maximum fluidity is greater than or equal to 60000ddpm, and the solid-softening temperature interval is greater than or equal to 100 DEG C; the 1 / 3 coke is divided into 1 / 3 coke 1#, 1 / 3 coke 2# and 1 / 3 coke 3# according to different volatile compound contents and Y values; the coke is divided into coke 1#, coke 2# and coke3# according to different G values; and the volatile compound content of the lean coal is 15-18%, and the G value is greater than or equal to 30, and smaller than or equal to 60. The method can effectively control the volatile compound content of the blended coal at 26-26.5% under the condition of adding high-volatile-compound-content gas fat coal, and can lower the coal blending cost and ensure the coke quality on the premise of ensuring high demand for coke yield.
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 controlling the volatile content of blended coal. Background technique [0002] my country is a big country of steel production, and all iron and steel enterprises are equipped with coking plants. With the continuous fluctuation of the steel market, most enterprises will effectively control the output of pig iron. In order to save costs, the output of coke must be balanced with the output of pig iron. The method of controlling coke production is accomplished by controlling the volatile content of blended coal. If it is necessary to increase the coke output, then reduce the volatile content of the blended coal; on the contrary, if it is necessary to reduce the coke output, then increase the volatile matter of the blended coal. [0003] The raw material for coke production, that is, blended coal, is a combination of vario...
Claims
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IPC IPC(8): C10B57/04
Inventor 宋子逵薛改凤鲍俊芳项茹张雪红任玉明陈鹏詹立志陈细涛
Owner 武汉钢铁有限公司