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First grade metallurgical coke produced from ordinary coking coal and its production method

A technology of raw material composition and coking coal, applied in coking ovens, petroleum industry, etc., can solve the problems of insufficient resources and high cost of primary coke, and achieve the effect of improving crushing strength and strength index

Inactive Publication Date: 2009-10-07
上海长德冶金工程技术有限公司 +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a raw material composition and production method for producing first-grade metallurgical coke with ordinary coking coal, mainly to solve the technical problems of high cost and insufficient resources for producing first-grade coke with high-quality coal

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  • First grade metallurgical coke produced from ordinary coking coal and its production method
  • First grade metallurgical coke produced from ordinary coking coal and its production method
  • First grade metallurgical coke produced from ordinary coking coal and its production method

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Embodiment Construction

[0015] Embodiment and comparative example are carried out in the test coke oven of 20 kilograms, and the carbonization chamber width of test coke oven is 200mm, and effective height is 400mm, and the effective volume of carbonization chamber is 0.032 cubic meter, and test coke oven adopts silicon molybdenum rod electric heating, The temperature is controlled by a single-chip microcomputer, and the top of the furnace is directly charged with coal. The main operating indicators of the mature coke oven are as follows:

[0016] Furnace coal weight: 23 kg

[0017] Furnace coal moisture content: 10±1%

[0018] Furnace coal crushing particle size: ≤3mm part accounts for more than 75% of the total

[0019] Coke cake center temperature: >950°C; combustion chamber temperature: 1060°C

[0020] Coking time: 8 hours

[0021] The coke discharged from the test coke oven was subjected to wet coke quenching with water, and after the coke was dried, it was dropped twice, and then the coke si...

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Abstract

The invention relates to a coke and a production method thereof, in particular to a first-grade metallurgical coke produced from ordinary coking coal and a production method thereof. It mainly solves the technical problems of high cost and insufficient resources for producing primary coke with high-quality coal. The technical solution of the present invention is: a first-grade metallurgical coke produced by ordinary coking coal, the weight percentage of its composition is: fat coal: 15-20%, 1 / 3 coking coal: 10-20%, coking coal: 40-20% 50%, gas coal: 15-25%, petroleum coke: 5-8%. Among them: blended coal particle size ≤ 3mm accounts for more than 75% of the total, petroleum coke ash (Ad) ≤ 0.55%, petroleum coke sulfur (St, ad) ≤ 0.50%, petroleum coke volatile content (Vdaf) ≤ 11.5%. By using the invention, adding petroleum coke to ordinary coking coal can produce metallurgical primary coke with low ash, low sulfur and good cold and hot strength.

Description

Technical field: [0001] The invention relates to coke and its production method, in particular to a raw material composition for producing primary metallurgical coke from common coking coal and its production method. Background technique: [0002] Metallurgical coke is a product produced by heating coking coal batch materials in a coke oven in isolation from air at high temperature. Metallurgical coke is a necessary fuel for blast furnace ironmaking production, and it also plays the role of reducing agent, energy source and skeleton support in ironmaking production . Therefore, metallurgical coke used for ironmaking is required to have low ash and sulfur content, good maturity, cold strength and hot strength. The quality of metallurgical coke is divided into three grades according to the national standard, see Table 1: [0003] Table 1 Metallurgical coke classification standard GB / T1996-2003 [0004] [0005] According to the quality requirements of metallurgical coke,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/04
Inventor 陈德浩吴仁祺蔡英杰刘森
Owner 上海长德冶金工程技术有限公司
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