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| Influence of Coal Modifying Additive Added into Coal Blend on Coke Quality |
| Hui TIAN Zi-zong ZHU 兰天 Lan Tian |
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Abstract The coking test of blending non-coking coal was conducted on 40 kg coking-oven in NISCO. The influence of coal modifying additive added into coal blend on blend coal and coke quality is studied. The blending and coking test is carried out with different quantity of coal modifying additive added into coal blend. The experimental results showed the optimal proposal of coal blending：non-coking coal added up to 15%(its size under 3mm) and zzz added to 0.10%。 In optimum coal blending proposal, the coke quality produced from coal blend with additive comparing with the coke quality produced from coal blend without any additive. Coke ash is increased by 0.28%, sulfur essentially unchanged, the crushing strength is increased by 14.35%, and the Wear-resistant strength is reduced by 6.0%, the reactivity is reduced by 5.5%, the strength after reaction is increased by 5.93%. The experimental results show that metallurgical coke cold strength and thermal index are similar to the coke quality produced from coal blend in producing of NISCO.
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Received: 16 September 2008
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2009, Vol. 1 