沥青配比与焦炭质量之间的关系

为了提高焦炭强度及粒度,利用40 kg试验焦炉研究了不同沥青添加方式(型煤中添加或直接添加)以及不同沥青添加比例对配煤焦炭质量的影响。研究结果表明,将沥青按照6%的比例配入型煤,随着型煤配比的逐步增加,焦炭的强度和粒度均明显改善,且与沥青比例存在很好的相关性;当配入30%比例的型煤时,型煤中沥青的配比与焦炭质量也存在较高的相关性;直接配加1.8%沥青比将同比例沥青加入型煤可得到冷强度和粒度组成更优的焦炭,但焦炭的热强度稍差。

Relationship between asphalt percentage and coke quality

In order to improve the strength and the grain size of the coke， the effect of different asphalt addition methods， adding or directly adding in the briquette， and different bitumen adding proportions on the coke quality of the coal blending were studied by a 40 kg experimental coke oven. The results showed that with the proportion of bitumen into the briquette was 6%， the strength and the granularity of the coke were obviously improved with the proportion of the briquette increasing， which given a good correlation between the proportion of bitumen and its strength and granularity. When 30% proportion of briquette was added， there was a high correlation between the ratio of bitumen in the briquette and the quality of the coke. The coke with better cold strength and particle size composition can be obtained by adding 1.8% asphalt into the briquette， but its thermal strength was slightly worse.