Study of the effect of desulphurization of the primary washing system and the scheme for its optimization at Yangquan No.1 Mine Coal Washery
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摘要: 为了解决阳泉一矿选煤厂商品煤硫分偏高，尤其是末原煤长期得不到有效洗选的问题，对现有工艺提出优化方案——将跳汰系统改为无压三产品重介质旋流器系统，实现末原煤全部入选，并在末原煤入选前增加破碎环节，将入料上限控制在6 mm左右。预计优化方案实施后，末精煤硫分可以控制在1.65%以下，每年可产出末精煤1.50～2.00 Mt，由此产生的利润在1亿元左右。Abstract: The saleable coal product of the washery is considerably high in sulfur content, and, particularly, the problem relating to ineffective treatment of raw small coal has long remained unsolved. To revere this situation, the scheme for optimizing the existing washing washing process is proposed as follows: changing the jigging system to a gravity-fed 3-product heavy-medium cyclone system for enabling all raw coal to be washed; and adding raw small coal crushing link ahead of its washing process for controlling the upper size limit of the feed coal at around 6 mm. Though implementation of the scheme, it is expected to produce per year 1.50-2.00 Mt of clean small coal product with a sulfur content of less than 1.65%. The economic revenues thus yielded is anticipated to reach 100 million yuan.
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Keywords:
- sulfur /
- saleable coal /
- raw small coal /
- washing system /
- desulfurization efficiency /
- anticipated result
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