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lean coal;meagre coal
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nature : bituminous coal in a category. Less volatile compounds. CAKING weak.单煤炼焦，生成的焦炭，熔融性差，?磨小，易于破碎，但块度大?Commonly used in the coking coal as thin agent (leaning agent), to increase the fragmentation of coke. Coke reduced the crack. Also for the gasification of raw materials, or used as fuel. My origin of the famous northeast Benxi, Taiyuan, Shanxi, Hebei and other Fengfeng.


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1) lean coal
2) lean coal
3) coal
4) coal
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