Abstract
This paper reports the determination of fragmentation of coal particles in a fluidized bed, and the quantitative index put forward to describe the fragmentation of coal particles in the fluidized bed. The influences of a variety of factors such as bed temperature, the time the coal stays in the fluidized bed, size of coal, coal rank and fluidizing medium on the index of the fragmentation of coal were studied at Zhejiang University. From the research results, one can draw a conclusion: the fragmentation of coal particles has different characteristics for varieties of coal ranks, and the main reasons for the fragmentation of coal particles are the first class fragmentation and the heat stress.
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