重介质选煤是现代选煤最流行的方法也是最好用的方法,重介质粉悬浮液固体容积浓度因为悬浮液固体容积浓度和悬浮液的黏度有很大的关系,悬浮液的黏度随着固体容积浓度的升高而增大,如果固体容积浓度超过40%,悬浮液的黏度太高,不利于分选;如果浓度太低,低于20%时,悬浮液的稳定性不好,因此悬浮液的固体浓度容积一般稳定于20%-40%之间比较好。原煤粒度如果入选原煤的粒度太小,可能会使得重介质选煤的偏差增大,因此重介质选块煤时,1mm级煤的含量对烟煤最好不超过1.5%-2.0%,对无烟煤则控制在0.4%-2.0%之间。
Dense medium coal preparation is the most popular in the modern coal preparation method which is the most useful method, dense medium powder slurry solids volume concentration for slurry solids volume concentration and viscosity of slurry has a lot to do, the slurry viscosity increases with the rising of the solid volume concentration, if more than 40% solids volume concentration, viscosity of slurry is too high, is not conducive to sorting; If the concentration is too low, less than 20%, the stability of the suspension is not good, so the suspension of solids volume concentration generally stable in between 20% and 40%. Raw coal particle size if selected raw coal particle size is too small, may make the deviation of heavy medium coal preparation, so choose a lump coal dense medium, coal level 1 mm content on the coal had better not exceed 1.5% 2.0%, control of anthracite is between 0.4% and 2.0%.
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