A wide particle size coal slime flotation process
A coal slime flotation, wide-grain technology, applied in flotation, solid separation and other directions, can solve the problems of flotation particle size upper limit and flotation efficiency cannot be taken into account at the same time, narrow flotation particle size, and low particle size upper limit, etc. The effect of improving the yield of clean coal, increasing the upper limit of flotation particle size, and reducing production and management costs
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[0023] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.
[0024] The slime ash in a coking coal preparation plant is 26.11%, the maximum particle size is 6-7mm, and the particle size composition is shown in Table 1. Put the coal slime into the slurry mixing tank, and at the same time add collector (diesel) for slurry mixing, the amount of collector is 1.5kg / t dry coal slime, and the stirring time is 3 minutes; the mixed slurry is passed through the high-pressure jet The pump is fed into the self-priming micro-bubble generator with a pressure of 0.25Mpa, and the pulp discharged from the micro-bubble generator enters the defoaming mixing tank, and is stirred for 2 minutes to defoam; the defoamed pulp is fed into the interference bed-self-circulation flotation Column, add foaming agent (No. 2 oil) through the bubble generating device of the interfering bed-self-circulation flotation column, the amount of fo...
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