This paper details the working principle and technical parameters of the stack vibration screen.In view of the problems of poor ash removal effect and high ash content of coarse cleaned coal products,the transformation scheme of applying laminated vibration screen instead of arc screen is proposed.The feed concentration of the laminated screen was optimized and adjusted,and the process was further optimized by cutting part of the qualified cleaned coal in advance.The ash content of crude cleaned coal was reduced from more than 11%to less than 10%,which effectively reduces the influence of"owed ash"of heavy cleaned coal,increases the ash content of heavy cleaned coal from 8.75%to 9.15%,reduces the particle size content of>0.25 mm in flotation feed,effectively improves the sorting efficiency of flotation system,increases the ash content of coal from 68.06%to more than 73%,and the yield of both heavy cleaned coal and flotation cleaned coal effectively improved.
关键词
选煤厂/叠层振动筛/弧形筛/脱泥降灰
Key words
coal preparation plant/laminated vibrating screen/curved screen/desliming and reducing ash
维普
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