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| Test and application of grinding quality and reducing consumption of Mo-lybdenite |
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Received:September 06, 2017
Revised:September 08, 2017
Accepted:September 15, 2017
Published Online:July 31, 2018
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| DOI： |
| KeyWord:grinding; Molybdenum ore; particle size composition; mill throughput; unit consumption |
| Author | Institution |
| XIAO Qingfei |
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming |
| WANG Guoqiang |
Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming |
| SONG Nianping |
Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming;The Concentrator of China MolybdenumCo,Ltd,Luoyang,Henan,;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming |
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| Abstract: |
| A systematic research on the mechanical properties and product size characteristics of Luoyang Molybdenum ore No1 Plant was conducted and different medium size distributions were adopted to select the best experiment design to achieve the goal of improving grinding effect in industrial test. Experimental tests results show that the hardness of molybdenum ore is unevenly distributed, a middle to high-hardness and tough ore sample has a hardness rating 8.36, poisson ratio rating 0.346; grinding cycle product size characteristic is not good and has low level of coarse grinding efficiency; the result of exploration experiments reveal that γ 0.2mm of recommended project reduced 7.03 percentage points than plant’s previous scheme, the fraction of -0.074mm, 0.20~0.010mm, 0.10~0.038mm increased by 7.55, 7.46 and 7 percentage points. The industrial test results show that the γ 0.10mm of 5# cyclone overflow decreased by 6.25 percentage points, the grinding fineness and the middle level 0.10～0.038mm that easy to select were increased by 12.17 and 6.01 percentage points; the γ 0.10mm of 6# cyclone overflow decreased by 0.66 percentage points, fineness and γ0.10～0.038mm were increased by 8.55 and 3.38 percentage points. In terms of mill throughput and unit consumption, 5# mill production capacity increased by 12.79%, unit consumption decreased 0.0641kg/t, the throughput of 6# ball mill increased by 12.43% and the unit consumption reduced 0.0237kg/t. |
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