Reduction measures of medium consumption of Halagou coal preparation plant
FANG Zhimin;
Abstract：
In order to solve the problems of high loss of medium,low recovery of medium and large amount of slime in medium circulation system which existed in lump coal and slack coal system of Halagou coal preparation plant,based on the analysis of the production situation on site,the causes of excessive medium consumption were studied,and equipments like flip-flop screen and banana screen were used to remove power and slime before flotation,to improve system technical process. At the same time,measures such as improving the sculping effect of lump coal and slack coal system sculping screen selectively,improving the medium recovery rate of magnetic separator and perfecting the system medium recovery process were taken to reduce the medium consumption of the plant. After the transformation,coal medium consumption per ton of the bulk coal system was 0.815 kg,t coal medium consumption per ton of the slack coal system was 0.692 kg,and medium recovery rate of the magnetic separator reaches 99.8% above,which made about 0.37 RMB be saved per ton. When the coal quality changed,the medium consumption fluctuation was small,the whole system medium consumption value was stable and was under the value regulated by the state.
Key Words： coal preparation plant;medium consumption;medium draining screen;magnetic separator
Foundation:
Authors: FANG Zhimin;
DOI: 10.13226/j.issn.1006-6772.19061815
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