Clean coal tailings utilization system
A technology for clean coal and tailings, which is applied in the field of clean coal tailings clean utilization system, can solve the problems of reducing the amount of clean coal, affecting the production efficiency of coal mines, and high water content, so as to reduce the amount of water and increase the single-time coal production. , the effect of increasing work efficiency
Active Publication Date: 2020-09-08
乌拉特中旗浩通清洁能源有限公司
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[0004] However, after the flotation of the flotation machine, the water content in the flotation tailings is very large, and the flotation tailings enter the sedimentation process in the sedimentation tank. Due to the large water content, it will undergo long-term sedimentation. The high water content also reduces the amount of clean coal obtained from a single sedimentation in the sedimentation tank, which affects the production efficiency of coal mine work
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0027] refer to figure 1 , a system for cleaning and utilizing clean coal tailings, including a flotation machine 1, a sedimentation tank 2, a preliminary filter 3, a filter press 4 and a dehydration device 5. The discharge port of the flotation machine 1 is connected to the feed port of the preliminary filter 3, and the preliminary filter 3 performs preliminary dehydration on the incoming flotation tailings to form wet clean coal and filtered water, and the wet coal passed through the preliminary filter 3 respectively The material outlet and water outlet are connected to the sedimentation tank 2 and the dehydration equipment 5, the overflow liquid flowing from the upper layer of the sedimentation tank 2 flows to the dehydration equipment 5 through an additional pipeline, and the water-containing coal slurry flowing from the bottom layer of the sedimentation ...
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A clean utilization system for clean coal tailings comprises a flotation machine, a precipitation tank, a preliminary filter, a filter press and a dewatering device, the material outlet of the flotation machine is connected with the preliminary filter, and the preliminary filter preliminarily dewaters floatation tailings to form wet clean coal and filtered water, and are connected to the precipitation tank and the dewatering device through the wet coal outlet and the water outlet of the preliminary filter respectively. The flotation tailings formed after the flotation of the water-containing clean coal by the floatation machine are preliminarily dewatered by a spiral dewatering machine to make most of the water in the flotation tailings connected to the dewatering device through the waterdischarging hole of the preliminary filter, and the remaining wet clean coal enters the precipitation tank and precipitates, so the single precipitation time of the precipitation tank is shortened, and the amount of clean coal obtained by single precipitation of the precipitation tank is increased, thereby high-efficiency flotation and dewatering of the clean coal are achieved to a certain extent,and the production efficiency of coal mine working is increased.
Description
technical field [0001] The invention relates to the technical field of coal slime flotation and flotation clean coal dehydration, in particular to a system for cleaning and utilizing clean coal tailings. Background technique [0002] Coal washing is an indispensable process of coal deep processing. The coal directly mined from the mine is called raw coal. Raw coal is mixed with many impurities during the mining process, and the quality of coal is also different. Coal with small internal ash and large internal ash is mixed in Together. Coal washing is an industrial process that removes impurities in raw coal, or classifies high-quality coal and low-quality coal. [0003] Flotation is the main method for sorting and upgrading clean coal. At present, one-stage coal slime flotation and flotation clean coal dehydration are the most widely used technology by using flotation machines, sedimentation tanks, vacuum filters or filter presses. . The water-containing clean coal flowin...
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IPC IPC(8): B03D1/00B01D36/04B03D103/08
Inventor 王威任福仪
Owner 乌拉特中旗浩通清洁能源有限公司