Sorting technology for coarse coal slurry damping pulsation interference bed

Abstract

The invention discloses sorting technology for a coarse coal slurry damping pulsation interference bed. The sorting technology is formed by the mutual connection of an interference bed sorter, a feeding system, a peristaltic pump, a cleaned coal recovering system, and a water pump, and is characterized in that the inside of the interference bed sorter is added with a plurality of damping blocks and screens; the middle part of the interference bed sorter is connected with the feeding system to form a stable fluid bed; simultaneously, a diaphragm is additionally arranged on the lower part of the interference bed sorter and the upper part of a heavy product discharge port to generate a pulsating flow, so that particles with different densities gain the accelerating effect and retarding effect, and the leading action of the density on the separation effect is strengthened; the peristaltic pump is used for discharging heavy products, so that the processing capability of the equipment is improved; under the conditions of wide particle size range of the coarse coal slurry and heavy processing load, the good separation effect and high separation efficiency can also be achieved by the separation process.

Description

Technical field: [0001] The invention belongs to the technical field of coarse coal slime damping pulsation interference bed separation. Background technique: [0002] The disturbed bed separation technology is developed from the ancient hydraulic classifier. It uses the heavy products in the feed to achieve fluidization under the action of the rising water flow to increase the density of the suspension, so that the materials are separated according to the different sedimentation speeds. Separation is carried out. When the particle size range of the feed is narrow, the influence of density on the sedimentation velocity plays a leading role. At this time, it can be regarded as sorting by density. The outstanding disadvantage of the traditional disturbed bed separation technology used in the separation of coarse coal slime is that the particle size range of the feed material is required to be narrow. When the particle size range of the feed material is wide, the adverse effect...

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Problems solved by technology

The outstanding disadvantage of the traditional disturbed bed separation technology used in the separation of coarse coal slime is that the particle size range of the feed material is required to be narrow. When the particle size range of the feed material is wide, the adverse effect of particle size on the separation is very obvious. Density coarse ore particles can easily enter the high-density underflow. Although the recovery of low-density coarse ore particles can be enhanced by increasing the rising water velocity, the high rising water velocity will cause high-density fine particles to enter the overflow. In the launder, resulting in a decrease in sorting efficiency

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