Fluidization classification equipment and method

Abstract

Disclosed is fluidization classification equipment and a method, the device mainly comprises a settlement classification room, a central feeding casing, a central pipe, an overflow trough, an overflow collecting trough, a cone shaped inclined pore plate, a fluidization classification room, a pulsating water current generator, a coarse fraction material fluidizing room, a sensor, a programmable logic controller, a coarse fraction material discharging automatic control actuator. Firstly, water is injected into the fluidization classification room by the pulsating water current generator in the pulsating mode to form pulsation rising flow, after the classified material enters into the settlement classification room, the settlement classification is generated under the auxiliary action of thecone shaped inclined hole plate. Fine fraction material is overflowed to the overflow collecting trough from the upper end of the classification room and is discharged, the coarse fraction material and part of the fine fraction material are settled to the fluidization classification room; wherein, the fine fraction material is driven by the pulsation rising flow to overflow from the central pipe,but the coarse fraction material continues to settle downwards in the fluidization classification room, then is discharged as the coarse fraction material. The method and the structure are simple, and the particle size processing range is wide.

Description

technical field [0001] The invention relates to a fluidized classification equipment and method, especially suitable for the particle size control of the grinding circuit and the classification of coal slime or other fine-grained minerals. Background technique [0002] In the field of fine-grained mineral classification, there are mainly equipment and methods such as cyclones, spiral classifiers, high-frequency screens, inclined plate classifiers, and concentration funnels. However, the classification particle size of the cyclone is not easy to adjust, and the classification accuracy is affected by the feeding pressure. The influence of flow rate and flow rate is large, the classification efficiency is low, and the wear is serious at the same time, it needs to be replaced frequently, the energy consumption is high, the feeding distribution balance of the cyclone group is difficult, and the classification effect is affected; the spiral classifier occupies a large area, and the...

AI Technical Summary

Problems solved by technology

[0002] In the field of fine-grained mineral classification, there are mainly equipment and methods such as cyclones, spiral classifiers, high-frequency screens, inclined plate classifiers, and concentration funnels. However, the classification particle size of the cyclone is not easy to adjust, and the classification accuracy is affected by the feeding pressure. The influence of flow rate and flow rate is large, the classification efficiency is low, and the wear is serious at the same time, it needs to be replaced frequently, the energy consumption is high, the feeding distribution balance of the cyclone group is difficult, and the classification effect is affected; the spiral classifier occupies a large area, and the energy consumption is high. The classification accuracy is poor, which is not suitable for fine-grained classification; the structure of the high-frequency sieve is complex, the processing capacity is small, and the screen needs to be replaced frequently; the classification accuracy of the inclined plate classifier and the concentration funnel is poor, it is inconvenient to adjust, and the underflow discharge port is often blocked.

The classification efficiency of materials in a wide particle size range, especially fine particle size, is not ideal

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