Injection type electrostatic sorting method and apparatus

Abstract

The invention relates to a method and a device for injection electrostatic separation, which are used for separating superfine materials which consist of conductor particles and nonconductor particles. The device mainly comprises a high-pressure electrostatic generator, a high-pressure draught fan, a suspension mixing cavity, a corona cavity, a gas-liquid nozzle, a discharge polar plate, a separation cavity, a separation electrode, a material receiver, a frame, an insulating plate, a metal protective net and the like. The principle of the method and the device is to suspend powder into gas phase flow and solid phase flow, to make solid particles have saturated charge through a corona electric field, to inject the solid particles to the discharge polar plate through the gas-solid nozzle, to achieve the effect that the conductor particles completely discharge but the nonconductor particles almost do not discharge, and to finally complete separation according to the difference of the charge of the particles. The device has definite principle, a simple structure, convenient use and good separation effect, completely solves the worldwide problem of separation of the superfine particles (such as rutile), has the advantages of small fixed investment, low operation cost, small resource consumption and no generation of environmental pollution, and can be widely used in the fields of ore dressing, milling, coal preparation, resource recovery and utilization and the like.

Description

technical field [0001] The invention relates to a jet-type high-voltage electrostatic separation method and device belonging to the technical field of dry separation of fine-grained materials, and can be widely used in the fields of ore dressing, pulverization, coal preparation, nano-material engineering, resource recovery and utilization, and the like. Background technique [0002] It is an urgent task for scientists and engineers from all over the world to research and develop dry separation technology and fine-grained ore separation technology. At present, the world's separation of metal and non-metallic minerals mainly uses water separation, gravity separation, flotation, mercury mixing, cyanidation or a combination of these methods. These methods are all wet sorting methods, which have disadvantages such as large investment, high operating cost, large water consumption, and serious environmental pollution. my country is a country with increasingly scarce water resources...

AI Technical Summary

Problems solved by technology

These methods are all wet sorting methods, which have disadvantages such as large investment, high operating cost, large water consumption, and serious environmental pollution. However, my country is a country with increasingly scarce water resources and is also a developing country, where industrial wastewater pollution is very serious. Seriously, the investment in the treatment of these industrial wastewaters is huge, and it is very difficult to improve this situation in a short period of time

In addition, there is currently no method for effectively sorting micron-sized fine-grained minerals in the world. With the continuous development of other fields, the research and development of fine particle material separation technology is becoming more and more urgent.

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