Injection type electrostatic sorting method and apparatus

An electrostatic separation and spray technology, applied in electrostatic effect separation, chemical instruments and methods, solid separation, etc., can solve problems such as inability to effectively separate micron-sized fine-grained minerals, huge investment in industrial wastewater, and industrial wastewater pollution. To achieve the effect of good sorting effect, wide material source and clear principle

Inactive Publication Date: 2009-06-24
杨卫华
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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 o...

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  • Injection type electrostatic sorting method and apparatus
  • Injection type electrostatic sorting method and apparatus

Examples

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Effect test

Embodiment 1

[0019] Embodiment 1: as figure 1 As shown, embodiment 1 uses a horizontal electric field to complete the sorting by falling by its own weight after spraying. The rutile concentrate produced by the rutile mine in Shangnan County, Shaanxi Province is sorted and purified by the present invention, and is sorted according to the mixed particle size of the original particle size components, and the grade T i o 2 86.31%, concentrate grade T i o 2 88.45%, good indicators of recovery rate 81.91%. In Example 1, although the concentrate grade is not greatly improved, the tailings have high impurities, less ore loss and high concentrate recovery. If you want to improve the concentrate grade, you can reuse embodiment 1 or refer to embodiment 2.

Embodiment 2

[0020] Embodiment 2: as figure 2 As shown, embodiment 2 uses vertical electric field after spraying to complete sorting by using spray inertia. The material enters from the feeding port 13, and after being negatively charged in the corona chamber, it is sprayed by the discharge nozzle 11 to the positive electrode 2 of the discharge plate for discharge, so as to achieve the effect that the conductor particles are completely discharged rather than the conductor particles are basically not discharged, and then sorted The nozzle 10 sprays horizontally into the sorting chamber 1, and the sorting is completed in the vertical electric field formed by the positive pole 3 of the sorting electrode and the negative pole 9 of the sorting pole. Although the recovery rate of concentrate ore in embodiment 2 has decreased, the grade of concentrate ore can be greatly improved, which is suitable for the production of high-grade concentrate ore. To improve the recovery rate of concentrate, the...

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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...

Claims

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Application Information

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IPC IPC(8): B03C7/00B03C7/02
Inventor 杨卫华
Owner 杨卫华
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