Ore high-voltage pulse discharge pretreatment system and using method thereof

A high-voltage pulse discharge and high-voltage electric pulse technology, which is applied in the field of mineral processing, can solve the problems of large dust, low degree of fragmentation and dissociation, and excessive pulverization, so as to improve the degree of dissociation, improve the grinding efficiency, and avoid the waste of energy. Effect

Active Publication Date: 2021-01-05
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of low degree of mechanical crushing and dissociation, large dust, and serious over-crushing phenomenon existing in

Method used

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  • Ore high-voltage pulse discharge pretreatment system and using method thereof
  • Ore high-voltage pulse discharge pretreatment system and using method thereof
  • Ore high-voltage pulse discharge pretreatment system and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0053]Example 1

[0054]The structure of the ore high-voltage pulse discharge pretreatment system is as followsfigure 1 As shown, it includes feed bin 1, screw feeder 2, high-voltage electric pulse crushing cavity 9, pulse high-voltage electric generator 3, output power source 5, insulating liquid storage pool 8 and oscilloscope 11; high-voltage electric pulse crushing cavity 9 structure asfigure 2 Shown

[0055]The discharge port of the feed silo 1 is matched with the feed end of the screw feeder 2, and the discharge end of the screw feeder 2 is matched with the feed port of the high-voltage electric pulse crushing chamber 9; high-voltage electric pulse crushing The top of the cavity 9 is provided with a feeding port 9-13, and the bottom is provided with a liquid inlet 9-14 and a discharge port 9-15;

[0056]The high voltage pulse crushing cavity 9 is provided with a positive electrode and a negative electrode. The positive electrode is connected in parallel with two gas switches 4 through ...

Example Embodiment

[0074]Example 2

[0075]The structure of the ore high-voltage pulse discharge pretreatment system is the same as that of Embodiment 1;

[0076]The structure of the high voltage pulse crushing cavity 9 is asimage 3 As shown, the insulating cylinder 9-5 and its internal material trough 9-9 are included; the top plate connected to the top of the insulating cylinder 9-5 is provided with a feed port 9-13, and the bottom plate of the insulating cylinder 9-5 is provided with a liquid inlet Port 9-14 and discharge port 9-15; the positive and negative electrodes are high-voltage positive 9-2 and high-voltage negative 9-3 respectively, and the front ends of the high-voltage positive 9-2 and high-voltage negative 9-3 are located inside the trough 9-9; The high-voltage positive pole 9-2 is connected in parallel with the two gas switches 4 through a wire, and the high-voltage negative pole 9-3 is connected to the output power supply 5 through a wire; the space between the high-voltage positive pole 9-...

Example Embodiment

[0084]Example 3

[0085]The structure of the ore high-voltage pulse discharge pretreatment system is the same as that of Embodiment 1;

[0086]The structure of the high voltage pulse crushing cavity 9 is asFigure 4 As shown, the insulating cylinder 9-5 and the inner screen 9-10 are included; the top plate connected to the top of the insulating cylinder 9-5 is provided with a feed port 9-13, and the bottom plate of the insulating cylinder 9-5 is provided with a liquid inlet Port 9-14 and discharge port 9-15; rod-shaped high-voltage anode 9-11 is used as the positive electrode, passing through the horizontally placed screen 9-10; the bottom end of the rod-shaped high-voltage anode 9-11 is connected in parallel with two gas switches 4 through wires , The top of the rod-shaped high-voltage positive electrode 9-11 is above the screen 9-10; the funnel-shaped high-voltage negative electrode 9-12 is used as the negative electrode, and its internal space is an inverted truncated cone shape, and it...

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Abstract

The invention discloses an ore high-voltage pulse discharge pretreatment system and a using method thereof. The ore high-voltage pulse discharge pretreatment system comprises a feeding bin, a spiral feeder, a high-voltage electric pulse crushing cavity, a pulse high-voltage electric generator, an output power supply, an insulating liquid storage pool and an oscilloscope. The using method comprisesthe steps that (1) ore is conveyed to the high-voltage electric pulse crushing cavity through the feeding bin and the spiral feeder, and insulating liquid is introduced into the high-voltage electricpulse crushing cavity; (2) the voltage of the output power supply is controlled, the ore is in contact with a positive electrode and a negative electrode, electric current is conveyed to the pulse high-voltage generator, converting into an ultrahigh-voltage direct electric current is carried out, high-voltage electric pulse pretreatment is performed on the ore, and real-time monitoring is performed through the oscilloscope; and (3) the ore is subjected to high-voltage electric pulse pretreatment and then is continuously discharged along with the insulating liquid. The using method is simple in process, stable in system operation and easy in product property control; and the high-voltage electric pulse pretreatment enables internal cracks and gaps of the ore to be sharply increased, the mechanical property of the ore is weakened, and the ore grinding efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to an ore high-voltage pulse discharge pretreatment system and an application method thereof. Background technique [0002] Grinding is the link with the largest energy consumption in the beneficiation process, and the energy consumption of ore grinding accounts for 40-50% of the total energy consumption of the beneficiation plant; the loss cost of the liner of the mill and the grinding medium accounts for 70-80% of the total loss cost of the beneficiation plant. %, so the focus of energy saving and consumption reduction in mineral processing plants should be on grinding operations. [0003] There are usually two means to improve the grinding efficiency, one is to rationally design and optimize the grinding process, select efficient large-scale grinding equipment, use advanced liners and media, improve the automation level of the grinding machine, etc.; In mi...

Claims

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Application Information

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IPC IPC(8): B02C19/18B02C23/18B02C25/00B02C21/00
CPCB02C19/18B02C23/18B02C25/00B02C21/00B02C2019/183
Inventor 高鹏袁帅秦永红韩跃新李艳军张宁豫
Owner NORTHEASTERN UNIV
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