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A high-voltage electric pulse pretreatment method for strengthening cassiterite crushing and sorting

A high-voltage electric pulse and pretreatment technology, applied in the field of mineral processing, can solve the problem that useful minerals and gangue minerals cannot be effectively separated, and achieve the effects of reducing ineffective electric crushing process, reducing ore strength and saving space

Active Publication Date: 2021-03-16
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional ore crushing and grinding mainly rely on mechanical energy impact, shearing and grinding to break and erode the ore to achieve the purpose of dissociation of mineral monomers. The crushing mechanism determines that most ores are mainly transgranular crushing, making useful minerals and gangues Minerals cannot be effectively separated

Method used

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  • A high-voltage electric pulse pretreatment method for strengthening cassiterite crushing and sorting
  • A high-voltage electric pulse pretreatment method for strengthening cassiterite crushing and sorting
  • A high-voltage electric pulse pretreatment method for strengthening cassiterite crushing and sorting

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Effect test

Embodiment 1

[0074] The cassiterite ore used is the raw ore of a certain tin mining area in Yunnan Province, and the chemical multi-elements are shown in Table 1 by mass percentage;

[0075] Table 1

[0076] components sn Ni Cu mn TiO 2

Zn CaO content 0.35 0.003 0.75 0.20 0.50 0.049 12.5 components MgO Fe SiO2 Al2O3 P Na 2 o

As content 1.47 34.48 8.57 0.52 0.01 0.042 0.01 components Pb Bi F K 2 o

S content 0.01 0.08 0.2 0.12 18.87

[0077] Chemical phase analysis results are shown in Table 2 by mass percentage;

[0078] Table 2

[0079] Phase tin in cassiterite Tin and others in sulphides Total tin content / % 0.304 0.046 0.35 Proportion / % 86.75 13.25 100

[0080] It can be seen from the table that the grade of copper in the ore is 0.75%, the grade of iron is 34.48%, and the grade of tin is 0.35%. tin and other forms;

[0081] The method is:...

Embodiment 2

[0100] The cassiterite ore sample used is the original ore of a tin mining area in Yunnan Province, and the chemical multi-elements are shown in Table 4 by mass percentage;

[0101] Table 4

[0102] components sn Ni Cu mn TiO2 Zn CaO content 0.35 0.003 0.75 0.20 0.50 0.049 12.5 components MgO Fe SiO2 Al2O3 P Na2O As content 1.47 34.48 8.57 0.52 0.01 0.042 0.01 components Pb Bi F K2O S content 0.01 0.08 0.2 0.12 18.87

[0103] Chemical phase analysis results are shown in Table 5 by mass percentage;

[0104] table 5

[0105] Phase tin in cassiterite Tin and others in sulphides Total tin content / % 0.304 0.046 0.35 Proportion / % 86.75 13.25 100

[0106] It can be seen from the table that the grade of copper in the ore is 0.75%, the grade of iron is 34.48%, and the grade of tin is 0.35%. Tin and other forms;

[0107] Method is with embodiment 1...

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Abstract

The invention provides a high-voltage pulse pretreatment method for reinforcing cassiterite crushing and sorting, a high-voltage pulse device is adopted, and the high-voltage pulse pretreatment methodcomprises the following steps that (1), a water pump is started, water continuously enters a pulsating insulation cylinder body, and is discharged from a water outlet of a product collector; (2), cassiterite ore is conveyed into a pulse insulating cylinder body through a ore feeding bin and is accumulated on a screen, and the top of the cassiterite ore is in contact with a high-voltage electrode;(3), a power supply is turned on, and discharging is carried out between the high-voltage electrode and a high-voltage negative electrode to enable the cassiterite ore to be broken; (4), through therotation of an eccentric wheel, the lifting of the water flow acts on the ore on the screen, and a small particle part moves downwards; and (5), the crushed cassiterite ore enters the product collector. The method can be used for improving the useful mineral content of crushed products, the monomer dissociation degree of the crushed products is improved, the energy consumption in the subsequent processing process is reduced, and the enterprise cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a high-voltage electric pulse pretreatment method for strengthening cassiterite crushing and sorting. Background technique [0002] Tin is a metal element with a low melting point, non-toxic, acid and alkali corrosion resistance, good plasticity, fatigue resistance and other properties. In modern times, it is widely used in cutting-edge technology fields such as information, chemical industry, electrical appliances, metallurgy, building materials, machinery, electronics, food packaging, fuel, atomic energy and spacecraft, and is called "industrial monosodium glutamate"; The basic reserves are about 11 million tons, and the proven tin ore reserves have reached about 7 million tons, and a quarter of the world's tin ore resources are in China. However, the tin grades of my country's tin ore resources are all low. Generally between 0.10% and 1%, its resource res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C19/18B02C23/16
CPCB02C19/18B02C23/16B02C2019/183B02C2023/165
Inventor 袁帅高鹏韩力仁韩跃新李艳军
Owner NORTHEASTERN UNIV LIAONING
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