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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

A high-voltage electric pulse pretreatment method to strengthen the crushing and sorting of cassiterite, using a high-voltage electric pulse device, according to the following steps: (1) Start the water pump to allow water to continuously enter the pulsating insulating cylinder, from the product collector Discharge from the water outlet; (2) Transfer the cassiterite ore into the pulse insulating cylinder through the ore silo, and accumulate it on the screen, with the top in contact with the high-voltage electrode; (3) Turn on the power, and a discharge occurs between the high-voltage electrode and the high-voltage negative electrode to make the tin Stone ore is broken; (4) Through the rotation of the eccentric wheel, the rise and fall of the water flow affects the ore on the screen, and the small particles move downward; (5) The crushed cassiterite ore enters the product collector. The method of the invention can increase the useful mineral content of the crushed products and increase the monomer dissociation degree of the crushed products, which is beneficial to reducing energy consumption in subsequent processing procedures and saving enterprise costs.

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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