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Mining pretreatment equipment

A pretreatment and equipment technology, applied in the fields of gold concentrate pretreatment equipment and mine pretreatment equipment, can solve the problems of low microwave efficiency and inability to meet gold ore pretreatment, etc., and achieves increased travel time and complete microwave heating reaction. , the effect of improving the efficiency of microwave heating

Inactive Publication Date: 2016-04-06
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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  • Description
  • Claims
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Problems solved by technology

[0007] However, the microwave processing equipment in the prior art has the disadvantages of low microwave efficiency and cannot meet the pretreatment of a large number of gold mines.

Method used

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Embodiment Construction

[0039] In the mineral processing process, the energy consumption of ore crushing and grinding accounts for about 50% to 70% of the total process energy consumption, and the energy efficiency is low (usually about 1%). Microwave, as an emerging heating energy source, has made remarkable achievements in improving the energy efficiency of crushing and grinding, reducing energy consumption, and increasing the degree of mineral dissociation. Microwaves can facilitate the crushing of ores and the release of precious metals.

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Abstract

The invention discloses mining pretreatment equipment which comprises a spiral screening and exhausting device and a microwave device. The spiral screening and exhausting device is arranged in the microwave device. The microwave device provides a microwave source and a sealing environment for mineral aggregate on the spiral screening and exhausting device. The mineral aggregate enters the spiral screening and exhausting device from the top of the microwave device and vertically and spirally walks on the spiral screening and exhausting device. The mineral aggregate walks in a layering placed manner according to the particle diameter under the effect of vibration in the process that the mineral aggregate walks on the spiral screening and exhausting device, the mineral aggregate treated through microwaves is collected in a layered manner according to the particle diameter, and meanwhile waste gas generated after the mineral aggregate is treated through the microwaves is exhausted out from the top of the microwave device along the spiral screening and exhausting device. It is proved by the experiment in which cyanidation leaching and column leaching are conducted on gold concentrates which are treated through the mining pretreatment equipment that the cyanidation leaching rate and the column leaching rate of the gold concentrates treated through the microwaves are increased remarkably.

Description

technical field [0001] The invention belongs to the technical field of mining equipment, and relates to a mine pretreatment equipment, in particular to a gold concentrate pretreatment equipment. Background technique [0002] Easy-to-leach ores refer to leaching by conventional cyanide method for 20-30 hours, and the leaching rate of gold reaches more than 90%, and the rest are refractory and extremely refractory ores. Minerals that affect leaching in refractory gold ores are divided into locked gold Minerals and reactive gangue minerals. [0003] l. Gold-locking minerals refer to gold existing in solid solution or completely wrapped by sulfide minerals, such as pyrite and arsenopyrite; [0004] 2. Reactive gangue minerals are further divided into two categories: (1) the ore contains carbon that robs gold; (2) gold is symbiotic with minerals that consume a large amount of leaching agents. [0005] Reasonable, efficient and environmentally friendly development and utilizatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B11/00
Inventor 王森王瑞廷刘非丁坤卫亚儒王宇斌何廷树马骁杨洋陶丽莎
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY