Method for recovering fine-grained wolframite by applying superconducting magnetic separation

A wolframite, fine-grained technology, applied in chemical instruments and methods, magnetic separation, high-gradient magnetic separation, etc., can solve the problems of reducing the utilization rate of tungsten resources, loss of tungsten resources, environmental pollution, etc., to improve the magnetic separation Processing capacity, reduced energy consumption, and the effect of reducing production costs

Inactive Publication Date: 2020-06-30
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a method for recovering fine-grained wolframite by superconducting magnetic separation, which aims at solving the problem of fine-grained wolframite. Shaking table gravity separation has a low recovery rate of fine-grained wolframite, which is likely to cause a large amount of tungsten resource loss, resulting in huge economic losses and waste of resources, reducing the utilization rate of tungsten resources, and flotation requires the use of a large amount of chemic

Method used

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Embodiment 1

[0025] This specific embodiment adopts the method of gravity separation-superconducting magnetic separation to separate ore raw materials containing fine-grained wolframite. The raw material used in this embodiment is black tungsten fine mud, and its WO 3 The content is 0.54%, and its main gangue minerals are quartz (content is 74.85%), a small amount of calcium carbonate, magnesium oxide, aluminum oxide, etc.; the specific process is: first, the raw materials are subjected to centrifugal gravity separation using a vertical centrifuge , remove the minerals with small specific gravity in the raw material, and pre-enrich the fine-grained wolframite. The centrifugal gravity separation process adopts a rough, a fine, and a second sweep, and the middle ore returns in sequence to obtain the gravity-selected tungsten fine slime concentrate. The WO of the re-selected tungsten slime concentrate 3 The content is 15.87%, and the recovery rate is 95%; then use a superconducting magnetic s...

Embodiment 2

[0027] This specific embodiment adopts the method of gravity separation-superconducting magnetic separation to separate ore raw materials containing fine-grained wolframite. The raw material used in this embodiment is black tungsten fine mud, and its WO 3 The content is 1.86%, and its main gangue minerals are quartz (content is 69.57%), a small amount of calcium carbonate, magnesium oxide, aluminum oxide, etc.; the specific process is: firstly, the raw materials are subjected to centrifugal gravity separation using a horizontal centrifuge , remove the minerals with small specific gravity in the raw material, and pre-enrich the fine-grained wolframite. The centrifugal gravity separation process adopts a rough, a fine, and a second sweep, and the middle ore returns in sequence to obtain the gravity-selected tungsten fine slime concentrate. The WO of the re-selected tungsten slime concentrate 3 The content is 17.43%, and the recovery rate is 96%; then use a superconducting magnet...

Embodiment 3

[0029] This specific embodiment adopts the method of gravity separation-superconducting magnetic separation to separate ore raw materials containing fine-grained wolframite. The raw material used in this embodiment is black tungsten fine mud, and its WO 3The content is 1.14%, and its main gangue minerals are quartz (content is 72.25%), a small amount of calcium carbonate, magnesium oxide, aluminum oxide, etc.; the specific process is: firstly, the raw materials are subjected to centrifugal gravity separation using a horizontal centrifuge , remove the minerals with small specific gravity in the raw material, and pre-enrich the fine-grained wolframite. The centrifugal gravity separation process adopts a rough, a fine, and a second sweep, and the middle ore returns in sequence to obtain the gravity-selected tungsten fine slime concentrate. The WO of the re-selected tungsten slime concentrate 3 The content is 16.53%, and the recovery rate is 96%; then use a superconducting magneti...

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Abstract

The invention discloses a method for recovering fine-grained wolframite by applying superconducting magnetic separation. The method aims to solve the technical problems that in the prior art, the recovery rate of the fine-grained wolframite is low through traditional shaking table reselection, so that great economic loss and resource waste are formed, a large amount of reagents are needed in flotation, and environmental pollution is prone to being caused. The method comprises the following steps that ores containing the fine-grained wolframite are used as raw materials, firstly, the raw materials are subjected to centrifugal reselection, minerals with small specific gravity in the raw materials are removed, the fine-grained wolframite is pre-enriched, and reselected concentrates are obtained; and then superconducting magnetic separation is carried out on the reselected concentrates by using a superconducting magnetic separator, so that fine-grained wolframite concentrates are obtained.According to the method, the process of gravity separation-superconducting magnetic separation is used in a breakthrough mode, so that the sorting precision and efficiency are greatly improved, meanwhile, any reagent does not need to be added, the process is energy-saving and environment-friendly, the resource recycling rate is high, and the high-efficiency recycling of the wolframite resources is realized.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, in particular to a method for recovering fine-grain wolframite by using superconducting magnetic separation, specifically a process of centrifugal gravity pre-selection and superconducting magnetic separator selection. Background technique [0002] Wolframite is the main ore for extracting tungsten. It is also called wolframite. Because it contains different proportions of iron tungstate and manganese tungstate, if the iron content is higher, it is called wolframite. , containing more manganese is called tungsten ore. Wolframite is brown to black with a metallic or semi-metallic luster. [0003] Wolframite is currently the most important tungsten ore mineral, and its use is mainly for the production of various deep-processed products of tungsten; Wolframite is widely used, but with the mining of this mineral resource for many years, wolframite resources are also very close to exhausti...

Claims

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Application Information

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IPC IPC(8): B04B5/10B03C1/00
CPCB03C1/002B03C2201/20B04B5/10
Inventor 黄万抚王兆连曾祥荣黄李金鸿李新冬黄彪林姚小辉胡运祯张天锡刘凤亮王东方
Owner JIANGXI UNIV OF SCI & TECH
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