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Method of reclaiming fluorite from scheelite tailings

A technology of fluorite and tailings, which is applied in the field of environmental protection treatment of tailings, can solve the problems of high cost of chemicals, great environmental impact, and difficult industrial application, and achieve the effects of reducing production costs, reducing environmental impacts, and reducing usage

Inactive Publication Date: 2017-09-08
湖南临武嘉宇矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Full tailings flotation treatment has problems such as high reagent cost and great environmental impact, and it is difficult to realize industrial application. Therefore, it is very necessary to find a new method to deal with scheelite tailings

Method used

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  • Method of reclaiming fluorite from scheelite tailings
  • Method of reclaiming fluorite from scheelite tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A scheelite flotation tailings containing CaF 2 18.16%, CaCO 3 2.07%, SiO 2 43.71%, after one rough and four fine shaker re-election, the recovery rate of fluorite reaches 71.26%, and then flotation is carried out on the re-eluted ore pulp.

[0020] The flotation process adopts a process of roughing once, four times of beneficiation and two times of sweeping. Among them, the middle ore of the first beneficiation and two times of sweeping are returned in sequence, and the middle ore of the second, third and fourth beneficiation are returned together. In a rough selection, first adjust the pH value of the pulp to 6-7, the amount of mixed inhibitor (the mass ratio of aluminum sulfate and water glass is 5:10) relative to the original ore is 2000g / t, and the addition of collector oleic acid relative to the original ore The amount is 100g / t. The amount of oleic acid added to the original ore in the two sweeps is 20g / t. In the first, second, third, and fourth beneficiat...

Embodiment 2

[0022] A scheelite flotation tailings containing CaF 2 20.45%, CaCO 3 10.79%, SiO 2 42.02%, after one coarse and four fine shaker re-elections, the recovery rate of fluorite reaches 80.25%, and then flotation is carried out on the re-eluted ore pulp.

[0023] The flotation process adopts a process of roughing once, four times of beneficiation and two times of sweeping. Among them, the middle ore of the first beneficiation and two times of sweeping are returned in sequence, and the middle ore of the second, third and fourth beneficiation are returned together. In a rough selection, first adjust the pH value of the pulp to 6-7, the amount of mixed inhibitor (the mass ratio of aluminum sulfate and water glass is 7:10) relative to the original ore is 5000g / t, and the addition of collector oleic acid relative to the original ore The amount is 80g / t. The amount of oleic acid added to the original ore in the two sweeps is 60g / t. In the first, second, third, and fourth benefici...

Embodiment 3

[0025] A scheelite flotation tailings containing CaF 2 20.45%, CaCO 3 10.79%, SiO 2 42.02%, after one coarse and four fine shaker re-elections, the recovery rate of fluorite reaches 80.25%, and then flotation is carried out on the re-eluted ore pulp.

[0026] The flotation process adopts a process of roughing once, four times of beneficiation and two times of sweeping. Among them, the middle ore of the first beneficiation and two times of sweeping are returned in sequence, and the middle ore of the second, third and fourth beneficiation are returned together. Firstly adjust the pH value of the pulp to between 6 and 7 in a rough selection, the addition amount of the mixed inhibitor (the mass ratio of aluminum sulfate and water glass is 6:10) relative to the original ore is 4000g / t, and the addition of the collector oleic acid relative to the original ore The amount is 50g / t. The amount of oleic acid added to the original ore in the two sweeps is 20g / t. In the first, seco...

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Abstract

The invention discloses a method for recovering fluorite from scheelite tailings. The method mainly adopts a gravity separation-flotation combined process. Firstly, the scheelite tailings are removed through a shaker gravity separation process of one coarse and four fines The scheelite and barite minerals in the process are enriched with fluorite minerals; and then the fluorite is recovered through a flotation process of one rough, four fine and two sweeps. Under the condition of fully recovering fluorite, the present invention greatly reduces the cost, improves the recovery rate of fluorite, reduces the amount of chemicals used in the flotation process, reduces the separation burden of the flotation process, and reduces the impact on the environment. pollution and promote the comprehensive utilization of resources.

Description

technical field [0001] The invention belongs to the technical field of environmental protection treatment of tailings, and in particular relates to a method for recovering fluorite from scheelite tailings. Background technique [0002] my country is rich in scheelite and fluorite co-associated ore resources, but the ore composition in this resource is complex. Scheelite and fluorite are often closely symbiotic with various sulfide ores, calcite and other minerals, and they are fine-grained. Due to the similar crystal structure and physical and chemical properties of the minerals, the flotation process is similar, and the process interferes with each other, making it difficult to separate by flotation. The traditional scheelite priority flotation process has a great impact on the subsequent fluorite flotation, resulting in a low recovery rate of fluorite flotation. At present, Dongshan Concentrator of Jiayu Mining Co., Ltd. mainly selects fluorite-scheelite mixed ore, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B7/00
CPCB03B9/00B03B7/00
Inventor 刘三军黄金罗庆林周水清罗四清曹水国闫程印
Owner 湖南临武嘉宇矿业有限责任公司
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