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A method for recovering multiple low-grade valuable elements in tungsten tailings

A valuable element and low-grade technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of valuable element loss, resource waste, single valuable metal element in tailings recovery, etc., to improve Effect of recovery rate and quality improvement

Active Publication Date: 2017-11-07
江西耀升钨业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages that the traditional tailings recovery only adopts a single beneficiation method, the recovery of valuable metal elements in the tailings is single, and other valuable elements are lost, resulting in waste of resources. The technical problem to be solved by the invention is to provide a method that uses gravity The combination of beneficiation and flotation, the whole recovery process is divided into four stages, reasonable control of the pH value of the pulp, through the control of the proportion of flotation agents in each stage, the recovery of multiple types of low-grade valuable elements in tungsten tailings , mainly the method of recycling the three metal elements of tailings tungsten, tin and molybdenum

Method used

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  • A method for recovering multiple low-grade valuable elements in tungsten tailings

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Experimental program
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Effect test

Embodiment 1

[0022] The raw materials are selected from a tailings pool of a tungsten mine in southern Jiangxi. The grade of tungsten trioxide is 0.08%, the grade of tin is 0.2%, the grade of molybdenum is 12%, the content of carbonate minerals is 9.41%, and the rest is a large amount of silicate minerals and A small part of barite, apatite, etc.

[0023] The flotation steps and reagent system are as follows: (1) Transport the tungsten tailings to the buffer tank for a slurry adjustment; connect a pipeline at the bottom of the buffer tank and enter the shaking table for sweeping; the concentrate swept by the shaking table is the final tungsten concentrate ore, and the medium ore selected by shaking table for thickening.

[0024] ⑵The above-mentioned dense tailings are pre-classified, and the classified coarse-grained products are returned to the grinding operation. The classified qualified products are subjected to secondary slurry adjustment, and then enter the second stage of beneficiati...

Embodiment 2

[0029] The raw materials are selected from a tailings pool of a tungsten mine in southern Jiangxi. The grade of tungsten trioxide is 0.1%, the grade of tin is 0.8%, the grade of molybdenum is 20%, the content of carbonate minerals is 6.41%, and the rest is a large amount of silicate minerals and A small part of barite, apatite, etc.

[0030] The flotation steps and reagent system are as follows: (1) Transport the tungsten tailings to the buffer tank for a slurry adjustment; connect a pipeline at the bottom of the buffer tank and enter the shaking table for sweeping; the concentrate swept by the shaking table is the final tungsten concentrate ore, and the medium ore selected by shaking table for thickening.

[0031] ⑵The above-mentioned dense tailings are pre-classified, and the classified coarse-grained products are returned to the grinding operation. The classified qualified products are subjected to secondary slurry adjustment, and then enter the second stage of beneficiatio...

Embodiment 3

[0036]The raw materials are selected from a tailings pool of a tungsten mine in southern Jiangxi. The grade of tungsten trioxide is 0.075%, the grade of tin is 0.5%, the grade of molybdenum is 15%, the content of carbonate minerals is 5.82%, and the rest is a large amount of silicate minerals and A small part of barite, apatite, etc.

[0037] The flotation steps and reagent system are as follows: (1) Transport the tungsten tailings to the buffer tank for a slurry adjustment; connect a pipeline at the bottom of the buffer tank and enter the shaking table for sweeping; the concentrate swept by the shaking table is the final tungsten concentrate ore, and the medium ore selected by shaking table for thickening.

[0038] ⑵The above-mentioned dense tailings are pre-classified, and the classified coarse-grained products are returned to the grinding operation. The classified qualified products are subjected to secondary slurry adjustment, and then enter the second stage of flotation, ...

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Abstract

The invention discloses a method for recycling multiple varieties of low-grade valuable elements in tungsten tailings. The method is mainly used for recycling low-grade metals of tungsten, molybdenum and tin in the tailings. According to the invention, a method of combining gravity concentration and flotation is used, and the whole recycling process is divided into four stages, wherein in the first stage, a gravity concentration method is used to select tungsten concentrates; in the second stage and the third stage, flotation reagents of sodium carbonate, sodium hexametaphosphate, pine wine oil, oleic acid, slaked lime, xanthate and the like are used to carry out flotation scavenging and repeated flotation selection to obtain molybdenum concentrates; in the fourth stage, toluene arsonic acid is added and multi-level selection is performed to obtain tin concentrate products. According to the invention, the pH value of pulp is reasonably controlled, the ratio of flotation agents in each stage is controlled, and valuable metal elements in the tailings are recycled step by step to improve the quality and recovery ratio of the concentrates.

Description

technical field [0001] The invention relates to a comprehensive utilization of resources, in particular to a method for recovering multiple varieties of low-grade valuable elements in tungsten tailings. Background technique [0002] Mineral resources are a kind of non-renewable resources. With the increasing demand for mineral resources in social development and people's continuous development of mineral resources, mineral resources are increasingly depleted. At the same time, the harm to the environment caused by the simple accumulation and backfilling of tailings has made people realize the significance of the recycling and reuse of tailings resources to the sustainable development of society and economy. A large number of facts show that mine tailings, as a secondary resource, must be comprehensively utilized no matter from the needs of social development or from the perspective of environmental protection. [0003] At present, most tungsten mines adopt the gravity separ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 崔宇明廖为兵郭发河朱伦玖郭名利
Owner 江西耀升钨业股份有限公司