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Beneficiation method for low-grade difficult-to-treat scheelite

A beneficiation method and refractory technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of refractory scheelite, low-cost flotation separation, high efficiency of fluorite, etc. Significant economic benefits and good environmental adaptability

Active Publication Date: 2016-11-09
湖南玛瑙山矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for beneficiation of low-grade refractory scheelite, to solve the technical problem of beneficiation that scheelite cannot be separated from calcite and fluorite by efficient and low-cost flotation

Method used

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  • Beneficiation method for low-grade difficult-to-treat scheelite
  • Beneficiation method for low-grade difficult-to-treat scheelite

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Embodiment 1

[0015] The scheelite ore is ground to -0.074mm particle size ore, accounting for 50% of the total ore mass, graded at 0.037mm, +0.037mm particle size for shaking table gravity separation, to obtain tungsten gravity separation concentrate, shaking table separation Bie tailings are ground to -0.074mm particle size ore accounting for 75% of the total ore mass percentage, mixed with -0.037mm particle size, and then adding collector butyl xanthate 60g / t, foaming agent No. 2 oil 20g / t Flotation to remove sulfide ore, add 1500g / t sodium carbonate, 3000g / t inhibitor YFW-12, and 120g / t collector BF-01 to the slurry after removing sulfide ore for roughing to obtain roughing concentrate And rougher tailings, adding 1500g / t inhibitor YFW-12 and 80g / t collector BF-01 to the rougher tailings for the first sweeping, the first sweeping returns to the rougher, the first time Add 80g / t collector BF-01 to the scavenging tailings for the second scavenging to obtain the final tailings, and return ...

Embodiment 2

[0020] Grinding scheelite ore to -0.074mm particle size grade is 50% of the ore mass percentage, grading at 0.037mm, +0.037mm particle size for shaking table gravity separation to obtain tungsten gravity separation concentrate, shaking table separation tailings Grind to -0.074mm particle size ore mass percentage of 75%, mix with -0.037mm particle size, add collector butyl xanthate 60g / t, foaming agent No. 2 oil 20g / t flotation to remove sulfide ore , adding 1200g / t sodium carbonate, 2500g / t inhibitor YFW-12, and 150g / t collector BF-01 to the slurry after removing sulfide ore for roughing to obtain roughing concentrate and roughing tailings, Add 1200g / t inhibitor YFW-12 and 80g / t collector BF-01 to the roughing tailings for the first scavenging, and return to roughing for the first scavenging, and add 80g / t to the scavenging tailings to capture Collector BF-01 is used for the second sweeping to obtain the final tailings, and the second sweeping returns to the first sweeping. I...

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Abstract

The invention relates to a beneficiation method for low-grade difficult-to-treat scheelite, and the beneficiation method can be applied to obtain tungsten concentrates from the low-grade difficult-to-treat scheelite containing calcite and fluorite. The beneficiation method comprises the steps of ore preparation and ore grinding, gravity separation by a table concentrator and re-grinding, desulphurization by flotation, roughing, scavenging and concentrating. According to the beneficiation method, a novel inhibitor YFW-12 is developed, and the inhibitor can reduce the adsorption quantity, on the surface of the calcite and the surface of fluorite, of a collecting agent without affecting adsorption, on the surface of the scheelite, of the collecting agent, has a capability of selective inhibition of the calcite and the fluorite, and is non-toxic and is low in cost. A novel collecting agent BF-01 is developed, and the collecting agent is high in collecting capability and is good in environmental adaptation. The novel inhibitor YFW-12 and the novel collecting agent BF-01 are utilized to realize efficient utilization of the scheelite containing the calcite and the fluorite, so that economic benefits are remarkable.

Description

technical field [0001] The invention relates to a beneficiation method of low-grade refractory scheelite ore. The method can be used to obtain tungsten concentrate from the low-grade refractory scheelite ore containing calcite and fluorite. Background technique [0002] Tungsten resources are the dominant mineral resources in my country, and their reserves account for 68% of the world's total tungsten resources. However, with the rapid development of the national economy, the consumption of tungsten resources in my country is serious. In the process of rapid industrialization for many years, the over-exploitation of this resource has almost exhausted the easy-to-handle tungsten ore (easy to be re-selected and enriched wolframite) in China. In stark contrast to the over-exploitation of easy-to-treat resources, the degree of development and utilization of the abundant and refractory tungsten resources (low-grade scheelite) in my country is very low. The reserves of low-grade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B5/04B03D1/00B03D1/018B03D101/06B03D103/04
CPCB03B5/04B03B7/00B03D1/00B03D1/018B03D2201/06B03D2203/04
Inventor 冯博罗仙平朱贤文彭金秀郭蔚陈志勇曹志明
Owner 湖南玛瑙山矿业有限公司
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