A kind of beneficiation method of low-grade refractory scheelite

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...

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