Low-grade tungsten-molybdenum polymetallic ore beneficiation method

Abstract

The invention discloses a low-grade tungsten-molybdenum polymetallic ore beneficiation method. The low-grade tungsten-molybdenum polymetallic ore beneficiation method comprises the following steps that (1) raw ore is multi-metal associated ore of iron, molybdenum, bismuth, sulfur and tungsten, after the raw ore is crushed, ground and graded, iron ore concentrate is obtained by adopting a magnetic separation process of one-time roughing and two-time concentration, and iron tailings enter a thickener to be concentrated; (2) the concentrated iron tailings are subjected to molybdenum-bismuth mixed flotation through the technological process of one-roughing, three-sweeping and three-concentrating, molybdenum-bismuth mixed rough concentrate and molybdenum-bismuth tailings are obtained, wherein molybdenum-bismuth separation is conducted on the molybdenum-bismuth mixed rough concentrate, and the molybdenum-bismuth tailings enter a tungsten flotation stage; (3) the molybdenum-bismuth mixed rough concentrate is subjected to molybdenum-bismuth separation through the technological process of one-time roughing, two-time sweeping and four-time concentration, and molybdenum concentrate and bismuth middlings are obtained; and (4) the molybdenum-bismuth tailings are subjected to tungsten normal-temperature flotation through the technological process of one-roughing, three-sweeping and five-refining, and tungsten concentrate is obtained. According to the method, a low-grade tungsten-molybdenum polymetallic ore can be efficiently recycled.

Description

Technical field [0001] The present invention relates to a method of mineralization, and more particularly to a low-grade tungsten molybdenum multi-metal ore altered method. Background technique [0002] Tungsten, molybdenum is a typical rare metal, with very important economic value and strategic significance, is an indispensable metal metal in national economic production, which has a very important use in modern high-tech and new materials, high-performance electronic optical materials. Alloys with specific properties, the production of new materials and characteristic chemicals are inseparable from tungsten molybdenum and other metals. [0003] my country's tungsten molybdenum deposit is widely distributed, mainly distributed in southern China, Jiangxi, Hunan, etc. However, most of which are tungsten molybdenum cohesive total polymetallic mine, containing white tungsite, black tungsite, plowing molybdenum, tin stone, glow ore and fluorite, etc., and low taste. With the continu...

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Problems solved by technology

However, most of them are tungsten, molybdenum and bismuth co-associated polymetallic ores, containing useful minerals such as scheelite, wolframite, molybdenite, cassiterite, bismuthite and fluorite, and the grade is low

With the continuous mining and utilization of mineral resources, the characteristics of "poor, fine and miscellaneous" tungsten and molybdenum mineral resources in my country are becoming more and more obvious, and conventional methods cannot realize the efficient utilization of tungsten and molybdenum mineral resources