Concentration method of low-content molybdenum and bismuth in polymetallic ore

Abstract

The invention discloses a concentration method of low-content molybdenum and bismuth in polymetallic ore. The method comprises the steps of grinding feed, adding a regulator, a collector and a foaming agent for mixed flotation of molybdenum, bismuth and sulfur, and carrying out once rough concentration, 1-8 times of concentration and 1-4 times of scavenging to obtain the molybdenum, bismuth and sulfur mixed concentrate; adding the regulator and the collector to the mixed concentrate for separated floatation of molybdenum and bismuth-sulfur, and carrying out once separated rough concentration, 1-8 times of concentration and 1-4 times of scavenging to obtain the molybdenum and bismuth concentrate and the sulfur concentrate; and adding the regulator and the collector to the molybdenum and bismuth concentrate for separated floatation of molybdenum-bismuth, separating molybdenum and bismuth, and carrying out once rough concentration, 1-8 times of concentration and 1-4 times of scavenging to obtain the molybdenum concentrate and the bismuth concentrate. By adopting the process technology, the valuable minerals molybdenum and bismuth in the polymetallic ore can be effectively and comprehensively recovered, poisonous sodium cyanide is not needed, the environmental pollution is reduced, the traditional production process is simplified and the comprehensive utilization rate of the resources is improved.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a beneficiation method for low-content molybdenum and bismuth in nonferrous metal ore polymetallic ore. Background technique [0002] In a complex iron-molybdenum-bismuth-tungsten polymetallic ore, the content of molybdenum and bismuth is very low, especially the minimum content of bismuth reaches 0.03%. The recyclable minerals in the ore are magnetite, molybdenite, scheelite, fluorite, and other copper, lead, zinc, and bismuth content are very low; the gangue minerals are mainly garnet, quartz, calcite, rhombohedron Iron ore, dolomite, diopside, hypodiopside, actinolite, tremolite, fushanite, chlorite, followed by clay minerals such as muscovite, biotite, kaolinite, sericite, and harmful minerals As arsenopyrite, it also contains high carbonaceous matter and iron sulfide minerals. The total mineral content is more than 50 kinds. For such complex iron-molybdenum-bismuth-tungsten polym...

AI Technical Summary

Problems solved by technology

In addition, the beneficiation process currently adopted by manufacturers of bismuth recovery from such ores in my country is relatively complicated, such as molybdenum-bismuth and other flotation-bismuth-sulfur flotation, followed by molybdenum-bismuth separation, bismuth-sulfur separation, and bismuth concentrate desiliconization process In order to realize the separation of bismuth and sulfur, sodium cyanide and a large amount of highly corrosive sodium sulfide are also added in the process

The defects of the beneficiation process not only make the comprehensive recovery rate of resources low, but also the highly corrosive and highly toxic agents used in the process application cause serious ring mirror pollution

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