Method for improving antimony, lead and associated silver flotation recovery rate by adopting combination collecting agent

Abstract

The invention relates to a combination collecting agent. The combination collecting agent is composed of amyl sodium xanthate, 25 # black powder and butyl ammonium black powder; the weight ratio of the amyl sodium xanthate, the 25 # black powder and the butyl ammonium black powder is 2-5:20-35:15-30. By the adoption of the combination collecting agent, the antimony lead and associated silver flotation recovery rate can be greatly increased during flotation, the antimony and lead recovery rate is kept above 49% and can reach 59.09%, the lead recovery rate can reach 94.44%, the antimony recovery rate can reach 65.78%, the silver recovery rate can reach 88.31%, and the effect is obvious. In addition, the combination collecting agent can be adopted for operation under the situation that an original production technology is not changed, agentia is easy to add, the use rate of mineral resources is greatly increased, and the non-poisonous and non-pollution effect is achieved.

Description

technical field [0001] The invention relates to the flotation recovery of antimony, lead and associated silver from lead-zinc-antimony polymetallic ore; the invention particularly relates to a method for improving the flotation recovery rate of antimony, lead and associated silver by using a combined collector. Background technique [0002] The Sangrize mining area is located in Longzi County, Tibet Autonomous Region. It is the super-large lead-zinc polymetallic complex sulfide ore base discovered so far in the Tibet Autonomous Region; ore selection. The main antimony minerals in the ore are stipyrite and brittle stibnite, galena and stibnite are less; the zinc minerals are mainly sphalerite; the silver minerals are mainly silver-antimony tetrahedrite. Brittle stipyronite, stipyronite, galena, sphalerite, and pyrite have different degrees of dissolution and metasomatism, and it is difficult to dissociate monomers. Therefore, only lead-antimony mixed concentrates and zinc co...

AI Technical Summary

Problems solved by technology

A large number of experimental studies and practices have shown that the ore in this raw ore is sensitive to the pH value of flotation. The experimental research and production practice show that the flotation of the raw ore is more efficient under the condition of neutral pH=7.0~7.5. Appropriate, the recovery rate of lead-antimony flotation is high; because the raw ore contains a certain amount of zinc minerals, it is impossible to increase the amount of collector indefinitely in the priority flotation operation to enhance the collection effect. Besides, if there is a large amount of excess collector Influx of lead and antimony concentration operations, the grade of lead and antimony concentrate will not be controlled, and the grade of lead plus antimony will not be maintained above 45%, which will not only affect the economic benefits of the enterprise, but also increase product transportation costs, and directly affect downstream smelting Economic Benefits of the Enterprise

[0004] For example, the application number is 201010614789.1, and the publication number is CN102218375A, a Chinese invention patent "a method for improving the grade of flotation concentrate of muddy high-sulfur brittle stimonite" , the patent discloses a method for improving the grade of the flotation concentrate of muddy high-sulfur brittle styrofoam-lead ore, which requires adding special inhibitors such as tannin extract to improve the grade of the lead-antimony concentrate; Complex and high investment cost; and the highest grade of lead and antimony obtained by flotation can only reach 48.03%, and the highest recovery rate of lead and antimony can only reach 77.34%

[0005] Another example is that the application number is 201310413919.9, and the publication number is CN103433142A Chinese invention patent "a kind of flotation method of fine-grained and complex brittle styroite", which discloses A flotation method for fine-grained and complex brittle pyrosterite, including carbon-lead separation, lead slime separation, and lead-sulfur separation; this method requires a special separation process to obtain products; the special separation process leads to high flotation investment costs , and the highest grade of lead and antimony in flotation can only reach 43.5%, and the highest recovery rate of lead and antimony can only reach 66.12%