Composite collecting agent for bulk floatation of copper sulfide molybdenum ores

Abstract

The invention discloses a composite collecting agent for bulk floatation of copper sulfide molybdenum ores. The collecting agent is a stable oily product which is formed by mixing 50%-70% of thiocarbamic acid ester, 2%-10% of thiophosphoric acid ester, 10%-30% of mixed non-polar hydrocarbon oil and 10%-20% of terpene alcohol. The collecting agent has the advantages that the thiocarbamic acid ester has the selective chelation on the exposing active points, such as copper and molybdenum, on the surfaces of minerals, the thiophosphoric acid ester has the selective adsorption function on the copper-containing minerals, the non-polar hydrocarbon oil can be adsorbed on the surface of the copper sulfide molybdenum ores through the Van der Waals force, and the terpene alcohol is a solution medium and has good air bubble property, so under the synergistic effect of the thiocarbamic acid ester, the thiophosphoric acid ester, the mixed non-polar hydrocarbon oil and the terpene alcohol, a good ore selection index can be obtained, and the agent mechanism is simplified; the collecting agent is used at the ore slurry temperature of 5-35 DEG C, and the usage amount is between 80-160g / t according to the change of the contents of usable minerals in the ores.

Description

technical field [0001] The invention belongs to the technical field of flotation reagents, and in particular relates to a composite collector for mixed flotation copper-molybdenum sulfide ore. Background technique [0002] Copper-molybdenum sulfide ore is an important source of copper and molybdenum for human beings. Copper is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. Copper is second only to aluminum in the consumption of non-ferrous metal materials in China. Molybdenum has the advantages of high strength, high melting point, corrosion resistance, wear resistance, etc. It is often used as an additive to produce various alloy steels, or to form advanced alloys with tungsten, nickel, cobalt, zirconium, titanium, vanadium, rhenium, etc. to improve its High temperature strength, wear resistance and corrosion resistance, widely used in aviation, machinery manufacturing, defense industry...

AI Technical Summary

Problems solved by technology

The selectivity of these collectors is not strong when they are used alone, and the required dosage is relatively large. The preparation and addition steps in production practice are relatively cumbersome

For copper-molybdenum sulfide ores with complex properties, it is difficult to obtain a good selection index by the conventional chemical system

Alkyl xanthate, which is widely used at present, has weak selectivity and poor stability, and will decompose when exposed to heat, water and acid. Dithiophosphate is a widely used sulfide mineral after xanthate Collector, its collection ability is weak, it has foaming property, excessive use will lead to too much foam, affect the flotation process and concentrate quality

Ester collectors are relatively stable in both alkaline and acidic pulp environments, and their selectivity is better than that of alkyl xanthates and dithiophosphates, but their collection capacity is weak and their prices are high

Images