Method for vulcanization and flotation of copper-lead-zinc oxide ores by trithiocyanuric acid saturated solution

Abstract

The invention discloses a method for vulcanization and flotation of copper-lead-zinc oxide ores by trithiocyanuric acid saturated solution. In the copper-lead-zinc oxide ore vulcanization and flotation process, trithiocyanuric acid is used as a vulcanizing agent, the saturated solution of the trithiocyanuric acid is used for size mixing, under the conditions of the butyl xanthate dosage of 5.8*10<-4>mol / L-2.32*10<-3>mol / L and the 2# oil dosage of 2.2*10<-5>-8.8*10<-5>L / L, white lead recovery rate is increased from 50.2-67.44% to 86.8-90.2%, smithsonite recovery rate is increased from 16.7-18.3% to 71-91.7%, malachite recovery rate is increased from 12.3-14.3% to 60.0-63.7%, white lead, smithsonite and malachite are effectively vulcanized by the trithiocyanuric acid under the process conditions, and the recovery rate of the copper-lead-zinc oxide ores is increased.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to the vulcanization flotation of copper-lead-zinc oxide ore, in particular to a method for vulcanization flotation of copper-lead-zinc oxide ore in a saturated solution of thiocyanic acid. Background technique [0002] As mineral resources become increasingly poor and complex, people's requirements for the comprehensive recovery rate of resources, the quality of concentrate products and the flotation separation effect continue to increase, and the flotation separation of complex polymetallic oxide ores is becoming increasingly important. Compared with copper sulfide lead-zinc ore, copper oxide lead-zinc ore has better solubility and higher surface hydrophilicity, and is not easy to float. Therefore, sulfidation before flotation is currently the most widely used method. Vulcanization is to change the surface properties of minerals by adding a vulcanizing agent, so that a la...

AI Technical Summary

Problems solved by technology

Sodium sulfide or sodium hydrosulfide is commonly used vulcanizing agent at present. This type of vulcanizing agent has the problems of slow vulcanization reaction, difficult control of the process, and poor stability of the sulfide film, and the formed sulfide film is easy to loose shedding

In particular, it is difficult to control the dosage. If the dosage of sodium sulfide or sodium hydrosulfide is too small, a sufficient reducing atmosphere cannot be guaranteed, and the vulcanization effect cannot be achieved. If the dosage is too large, it will have a significant inhibitory effect on the subsequent flotation.