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

A technology of thiocyanic acid and oxidized ore, which is applied in flotation, solid separation, etc., can solve the problems of difficult process control, slow vulcanization reaction, loose and falling sulfide film, etc., achieve less dosage of chemicals and improve recovery rate , the effect of fast vulcanization speed

Active Publication Date: 2019-05-10
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for vulcanization flotation of copper-lead-zinc oxide ore with a saturated solution of thiocyanic acid. In the flotation process of white lead ore, a saturated solution of thiocyanic acid is used as a slurry, and the sulfide is first vulcanized for 5 minutes, and then butyl yellow is added. medicine as collector, the dosage is 5.8×10 -4 mol / L, act for 3min, and finally add 2.2×10 -5 L / L 2 # The oil acts as a foaming agent for 1 minute, and scrapes and foams for 3 minutes to obtain a concentrate recovery rate of 86.8%.

[0017] Compared with the sorting scheme without vulcanizing agent, the method improves the recovery rate of white lead ore by 20 percentage points.

Embodiment 2

[0019] A method for vulcanization flotation of copper-lead-zinc oxide ore with a saturated solution of thiocyanic acid. In the flotation process of white lead ore, a saturated solution of thiocyanic acid is used as a slurry, and the sulfide is first vulcanized for 5 minutes, and then butyl yellow is added. medicine as a collector, the dosage is 2.32×10 -3 mol / L, act for 3min, and finally add 2 # oil as a foaming agent at 8.8 x 10 -5 L / L, scrape and soak for 3 minutes, and the concentrate recovery rate is 88%.

[0020] Compared with the sorting scheme without adding vulcanizing agent, the method improves the recovery rate of white lead ore by 18 percentage points.

Embodiment 3

[0022] A method for vulcanization flotation of copper-lead-zinc oxide ore with a saturated solution of thiocyanic acid, in the flotation process of smithsonite, the method of vulcanization-flotation is adopted, and a saturated solution of thiocyanic acid is used as the pulp, first Vulcanize for 5 minutes, use butyl xanthate as collector, the dosage is 4.64×10 -3 mol / L, act for 3min, and finally add 2 # The oil acts as a foaming agent for 1min, and the dosage is 2.2×10 -5 L / L, scrape and soak for 3 minutes, and the concentrate recovery rate is 79.2%.

[0023] Compared with the sorting scheme without adding vulcanizing agent, the method improves the recovery rate of smithsonite by 61 percentage points.

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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...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/012B03D103/02
Inventor 卜显忠陈瑶陈伟张崇辉王森田晓珍
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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