Dressing process of gold ores

Abstract

A dressing process of gold ores comprises the step of pulp particle size grading. The difference lies in that the dressing process also comprises the steps of ore dressing and pulp washing, dispensing and stirring at fixed time for reaction, ore floating at fixed time, tailing discharging at fixed time, etc, therefore, in the ore floating procedure, the pulp viscosity does not affect the floating upward speed of the sulfides, the sulfide particles with high proportion do not exist, the floatation concentrate pulp does not flow back in the opposite direction, the heavy metals and the valuable elements can be maximally recovered and the discharged tailings do not contain sulfides and heavy metals. The single floatation ore groove circulating linkage mechanism is adopted and is automatically monitored and regulated by an automatic control system, thus greatly shortening the ore floating process. Compared with the prior art, the dressing process can save energy by more than 50% and is especially suitable for the gold mine industry.

Description

Technical field: [0001] The invention relates to a beneficiation process, in particular to a gold ore beneficiation process. Background technique: [0002] At present, in the beneficiation of gold ore, the graded pulp and the flotation agent specified by the index are continuously added to the pulp mixing tank while the pulp mixing tank is working. The pulp mixing tank has been stirred evenly or not. The pulp that has reached the standard and the pulp that has not reached the standard are continuously added to the first-level rough flotation tank, and the first-level rough flotation tank is continuously supplied to the first-level rough flotation tank by part of the concentrate pulp floated from the part of the reaction time that meets the standard Fine flotation tank, the first-level fine flotation tank can only float part of the added pulp to the second-level fine flotation tank, and the second-level fine flotation tank can only return part of the added pulp The second fl...

AI Technical Summary

Problems solved by technology

Although the 3-stage fine flotation process is to solve the problems of incomplete flotation and improve the purity of the concentrate, there are still some rough concentrate pulps that have not been flotation in time to return to the starting point of the 1-stage rough flotation tank, 1 Part of the concentrated ore pulp returned in the primary rough flotation tank and the original supply pulp whose reaction time did not meet the standard, and part of the original supply pulp that was not flotation in time although the reaction time reached the standard, passed through the second grade rough flotation tank to the sixth grade Coarse flotation tank, and then through the 1st level sweep flotation tank to the 6th level sweep flotation ore tailing tank. Due to the continuous reflow of the ore pulp, the flotation of the ore pulp is not timely and complete, resulting in some sulfides and heavy metals remaining in the discharged tailings; The buoyancy of the beneficiation process is not enough to make it float up, so that it remains in the tailings and is discarded; while the pulp of the ultrafine part of the grinding ore can completely separate the sulfide, but the ultrafine part of the pulp containing a small amount of sulfide has a certain The viscosity of the sulfide in the flotation process affects the floating speed of the sulfide, resulting in a low recovery rate