Preparation method of auxiliary collecting agent for improving recovery rate of associated gold in antimonite

Abstract

A preparation method of an auxiliary collecting agent for improving the recovery rate of associated gold in antimonite comprises the following steps: first mixing oxalic acid, hydrochloric acid and water at a mass ratio of (1-1):(1-2):(2-3) to obtain a solution 1; then adding ammonium phosphate into the solution 1 at a mass ratio of (1-2):(2-5), and performing stirring at 70-75 DEG C to dissolve the ammonium phosphate to obtain a solution 2; and next, adding ammonium sulfolipid into the solution 2 at a mass ratio of (1-2):(1-3), conducting reaction for 2-4 h at 2-2.5Mpa to obtain a liquid agent, namely the auxiliary collecting agent.

Description

1. Technical field [0001] The invention relates to a preparation method of an auxiliary collector for improving the recovery rate of associated gold in stibnite. 2. Background technology [0002] At present, the flotation recovery of stibnite and associated gold at home and abroad generally adopts the optimal flotation process or the mixed flotation process. The priority flotation process is to preferentially float antimony sulfide minerals under certain conditions, and then flotation gold-containing sulfide minerals; the mixed flotation process is to add certain chemicals under certain conditions to float antimony and gold to form a mixed concentrate. Although these two methods can effectively recover antimony-gold minerals, the priority flotation process is likely to introduce too much gold-bearing minerals into antimony concentrates, reduce the grade of antimony concentrates and exceed the standard of harmful elements, so mixed flotation is generally used. Separate the p...

AI Technical Summary

Problems solved by technology

Although these two methods can effectively recover antimony-gold minerals, the priority flotation process is likely to introduce too much gold-bearing minerals into antimony concentrates, reduce the grade of antimony concentrates and exceed the standard of harmful elements, so mixed flotation is generally used. Separation process after selection

Mixed flotation generally uses sulfuric acid or copper sulfate to activate first, and then add xanthate, black powder, sulfur nitrogen, etc. for flotation collection. The flotation recovery rate of sulfide ore is between 86% and 91%. When mica or quartz has high gold content, the recovery effect of gold is not obvious if the above collectors are used, and the recovery rate of gold is only 50-60%. The reason is that: on the one hand, mica or quartz is not as buoyant as Other sulfides are good; on the other hand, because mica or quartz itself is an oxide mineral, its buoyancy is poor; thirdly, the presence of iron ions in gold-bearing minerals in the same quality affects its buoyancy