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Click to add WeChatAntimony gold ore is one of the resources for obtaining gold minerals. The mineral properties of this type of gold ore are complex, mainly including stibnite, natural gold, pyrite, arsenopyrite, etc. Among them, pyrite and arsenopyrite are the main Since the gold in the antimony-containing gold ore is embedded in fine particles and the stibnite consumes cyanide and oxygen, the ore dressing process is mainly based on flotation.
The focus of the beneficiation of antimony gold ore is the flotation separation of pyrcite, pyrite, arsenopyrite and other minerals. According to the The specific reagents used, the flotation method of antimony-containing gold ore can be divided into sodium hydroxide flotation method, sodium sulfide-sodium hydroxide or sodium carbonate flotation method, oxidant flotation method and butylammonium black drug flotation method.
The flotation process of antimony gold ore is to add sodium hydroxide into a ball mill and grind it together with minerals. In the process, the antimony is suppressed by grinding, and then copper sulfate is used to activate the pyrite and arsenopyrite. The pH value of the slurry is adjusted to 8-9. A collector and foaming agent are added to preferentially float out the pyrite and arsenopyrite. sand to obtain gold concentrate. Lead salt or copper salt is added to the flotation tailings to activate the stibnite, and then collectors and foaming agents are added for flotation separation to obtain antimony concentrate.
The method of sodium sulfide-sodium hydroxide or sodium carbonate flotation antimony gold ore is to combine sodium hydroxide and Sodium carbonate is added to the ball mill, and then lead acetate, copper sulfate, butyl xanthate and sulfuric acid are added in sequence for mixing. Flotation to obtain antimony-gold mixed concentrate and gold tailings. The obtained antimony-gold mixed concentrate is then sent to the regrinding operation. During the grinding process, sodium hydroxide, butyl xanthate, and copper sulfate are added and inflated to complete flotation separation. The floating product is gold coarse concentrate. The product in the selection tank is antimony concentrate. The floated gold coarse concentrate is then refined by suppressing the stibnite using the sodium sulfide-sodium hydroxide method, and finally obtains gold concentrate and low-grade antimony concentrate.
Oxidant flotation The antimony gold ore method is to add oxidant (bleaching powder) or potassium permanganate before flotation separation of the mixed concentrate to keep the solid-liquid ratio of the pulp at 1:3 and the stirring time is 1 min< /strong>, then add 100g/t lead acetate, and use xanthate as a collector to float antimony. The tailings are gold-bearing pyrite concentrate.
The method of butylammonium black liquor flotation of antimony gold ore is to usebutylammonium black liquor as a collector. , this collector has a strong ability to collect stibnite, but a weak ability to collect arsenopyrite and pyrite, so it can effectively achieve flotation separation. The process is to first select coarse-grained single natural gold through gold trap or gravity selection in the grinding and classification operation, and then use priority flotation< /strong>, use lead salt as the activator of stibnite, use sulfuric acid to adjust the pH value of the slurry, butylammonium black powder as the collector, pine alcohol oil as the foaming agent,in the natural pH or weak acidity Stibnite is flotated from the slurry to obtain antimony concentrate. The flotation tailings are gold-containing arsenopyrite coarse concentrates. Then add butyl xanthate to the tailings, and add copper sulfate for activation if necessary. Add a frother to float out the gold-bearing arsenopyrite concentrate and extract gold from it.
The above is the flotation gold extraction process of 4 antimony gold mines, because antimony-containing gold ores are difficult to recover , in the actual mineral processing, the flotation process selected for different carriers of antimony gold minerals is also different. Therefore, the editor recommends that you first find a mineral processing manufacturer to conduct a mineral processing test, and customize the process flow and requirements of the actual mineral processing plant based on the test resultsGold ore beneficiation equipment.
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