Gold - Copper Ore divided into two kinds of oxide ore and sulfide ore. In the sulfide ore, the primary metal minerals chalcopyrite, pyrite. Addition arsenopyrite, pyrrhotite, chalcocite, bornite like; gangue minerals are quartz, sericite, feldspar and the like. Gold and chalcopyrite have a close relationship with each other. In addition, gold is also found in pyrite and other sulfides, and the gangue contains little gold. The main method for sorting such ore is to select gold, copper and sulfur mixed concentrates by flotation, and then separate the flotation to obtain gold-copper concentrate and gold-sulfur concentrate. The gold-copper concentrate is sent to the smelting plant for comprehensive recovery; the gold-sulfur concentrate can be cyanated and leached, and the gold is recovered by smelting. If the gold particle size is coarse, it is also possible to increase the amalgamation and re-election work to recover the coarse gold before the flotation. Sodium acetate is used as a buffering agent for seasoning, which can alleviate bad odor and prevent discoloration, and has certain anti-mold effect. Sodium acetate can also be used as a sour agent for seasoning, sauerkraut, mayonnaise, fish cake, sausage, bread, sticky cake and so on. Sodium acetate is mixed with methylcellulose and phosphate to improve the preservation of sausages, breads, stickies, etc. Sodium Ethanoate,Sodium Acetate Sigma,Sodium Acetate And Water,Sodium Acetate Anhydrous ZIBO JUNTU INTERNATIONAL TRADE CO.,LTD , https://www.sdjuntuchem.com
For partially oxidized gold-copper ore, ore is more difficult to handle due to the inclusion of iron hydroxide and copper oxide minerals. When the flotation-cyanide combined process is adopted, since the copper oxide is difficult to float, the gold-containing iron hydroxide cannot be recovered by the flotation method, and the copper mineral has an effect on cyanidation, so the recovery effect is poor. This type of ore is best used in the combined process of metallurgy. The first stage recovers the gold-containing sulfide by flotation, the second stage changes the agent to recover the copper oxide and the gold film on the surface, and the third stage uses the acid leaching to recover the copper-containing gold-containing sulfide whose surface has been cleaned.
The gold ore processed in a gold mine in Shandong is a gold-copper mine. The main metallic minerals are: pyrite, chalcopyrite, native gold, sphalerite, galena, silver, lead ore; gangue minerals are quartz, sericite, feldspar, biotite and the like. Natural gold and silver gold ore are 30% and 67%, respectively, of gold minerals. Most of the natural gold is distributed in pyrite. The natural gold particle size is 0.01 to 0.075 mm, and the silver gold ore particle size is 0.01 to 0.053 mm. The beneficiation uses a combined flotation-separation flotation-cyanide process. The flow chart is shown in the figure below. The main technical and economic indicators are: tailings containing gold 0.35 g / ton, gold-copper concentrate containing gold 312.57 g / ton, tailings containing gold 0.35 g / ton, cyanide operation ore containing gold 24.45 g / ton, dipping The gold content is 1.50 g/ton, the leaching rate is 93.87%, the washing rate is 99.39%, the replacement rate is 99.56%, the total recovery of gold is 92.8%, and the treated ore is 600 tons/day. 