A kind of processing method of copper-containing gold mud
A treatment method and copper-gold technology, applied in the treatment field of copper-containing gold mud, can solve the problems of harsh equipment anti-corrosion requirements, poor production environment, complex equipment, etc., and achieve the effects of reducing the consumption of sulfuric acid, less electrolyte, and shorter process.
Active Publication Date: 2011-12-21
BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1
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Problems solved by technology
Gold with a gold content of 99.99% can be obtained, and the leaching rates of Cu, Pb, and Zn are all above 99%. However, this process is fed with chlorine gas, the production environment is poor, and the requirements for equipment anti-corrosion are strict.
[0006] Combined process of wet method and fire method, the combination of wet method and fire method has its advantages, but the process is relatively long and the equipment is complicated
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Embodiment 1
[0034] A copper-zinc ore concentrator in the Najran area of Saudi Arabia, the gold and silver recovery workshop of the plant, applied this method. Put the gold mud after the cake unloading of the zinc powder replacement filter press into the container, and then use the cantilever crane to hoist it to the smelting room on the first floor for storage. ) 2000x1000x500 stainless steel tank. The drying oven adopts RT2-45-9 trolley-type drying furnace with a rated power of 45kw, a rated temperature of 950°C, and a studio size (mm) of 1200x600x400. The gold mud is placed in a stainless steel pan, and there is a pan rack inside the drying furnace. After the gold mud is dried in the furnace, the water content is less than 3%. When the drying furnace is working, turn on the induced draft fan, the power of the induced draft fan is 5kw, and the induced draft fan sucks the indoor air and discharges it into the atmosphere after passing through the water film cyclone dust collector.
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The invention discloses a method for processing copper-contained gold mud, relating to a comprehensive recovering and processing method of copper-contained gold (silver or gold and silver) mud, in particular to copper-contained gold (silver or gold and silver) mud obtained by zinc powder replacement in the gold production process. The method is characterized by comprising the following steps in the processing process: (1) after the copper-contained gold mud is dried, smelting to obtain copper and gold copper and smelting slag; (2) casting the copper alloy obtained by smelting into an anode for electrolysis, and electrolyzing to obtain cathode copper; (3) after smelting to obtain smelted slag ore grinding, carrying out cyaniding leaching to recover gold and silver; (4) drying the anode mudobtained in step (2); adding slagging constituent to smelt to obtain a gold ingot and smelting slag; and (5) after carrying out ore grinding to the smelting slag obtained by smelting, recovering goldand silver by cyaniding leaching. With the method, the step of dissolving and removing copper by acid in the high copper-contained gold mud processing process is omitted by integrated innovation. Meanwhile, a link of electrolytic copper removal is added to realize zero wastewater emission and consume no medicines, such as sulfuric acid and the like, and meanwhile the electrolytic copper and the gold ingot can be obtained.
Description
technical field [0001] A treatment method for copper-containing gold mud, relating to a comprehensive recovery and treatment method for copper-containing gold (silver, or gold and silver) mud, especially copper-containing gold (silver, or gold and silver mud) obtained by replacing zinc powder in the gold production process . technical background [0002] At present, there are many kinds of refining techniques for gold mud at home and abroad, and each manufacturer chooses refining techniques according to local conditions according to different conditions such as raw material characteristics, technical foundation and market demand. In summary, there are mainly the following methods: gold pyro-smelting, gold wet-smelting and wet-fire combined process. [0003] The fire process generally includes drying-smelting. Drying in a drying furnace, mixing and melting slag to obtain gold ingots. The advantage of this method is that the process is simple and the investment is small; ho...
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IPC IPC(8): C22B7/00C22B11/00C25C1/12
CPCY02P10/20
Inventor 王云孙留根袁朝新常耀超黄海辉
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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