converter silver smelting
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Currently, there is a type of silver paste that contains 50% silver, 2% gold, 10–20% lead, and 3% each of copper and zinc. The following process is used: pre-soaking – converter – electrolytic process. Let’s discuss how this process works.
There is no need for leaching; direct converter smelting is sufficient, followed by electrolysis. Smoke and dust are used to recover lead and zinc, while the slag is used to recover copper.
The processing method works fine, but if the purity requirements for gold and silver aren’t very high, electrolysis isn’t necessary. I’m not sure about your production volume; if it’s low, then there’s no need to use electrolysis. My QQ number is 729506450 – I can help you
What kind of silver sludge is this? Why is the silver content so high? It resembles lead anode sludge, but the silver content shouldn’t be that high either. I think a semi-wet and semi-thermal method would be better; using a purely thermal method results in a lower recovery rate, while the wet method incurs higher costs. The specific approach depends on factors such as experimentation, as well as the quality of the equipment and the skills of the workers.
1# crygch can be processed using the full-wet method with gold sludge; if necessary, you can discuss this with me at xuankuangliu@163.com
There is no real need for pre-impregnation; direct conversion smelting is sufficient, and high-purity gold can be extracted from electrolytic anode slime.
For products with such high contents, it is better to use wet processing; otherwise, too much gold and silver will get trapped in the furnace bricks and slag, which is not cost-effective. The wet method can take advantage of its high direct yield while avoiding the drawback of low production volume.
I recommend using wet processing. First, the metal is leached, simultaneously adsorbed using activated carbon or ion exchange resin, and then refined separately.
For large quantities, thermal treatment is used; no pre-treatment is required, with a straight-through yield of over 80% and a recovery rate of over 97%.
Pyrometallurgical treatment is recommended, with melting in combination with copper concentrate; matte is the best agent for capturing gold and silver, achieving a recovery rate of over 97%. Some of the lead and zinc go into the dust, while some go into the slag.