gold separator and sludge
Sewage yields more gold than top mines - ReutersJan 30, 2009 . A sewage treatment facility in central Japan has recorded a higher gold yield from sludge than can be found at some of the world's best mines.gold separator and sludge,Gold mining - WikipediaGold mining is the resource extraction of gold by mining. As of 2016, the world's largest gold .. Gold panning is mostly a manual technique of separating gold from other materials. .. The zinc is removed with sulfuric acid, leaving a silver or gold sludge that is generally smelted into an ingot then shipped to a metals refinery.Electrolytic Precipitation of Gold - 911 MetallurgistSep 14, 2016 . The gold was deposited as a firmly adherent film or plating and was recovered . The sludge was either sold to the Rand Central Company or roasted and .. a substantial recovery of cyanide was shown, the cathode deposit.