According to this 0.166 parts by weight of zinc should be needed to replace 1 part of gold and 0.303 parts of zinc to replace 1 part of silver. Clennell, however, prefers the reaction. KAg 2 + 2KCN + Zn + H20 = K2Zn 4 + Ag + H + KOH, in accordance with which it would require 0.332 parts of zinc to 1 part of gold and 0.606 parts of zinc ...
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Metallurgical ContentThe Lead Zinc Copper Flotation and Separation CircuitCrushing PlantGrinding CircuitFlotation PlantConcentrate Thickening and FilteringSamplingSummary The flowsheet in this study was designed to treat 500 tons per day of a complex base metal ore containing gold and silver values. The presence of free gold offers opportunity to recover these values in the grinding circuit so ...
Extraction of silver and gold from the lead Parkes process is used in this. It is conducted as follows At a height of about eight feet from the level of the floor the cast iron pots are placed in brickwork, each having a separate furnace. The largest holds about twelve tons, and the other two three tons.
electrocoagulation technology with iron electrodes that is a develop; ed alternative technology for the Merril Crowe process. The average gold and silver content in pregnant solution was 4.27 and 283 ppm respectively and the recoveries were 92% for gold and 95% for silver, with optimum
The discharge from the tube mill is first passed through a 4 mesh screen to separate out coarse material, which is laundered direct to the classifier. The remainder of the pulp, diluted to give a W/S ratio of 1/1, passes to a Denver Sub A Flotation Cell, from which 60% of the gold and silver in the feed is removed as a concentrate.