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5755853 |
Process for the treatment of solid residues containing metals, in particular residues from the cleaning of household garbage incineration smoke
This process comprises; mixing (1) the solid residues with a solid reducing agent; treating (2) the mixture in a furnace at a temperature above 1000° C. to obtain (3) a vitrified product rendered...
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4874429 |
Hydrometallurgical process for the recovery of silver from copper electrolysis anode sludge
Silver is recovered from an anode sludge by initially chlorinating the sludge in a slurry with nascent chlorine. The nascent chlorine is produced in situ by addition of sodium hypochlorite to the...
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4389248 |
Method of recovering gold from anode slimes
A method of recovering gold from anode slimes resulting from electrolytic copper refining comprises treating the anode slimes to remove copper and selenium, forming an aqueous slurry from the...
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4163046 |
Recovery of selenium
A hydrometallurgical process for treating copper refinery anode slimes containing selenium, lead and precious metals in which a selenium product of better than 99.7% purity can be produced and the...
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4094668 |
Treatment of copper refinery slimes
The gold, silver and selenium content of copper refinery slimes are recovered by first leaching the slimes with dilute sulfuric acid at an elevated temperature and at a partial pressure of oxygen...
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4047939 |
Slimes treatment process
Slimes from electrolytic copper refinery are first treated by leaching them with dilute sulphuric acid under an oxygen partial pressure of up to 50 psi and an elevated temperature, until copper and...
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4033763 |
Process for recovery of selected metal values from waste waters
A process for economically recovering metal values, especially precious metal values, from waste waters comprising a mixture of natural surface water, industrial waste water and organic waste,...
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3944414 |
Treatment of anode slime from copper electrolysis
Process for the flotation of anode slime from copper electrolysis comprising subjecting the anode slime, as a preliminary treatment, to attrition treatment in combination with a copper leaching...
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3291597 |
Process for recovering metal values utilizing fused salts
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T904009 |
Title is not available
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