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2023
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Invention
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Method for carbon-catalysed thiosulfate leaching of gold-bearing materials. The present disclosur... |
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2020
|
Invention
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Method for recovering gold from refractory materials. The present disclosure is directed to a pro... |
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Invention
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Method for recovering precious metals from thiosulfate leach solutions.
The present disclosure i... |
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Invention
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Method for pre-treatment of gold-bearing oxide ores. The disclosure relates to pre-treatment of p... |
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2017
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Invention
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Co-current and counter current resin-in-leach in gold leaching processes. A method and system are... |
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2016
|
Invention
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Separation of copper minerals from pyrite using air-metabisulfite treatment. The present inventio... |
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2014
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Invention
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Method for arsenic oxidation and removal from process and waste solutions. The disclosure relates... |
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Invention
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Method for arsenic oxidation and removal from process and waste solutions. 5+). A carbon additive... |
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2013
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Invention
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Alkaline and acid pressure oxidation of precious metal-containing materials. The present inventio... |
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Invention
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Recovery of gold from roaster calcine leach tailings. A method to recover gold lost in roaster ca... |
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2012
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Invention
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Method for recovering precious metals and copper from leach solutions. The present disclosure is ... |
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Invention
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Method for recovering precious metals and copper from leach solutions. A process for recovering a... |
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2011
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Invention
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Production of zinc sulphate concentrates from a dilute zinc sulphate solution. In an embodiment, ... |
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2010
|
Invention
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Separation of copper minerals from pyrite using air-metabisulfite treatment. Embodiments of the p... |
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2009
|
Invention
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Reduction of lime consumption when treating refractory gold ores or concentrates. The present inv... |
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2008
|
Invention
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Microbial pre-treatment of double refractory gold ores.
The present invention is directed to rec... |
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Invention
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Process for controlling acid in sulfide pressure oxidation processes. The present invention is di... |
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Invention
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Process for recovering gold and silver from refractory ores. The present invention is directed to... |
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Invention
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Method to improve recovery of gold from double refractory gold ores. The present invention is dir... |
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Invention
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Process for recovering platinum group metals using reductants. In the process of recovering plati... |
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Invention
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Process for mercury control during pressure oxidation. A method for suppressing mercury dissoluti... |
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2007
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Invention
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Selective precipitation of metal sulfides. A method for recovering zinc ions by selective zinc su... |
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Invention
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Selective precipitation of metal sulfides. A method for recovering zinc ions by selective sulfide... |
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Invention
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Process for reduced alkali consumption in the recovery of silver. The present invention is direct... |
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Invention
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Autoclave with underflow dividers. The present invention is directed to a multi-compartment autoc... |
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2006
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Invention
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Thiosulfate generation in situ in precious metal recovery. Precious metal recovery by thiosulfate... |
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2005
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Invention
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Reduction of lime consumption when treating refractor gold ores or concentrates. The present inve... |
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Invention
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Treatment of reclaim water for use in metals recovery. A process for improving the recovery of go... |
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Invention
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Treatment of reclaim water for use in metals recovery.
A process for improving the recovery of g... |
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2003
|
Invention
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Process for recovering arsenic from acidic aqueous solution. A process for the recovery of arseni... |
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2000
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Invention
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Process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin... |
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Invention
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Nozzle for low pressure flash tanks for ore slurry. A wear-resistant flash tank pressure let down... |
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Invention
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Removal of boron and fluoride from water. A process for reducing boron and/or fluoride ion conten... |
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1999
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Invention
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Flotation and cyanidation process control. A method for controlling a froth flotation system in a... |
