Process for Leach

A review of processes for leaching of base metals from their ores has appeared recently.2 Recent developments involving the generation and composition of sulfate-, chloride-, or ammonia-based streams which are used to feed solvent extraction processes are considered briefly below. [Pg.766]

Arbiter Previously known as the Sherritt-Gordon ammonia process. A process for leaching copper from sulfide concentrates, using ammoniacal ammonium sulfate solution at 85°C and relying on air oxidation. Copper is produced from the leachate by solvent extraction and electrowinning. Sulfur is recovered as ammonium sulfate. Operated on a large scale by the Anaconda Copper Company in Montana from 1974 to 1979. See Sherritt-Gordan. [Pg.25]

CLEAR [Copper Leach Electrolysis And Regeneration] A process for leaching copper from sulfide ores by boiling with aqueous cupric chloride ... [Pg.66]

BioCOP [Biological COPper] A bacterial process for leaching copper from its ores. BioCOP uses an agitated tank for oxidation and leaching of copper sulfides. Developed by BUP Billiton and Codelco, which operated a demonstration plant in Chuquicamata, Chile, from 2003. Several plants have been operated commercially in Chile since then. [Pg.43]

BioNIC [Biological NICkel] A biological process for leaching nickel from its ores. It comprises bacterial leaching, solvent extraction, and electrowinning. Developed by BHP Billiton at Yabulu from 1999, but not commercialized by 2004 because no ore body of a suitable concentration and size had been identified. [Pg.45]

BIOPRO A biological process for leaching gold from refractory ores. Developed by Newmont Mining. [Pg.45]

BioZINC A biological process for leaching zinc from zinc sulfide ores, developed by BHP Billiton. [Pg.46]

Dynatec A pressure oxidation process for leaching copper from sulfide ores. Low-grade coal is added to disperse the molten sulfur produced. Being piloted by Dynatec Corporation at Fort Saskatchewan, Canada. [Pg.118]

Heap leaching A general name for processes for leaching ores with various aqueous solutions in order to extract metals. It is an inexpensive process, normally used with low-grade ores. The leachate must be well contained in order to prevent contamination of groundwater. [Pg.163]

HydroCopper A process for leaching copper from sulfide ores, using dilute aqueous cupric chloride. The copper is precipitated from the leach solution by sodium hydroxide, and the precipitated cuprous oxide is reduced to the metal by hydrogen. An intergrated chlor-alkali cell provides the sodium hydroxide and hydrogen. Planned for demonstration in Finland in 2003. [Pg.178]

HydroZinc A biological process for leaching zinc from heaps of zinc sulfide ore. Naturally occurring bacteria attack the ore, and the leachate is then neutralized and extracted with a solvent. The metal is produced from this liquor by electrowinning. The process was developed by Teck Cominco in British Columbia and piloted between 2000 and 2002. [Pg.181]

SABA [Spherical Agglomeration-Bacterial Adsorption] A microbiological process for leaching iron pyrite from coal. The bacterium Thiobacillus ferrooxidans adsorbs on the surface of the pyrite crystals, oxidizing them with the formation of soluble ferrous sulfate. Developed by the Canadian Center for Mineral and Energy Technology, Ottawa. In 1990, the process had been developed only on the laboratory scale, using coal from eastern Canada. [Pg.315]

Sulfunc Acid 13 80-210 27-99 — S — — plus 13 percent by volume MnSOg and Mn, m process for leaching crude MnO ANoy C - 18 mpy... [Pg.714]

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