In 1977, Falconbridge patented the chlorine leach nickel refining process that had been developed inhouse. The late 1970s saw the company play a role, alongside Inco, in the environmental reclamation efforts undertaken in the Sudbury region.
Novel redesign of a pressure leach autoclave by a South African platinum producer Abstract The Impala Platinum Limited Base Metals Refinery in Springs, South Africa, refines convertor matte containing base metals and PGM's (platinum group metals) using a hydrometallurgical process. In addition to
Feb 01, 2005· The sealing process that takes place after anodizing and dying is what gives the anodic coating its characteristics of corrosion resistance and relative degree of lightfastness. So, if your black dyed anodic coating is of the correct thickness, has absorbed enough black dye and is properly sealed, no black dye should leach out and it should be ...
:: Outotec's Innovative Nickel Matte Leach Process Even though nickel plant feed increasingly comes from laterite sources, the continuing treatment of sulfide ore in smelters means that nickel matte production will continue far into the future, according to Outotec, which has developed a chloridebased recovery process for matte and other ...
Leaching of nickelcopper matte and recovery of platinum group metals Sherritt's matte leach process uses sulphuric acid leaching in a combination of atmospheric and/or pressure leaching steps to quantitatively dissolve nickel and copper in nickelcopper matte and produce a highgrade platinum group metal (PGM) concentrate for refining.
The nonoxidative FirstStage Leach (FSL) process extracts the vast majority of the Ni, Co, Fe and As values. The SecondStage Leach (SSL) process comprises the aqueous pressure oxidation of a predominantly Cu₂S feed under aciddeficient conditions.
Leaching and solidliquid separation testwork was carried out on matte produced from the Hartley trial mine in bench scale equipment. The objectives of the program were to prove the process flowsheet as well as to provide engineering design data for the project team.
A second common refining process is leaching the metal matte into a nickel salt solution, followed by the electro winning of the nickel from. Contact US nickel matte chloride leaching Outotec. This new approach incorporates multiple leaching steps in Outotec OKTOP . Nickel Matte Chloride. Leaching Process, is suitable for nickel refining and is a.
Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. Process Description24 Mining produces ores with less than 1 percent copper. Concentration is accomplished at the
mattecontaining base metals and platinum group metals (PGMs) using a fivestage hydrometallurgical process. The secondstage leach produces a PGMrich residue through the extraction of copper and any remaining base metals from the firststage leach solid residue material. Novel redesign of welded pressure leach autoclaves for the platinum industry
Recovery of nickel from a nickelcopper matte; the matte is first crushed and roasted to remove sulfur, and the copper is acidleached, filtered off, and electrolyzed; the residual solids are melted, cast as anodes, and refined electrolytically to produce nickel.
:: Outotec's Innovative Nickel Matte Leach Process. Because the Outotec process is based on a calcium chloride solution, it enables easy acid and base regeneration. Base metals are leached in oxidative conditions at atmospheric pressure, iron is precipitated with limestone, and base metals are purified by solvent extraction,...
Copper sulphate solutions are produced during the pressure leaching of firststage leach residue in a typical base metal refinery process. Apart from impurities such as selenium and tellurium, this leach solution also contains other precious metals (Rh, Ru, and .
during the oxidising leach process in sulphuric acid media. In addition slag inclusions in matte leads to contamination of the PGM residues with silica, fayalite, magnetite and trevorite phases.
Aug 01, 2005· The end product is an ironnickel alloy (ferronickel), or a high grade nickel matte can be produced by adding sulphur. The Caron hydrometallurgical process can also be used for limonitic ores or a mixture of limonite and saprolite.
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