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hydrometallurgy
Sign in to saveHydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. Hydrometallurgy uses solutions to recover metals from ores, concentrates, and recycled or residual materials. Usually the extracting solution is aqueous (water-based), often containing additives such as acids. In select cases, the extracting solvent is nonaqueous. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. Hydrometallurgy is typically divided into three general areas: Leaching Solution concentrati
Article
12 sectionsContents
- Leaching
- Solution concentration and purification
- Solvent extraction
- Ion exchange
- Metal recovery
- Electrolysis
- Precipitation
- Research
- History
- Further reading
- References
- External links
Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. Hydrometallurgy uses solutions to recover metals from ores, concentrates, and recycled or residual materials. Usually the extracting solution is aqueous (water-based), often containing additives such as acids. In select cases, the extracting solvent is nonaqueous. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. Hydrometallurgy is typically divided into three general areas: Leaching Solution concentration and purification Metal or metal compound recovery
==Leaching== [[Image:Dicyanoaurate(I)-3D-balls.png|thumb|right|300px|Dicyanoaurate(I) ([Au(CN)2]−) is the product of heap-leaching of low-grade gold ore.]]