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Elektroieguve×Elinghamas diagramma×Sārmainība (Slag Basicity)×
NozareKalnrūpniecības inženierijaKalnrūpniecības inženierijaKalnrūpniecības inženierija
SaimeProcess / pipelineProcess / pipelineProcess / pipeline
Izcelsmes gads189019441950
AutorsIndustrial Electrometallurgy PracticeHarold Jeffrey Torreyson EllinghamPyrometallurgical Practice
TipsElectrochemical metal extraction and purificationGibbs free energy diagram for high-temperature reactionsSlag composition parameter for controlling roast/smelt conditions
PirmavotsHabashi, F. (2011). Electrometallurgy: principles, processes and materials. Metallurgical Transactions, 29(7), 1569-1589. link ↗Ellingham, H. J. T. (1944). Reducibility of oxides and sulfides. Journal of the Society of Chemical Industry, 63(5), 125-160. link ↗Barnes, J. F., Edwards, C. C., & Sims, R. L. (2010). Copper smelting and refining: pyrometallurgical fundamentals. JOM, 52(12), 38-43. link ↗
Citi nosaukumiElectrodeposition, Electrolytic ExtractionGibbs Free Energy Diagram, High-Temperature Reduction DiagramBasicity Index, Slag Chemistry Parameter
Saistītās333
KopsavilkumsElectrowinning is an electrochemical process that extracts and refines metals from dilute leaching solutions by passing electric current through an electrolytic cell. Metal ions migrate to the cathode (negative electrode) and are reduced to pure metal, while impurities remain in solution. This process is essential for copper, zinc, cobalt, nickel, and gold refining, producing metals of exceptional purity.The Ellingham Diagram, introduced by Harold Ellingham in 1944, is a graphical representation of the Gibbs free energy change for oxide formation and reduction as a function of temperature. It is an essential tool for predicting the thermodynamic feasibility of ore reduction and selecting appropriate reducing agents and temperatures for smelting and roasting operations.Slag basicity is a measure of the composition of slag formed during smelting and roasting operations. It is typically expressed as the ratio of basic oxides (CaO, MgO) to acidic oxides (SiO2). Basicity controls slag fluidity, viscosity, and reactivity, directly affecting metal recovery, processing temperature, and product quality. It is a critical parameter in copper, nickel, and lead smelting.
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ScholarGateSalīdzināt metodes: Electrowinning · Ellingham Diagram · Slag Basicity. Izgūts 2026-06-18 no https://scholargate.app/lv/compare