Process / pipelineSmelting and Roasting Control

Slag Basicity

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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Sources

  1. Barnes, J. F., Edwards, C. C., & Sims, R. L. (2010). Copper smelting and refining: pyrometallurgical fundamentals. JOM, 52(12), 38-43. DOI: 10.1007/s11837-000-0192-y
  2. Davenport, W. G., King, M., Schlesinger, M., & Biswas, A. K. (2002). Extractive metallurgy of copper (4th ed.). Pergamon Press. link

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Referenced by

ScholarGateSlag Basicity (Slag Basicity Index for Pyrometallurgical Processes). Retrieved 2026-06-04 from https://scholargate.app/en/mining-engineering/slag-basicity