Smelting

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Quick Reference

Also Known As	Metal extraction, pyrometallurgy, ore reduction, metal smelting

What is Smelting?

Smelting is a pyrometallurgical process used to extract metals from their ores by heating the ore with a reducing agent (usually carbon/coke) and a flux at high temperatures in a furnace. The reducing agent removes oxygen from metal oxide ores, and the flux reacts with impurities to form slag. The molten metal sinks to the bottom and is separated from the slag.

Properties & Characteristics

High-temperature process: 1200–1600°C typically. Reducing agents: coke (C), carbon monoxide (CO). Flux: limestone (CaCO₃) for silica impurities. Reactions: FeO + CO → Fe + CO₂; PbS + O₂ → Pb + SO₂. Products: molten metal + slag. Common metals smelted: Fe, Cu, Pb, Zn, Sn, Ni.

Uses & Applications

Iron and steel production (blast furnace). Copper smelting. Lead smelting. Zinc production. Tin extraction. Precious metal recovery. Historical: bronze age metallurgy (Cu + Sn). Reprocessing metal scrap.

Safety Information

Extreme high temperature hazards — severe burns. Toxic fumes: CO (carbon monoxide), SO₂ from sulfide ores, metal oxide fumes. Lead and other heavy metal contamination (historical smelting sites). Molten metal splashes. Slag handling — high temperature, caustic. Requires comprehensive industrial safety program.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Smelting

Index All "S" terms

Synonyms Metal extraction, pyrometallurgy, ore reduction, metal smelting

Frequently Asked Questions

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.