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Anthracite Carbon For Slag Foaming

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  • Anthracite is used as a foaming agent to create a slag layer on top of the molten steel. This slag layer performs several vital functions:
    • Protects the furnace lining from the high temperatures of the molten steel.
    • Improves heat transfer from the electric arc to the steel.
    • Absorbs impurities from the steel, leading to cleaner steel production.
  • This phase involves anthracite injection through a lance into the furnace. The volatile matter in the coal burns rapidly, creating a foamy slag layer.
  • The foaming process typically takes place during the refining stage of steelmaking.
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