Fluidizing a lime-silica slag

C - Chemistry – Metallurgy – 21 – C

Patent

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C21C 7/076 (2006.01) C21B 3/06 (2006.01)

Patent

CA 1338254

A method of fluidizing a cold lime-silica slag covering a molten metal. An acid flux is prepared from a particulate admixture of sodium fluoroaluminate andsodium silicate. The flux is mixed with the cold slag forming a fluid slag having at least 1% by weight F- and at least 1% by weight Na2O. The treated slag has a reduced melting point allowing it to be mechanically skimmed from the molten metal and has a high sulfur capacity.

605614

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