Casting powder for the continuous casting of steel and...

Details Casting powder for the continuous casting of steel and... Casting powder for the continuous casting of steel and...

C - Chemistry, Metallurgy

21

C

22/188, 53/98

C21C 7/076 (2006.01) B22D 11/111 (2006.01)

Patent

CA 1146760

ABSTRACT OF THE DISCLOSURE A casting powder for the continuous casting of steel on the basis of silicate slags having the following chemical analysis: 25 - 45% by wt. of SiO2 20 - 45% by wt. of CaO 1 - 16% by wt. of Al2O3 0.1 - 15% by wt. of MgO 0.1 - 1.5% by wt. of FeO (20 - 45.1% by wt. of CaO+MgO) 0.05 - 10% by wt. of TiO2 3 - 15% by wt. of Na2O+K2O 0.05 - 10% by wt. of MnO 0 - 7% by wt. of B2O3 3 - 10% by wt. of bound F which may as well include impurities from the raw materials. The slag is premelted, foamed to a bulk weight of 0.5 to 1.4 kg/l, prcferably 0.8-1.2 kg/l,and coated superficially with a layer of 1.5 to 15% by weight, preferably 2 to 6%, of carbon black and/or graphite with the aid of an appropriate adhesive.

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