Method of making concrete from base metal smelter slag

Details Method of making concrete from base metal smelter slag Method of making concrete from base metal smelter slag

C - Chemistry, Metallurgy

04

B

C04B 7/19 (2006.01) C04B 5/06 (2006.01) C04B 7/147 (2006.01) C04B 18/14 (2006.01) C04B 28/02 (2006.01) C21B 3/04 (2006.01) C21B 3/06 (2006.01) C22B 7/04 (2006.01)

Patent

CA 2178672

A method of making concrete from base metal smelter slag produced by a nickel, copper, lead or zinc smelter, said slag containing by weight from about 15 to about 40% silica (SiO2), from abou 35 to about 60% iron oxide (Fe2O1), from about 2 to about 20% calcium oxide (CaO), from about 1 to about 5% of various other compounds such as MgO, Na2O, K2O, and trace amounts of metal such as Ni, Cu, Pb, Zn or Co, comprising grinding the slag to a size within the range of from about -250 to about 425 mesh to produce ground slag cement, mixing the ground slag cement with Type 3 high early strength Portland cement in a ratio of at least about 0.5:1 by weight, and adding sand and stone to produce a concrete.

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