A method of making cement from base metal smelter slag

Details A method of making cement from base metal smelter slag A method of making cement from base metal smelter slag

C - Chemistry, Metallurgy

04

B

C04B 7/19 (2006.01) C04B 18/14 (2006.01)

Patent

CA 2273908

Cement is made from base metal smelter slag produced by a nickel, copper, lead or zinc smelter. The slag is ground to a size within the range of from about - 250 to about 425 mesh to produce ground slag cement, and the ground slag cement is mixed with Type 3 high early strength Portland cement in a ratio of a least about 0.5:1 by weight to produce a blended cement.

Cette invention se rapporte à un ciment qui est fabriqué à partir d'un laitier de fonderie de métaux de base produit par une fonderie de nickel, de cuivre, de plomb ou de zinc. Ce laitier est broyé en granulés d'une grosseur comprise entre -250 mesh environ et 425 mesh environ, pour former un ciment de laitier broyé, lequel est alors mélangé avec du ciment Portland à haute résistance initiale de type 3 selon un rapport d'au moins environ 0,5/1 en poids afin de former un ciment mixte.

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