Process for producing a hardened product of coal ash

Details Process for producing a hardened product of coal ash Process for producing a hardened product of coal ash

C - Chemistry, Metallurgy

04

B

261/80

C04B 7/28 (2006.01) C04B 18/06 (2006.01)

Patent

CA 1228375

13 ABSTRACT OF THE DISCLOSURE A hardened product of coal ash having strength sufficient as a civil engineering or construction material is obtained by treating coal ash with sulfuric acid and/or hydrochloric acid to obtain a first reaction mixture; treating the first reaction mixture with calcium carbonate to obtain a second reaction mixture; mixing the second reaction mixture with a hydraulic material and water to obtain a third reaction mixture; and shaping and curing the third reaction mixture.

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