Filling cavities in mining

Details Filling cavities in mining Filling cavities in mining

E - Fixed Constructions

02

D

31/14, 61/48

E02D 3/12 (2006.01) C04B 28/14 (2006.01) E21F 15/00 (2006.01)

Patent

CA 1328564

- 11 - Abstract of the Disclosure: Cavities in mining are fil- led by introducing a mixture consisting of a slurry or sludge which evolves CO2, foams and solidifies and predominantly comprises alpha-hemihydrate, alpha-CaSO4 . 0.5 H2O, an alkali metal or alkaline earth metal carbonate and water, by a method in which the mixture is mixed with a bisulfate-containing aqueous solution or suspension of one or more metals before being introduced into the cavities to be filled.

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