Hydraulically-transportable, self-leveling mine backfilling material, used for filling underground rock salt caverns, contains residue from (quasi)dry flue gas desulfurization of coal-fired power station plus binder, salt and mixing water

摘要

Hydraulically-transportable, self-leveling backfilling-/mining material for filling underground caverns in rock salt, based on (a) binder, (b) rock salt and/or salt fines, (c) optionally fly ash from coal-fired power stations and (d) water and/or salt solution for mixing, also contains desulfurization residue from dry and/or quasi-dry flue gas desulfurization plant of coal-fired power stations.