Process for disposing of waste products inevitably formed downstream of coal-fired power stations and their utilisation with use of waste heat from the power station for production of preferably dam building materials for underground mining

摘要

The invention relates to a process for disposing of waste products inevitably formed downstream of coal-fired power stations and their utilisation with use of waste heat from the power station for production of dam building materials or the like for underground mining. This object is achieved by the waste products, that is filter ash and flue gas desulphurisation gypsum, being mixed with the wet and/or dried calcium chloride from the flue gas scrubber, and being used, preferably with further supply of binders, hardeners and cement to form underground dam building materials and/or backfilling materials or roadway consolidation materials and preferably removing from the flue gases the heat necessary for drying the CaSO4 product and for concentrating the calcium chloride from the scrubbing water by evaporation.