Procedure for the provision of a reactive cement component or cement additive

摘要

The invention concerns a process for the provision of a reactive cement component or cement additive, comprising at least the following steps:(a) the recovery of a coal-containing heap containing at least coal and clay-containing rock;(b) take at least calcined rock;(c) the production of fine-grained calcined rock;(d) the supply of fine grained calcined rock for use as a cement component or as a concrete additive.