Method for treatment of asbestos-cement products and environmentally friendly use thereof

摘要

For the processing of asbestos cement materials, with heat to convert the asbestos components, the black material is coarse ground in an underpressure, and then further ground into an asbestos and cement powder. It is passed to the flame of a continuous furnace in a cement clinker prodn. line at a rate of 2-5% of the raw cement powder according to the type of combustion fuel, as a substitute for 2-5% of the raw cement mixture. With temps. of about 1800 deg.C., the asbestos cement material is thermally modified to form a component part of the cement clinker.