VERFAHREN UND VORRICHTUNG ZUR GLEICHZEITIGEN HERSTELLUNG VON GROBKERAMISCHEN ERZEUGNISSEN UND BRENNGAS

The invention relates to a process and the associated apparatus for the utilisation (valorisation) of mixtures of combustible organic substances and clay or carboniferous clay by recovery of a tar-free CO-containing and H2-containing combustion gas and coarse ceramic products (building ceramics) or components. For this purpose, the mixtures shaped into green bodies are subjected in a chamber (1) to heat treatment in a steam-containing reducing atmosphere by direct contact with a steam-containing circulating gas which is circulated and heated before this contact in a circulating gas heater (15, 23). In this heat treatment, there takes place at temperatures of up to 200@C the drying of the green bodies, at temperatures of 200-700@C the pyrolysis of the organic substance and a ceramic consolidation of the green bodies, at temperatures of 700-900@C the gasification of the carbon formed during pyrolysis, a further ceramic consolidation of the green bodies and a leach-proof binding-in of environmentally significant heavy metals which can be completed at temperatures above 900@C.