C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
C04B20/02—Treatment
C04B20/04—Heat treatment
C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
Procede de desodorisation d'effluents gazeux par oxydation thermique dans un generateur a pre-pyrolyse et a recuperation de chaleur, et generateur pour la mise en oeuvre de ce procede