C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
C04B38/063—Preparing or treating the raw materials individually or as batches
Procede pour la preparation de masses legeres plastiques pour la transformation ulterieure en materiaux resistant au feu ou refractaires, leur procede de preparation et leur utilisation