OVEN FOR CALCINATION OF RAW MATERIALS CONTAINING CARBONATES AND PROCESS FOR CONVERTING AN EXISTING OVEN

摘要

P In order to ensure a uniform calcination of the raw material 9, the interior space 19 of the furnace is delimited by a refractory masonry structure 12 which extends over the lower part 1 of the tank and over the part of the 'outer shell which is widened in section relative to the lower part 1. The structure 12 defines a uniform internal section over its entire height. In the region of the enlarged sectional section of the outer casing 11, the masonry structure 12 is supported on this casing by means of supports 14, 15, 16 disposed between the structure 12 and the casing 11. In in this region, burner lances 20 project into the interior space 19 of the oven. /P