Plant for the thermal treatment of flour-like raw materials

摘要

In order to create a calciner upstream of the rotary kiln (10) and equipped with a second burner for cement clinker production lines. B. entire old tires can be disposed of by pyrolysis or combustion, it is proposed according to the invention below the merging (17) of rotary kiln exhaust gas duct (11) and tertiary air duct (16) across the tertiary air duct (16) a grate (18) for receiving the large-sized substitute fuels ( 19) to be arranged, which are introduced onto the grate (18) on one side of the tertiary air duct, the smoldering or combustion residues collecting on the grate (18) on the opposite grate side via an outwardly closed transverse duct (27) into the Rotary kiln exhaust gas duct (11) are discharged or thrown off.