C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
39/33
C04B 2/10 (2006.01)
Patent
CA 1149608
ABSTRACT OF THE DISCLOSURE: For a production of hot gases, solid carbonaceous fuel is fed into the charging end of the rotary kiln. Oxygen- containing gases are blown through nozzle blocks into the charge disposed over nozzle blocks in the heating-up zone at and behind the point where ignitable particles of the solid fuel first appear. To decrease the heat requirement for the production of a highly reactive quicklime, oxygen- containing gases are blown through nozzle blocks into the charge disposed over nozzle blocks in that region of the heating-up zone which begins with the appearance of ignitable particles of the solid fuel and which ends where the tempera- ture in the charge does not rise further. In the succeeding calcining zone, oxygen-containing gases are blown through nozzle blocks into the charge disposed over nozzle blocks and at such rates that the temperature in the charge remains constant. Oxygen-containing gases are blown into the free kiln space where the kiln atmosphere contains combustible gaseous constituents. The rates of oxygen-containing gases blown into the free kiln space are so controlled that the exhaust gas is virtually free from combustible gaseous constituents.
374375
Lausch Herbert
Reuter Gerhard
Schnabel Wolfram
Metallgesellschaft Aktiengesellschaft
Robic Robic & Associes/associates
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