F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/34
F27B 19/02 (2006.01) C04B 7/44 (2006.01)
Patent
CA 1165113
ABSTRACT OF THE DISCLOSURE A method is disclosed for treating granular or pulverous raw material in a kiln plant including a preheater stage, a precalciner stage and a separator stage coupled to one another. Precalcined material is separated after the separator stage into a first and second material flow. The first material flow is suspended in spent cooling air and fed to a reaction zone zone for burning and melting the material therein. The melted material is fed to a cyclone for separating smoke gases therefrom and thereafter to a rotating nodulisation drum. The second material flow is also fed to the rotating nodulisation drum and mixed therein with the melted material so as to avoid any sticking and clogging of the melt. A kiln for practicing the method of the present invention is also disclosed. In prefered alternative embodiments, the reaction chamber can be either a shaft-like chamber or a cyclone burner.
389320
Osler Hoskin & Harcourt Llp
Smidth (f.l.) & Co. Of Canada Limited
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