F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 15/08 (2006.01) B65G 69/04 (2006.01) C21B 13/00 (2006.01) C22B 1/10 (2006.01) F27D 3/00 (2006.01)
Patent
CA 2430436
According to the method, granular ore or ore concentrate is introduced into a kiln (1) for roasting the ore at temperatures of 400 to 1050 ~C, whereby the ore in the kiln forms a stationary fluidised bed (3). The ore is projected onto the fluidised bed through an opening (16) in the kiln housing located above said fluidised bed, the ore being accelerated by the blades (14a) of a rotating projection wheel. Said projection wheel (14) lies outside the kiln in the vicinity of the housing opening. Preferably, the speed of the projection wheel is variable and the projection wheel can be displaced and/or pivoted in relation to the kiln.
L'invention concerne un procédé pour introduire un concentré de minerai ou un minerai en grains dans un four (1) dans lequel le minerai est grillé à des températures comprises entre 400 et 1050 DEG C, le minerai dans le four formant un lit fluidisé stationnaire (3). Le minerai est projeté sur le lit fluidisé par une ouverture (16) ménagée dans le bâti du four au-dessus du lit fluidisé, ledit minerai étant entraîné par les pales (14a) d'une roue de projection rotative (14). Cette roue de projection se trouve à l'extérieur du four, à proximité de l'ouverture du bâti. La vitesse de rotation de la roue de projection est de préférence variable et la roue de projection est déplaçable et/ou orientable par rapport au four.
Stroder Michael
Vollmer Hubert
Zingrebe Horst
Outokumpu Oyj
Robic
LandOfFree
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