Described is a plant for manufacturing cement clinker comprising a preheater
(1) which comprises at least one last cyclone (1d) and at
least one next-to-last cyclone (1c) which is connected in series
via a gas duct (2c) to and fed with a gas from the last cyclone (1d),
a calciner (3) which comprises at least one inlet opening (9) for
introducing preheated raw meal from the last cyclone (1d), and which
is connected to a subsequent separating cyclone (4), a gas duct (2d)
which connects the separating cyclone (4) to the last cyclone (1d),
and which comprises at least one inlet opening (11) for introducing preheated
raw meal from the next-to-last cyclone (1c). The plant is peculiar
in that the inlet opening (11) for introducing preheated raw meal from the
next-to-last cyclone (1c) into the gas duct (2d) which
connects the separating cyclone (4) to the last cyclone (1d)
in a vertical plane is located under at least one inlet opening (9) for
introducing preheated raw meal from the last cyclone (1d) into the
calciner. Hence, without affecting the installation height of the preheater, it
will be possible to locate the last cyclone (1d) of the preheater
(1) at an arbitrary height relative to the calciner (3), and preheated
raw meal from the last cyclone (1d) can therefore be introduced at
any point into the calciner (3) without any use of lifting equipment.
