Patent ID: 6257877
Filing Date: 2001-07-10
Classification: C04B

Abstract:
A kiln plant for manufacturing cement, said plant comprising a kiln, a cooler, a calciner with subsequent separation cyclone, a burning compartment provided at its upper part with a central burner, and featuring below the burner an tangential inlet through which hot gas is fed, via a duct, from the cooler to the burning compartment, said duct being provided with an inlet for raw meal, the lower part of the burning compartment being provided with a connection to the calciner, and a second connection directing the exhaust gases from the kiln to the calciner, characterised in that the height, h.sub.1 -h.sub.2, of the upper part of the inner volume of the burning compartment, between the tip of the burner and the upper edge of the tangential inlet, being the uppermost point of entry of hot gas from the cooler is at least 1/3D, where D represents the diameter a cylinder would have if said cylinder had the height h.sub.1 -h.sub.2 and the same volume as the upper part of the inner volume of the burning compartment; and in that the height of the lower part of the inner volume of the burning compartment, h.sub.3 -h.sub.4, being situated between the lower edge of the tangential inlet, being the lowermost point of entry of hot gas from the cooler, and the outlet from the burning compartment, is at least D.