Apparatus for continuously producing a cement clinker

Claim 1

An improved apparatus for continuously producing a cement clinker, comprising: means for feeding a cement material; means for preheating or calcining said cement material, which means is located downstream from said feeding means and is provided with a preheating or calcining chamber therein; a rotary kiln for converting said cement material to a cement clinker, which kiln is located downstream from said preheating or calcining means, said kiln comprising a heating chamber connected to said preheating or calcining means; means for cooling said cement clinker with air, which means is located downstream from said rotary kiln and comprises a cooling chamber connected to said heating chamber and air-blowing means connected to a lower portion of said cooling chamber, and; means for flowing an exhaust gas from said heating chamber through said preheating or calcining chamber, which apparatus is characterized by means for heat-decomposing a combustible material, which means is located between said preheating or calcining means and said rotary kiln and which means is provided with a heat-decomposing chamber which is connected to means for feeding said combustible material so that said combustible material is allowed to be fed into said heat-decomposing chamber, which heat-decomposing chamber is connected to said heating chamber in said rotary kiln in such a manner that at least a portion of the exhaust gas from said heating chamber is allowed to flow into said heat-decomposing chamber and a solid residue produced from said combustible material in said heat-decomposing chamber is allowed to be introduced into said heating chamber, and which heat-decomposing chamber is connected to said pre-heating or calcining chamber so that a combustible gas generated from said combustible material in said heat-decomposing chamber is allowed to flow into said preheating or calcining chamber.