초록 ▼

A cement clinker is produced by utilizing a combustible waste material as a fuel for preheating or calcining a cement material, by using an apparatus comprising a cement material feeder, a preheater or calcinator, a rotary kiln, cooler and means for flowing an exhaust gas from the rotary kiln to the

A cement clinker is produced by utilizing a combustible waste material as a fuel for preheating or calcining a cement material, by using an apparatus comprising a cement material feeder, a preheater or calcinator, a rotary kiln, cooler and means for flowing an exhaust gas from the rotary kiln to the preheater or calcinator, which apparatus is characterized by a heat-decomposer which is located between the preheater or calcinator and the rotary kiln and in which a combustible material is heat decomposed with an exhaust gas from the rotary kiln and the resultant combustible gas is burnt in the preheater or calcinator.

대표청구항 ▼

An improved method for continuously producing a cement clinker, comprising the steps of: feeding a cement material into a preheating or calcining region; preheating or calcining said fed cement material in a predetermined temperature range; forwarding said preheated or calcined cement material into

An improved method for continuously producing a cement clinker, comprising the steps of: feeding a cement material into a preheating or calcining region; preheating or calcining said fed cement material in a predetermined temperature range; forwarding said preheated or calcined cement material into a heating region; heating said preheated or calcined cement material at a predetermined temperature to convert said cement material to a cement clinker; moving said cement clinker into a cooling region; cooling said cement clinker with cooling air to a decreased temperature, and; flowing an exhaust gas from said heating region through said preheating or calcining region, which method is characterized by the steps of: feeding a combustible material into a heat-decomposing region located betwen said heating region and said preheating or calcining region; introducing at least a portion of said exhaust gas from said heating region into said heat-decomposing region to heat-decompose said combustible material and to generate a combustible gas therefrom; introducing said combustible gas from said heat-decomposing region into said preheating or calcining region, and; burning said combustible gas in said preheating or calcining region to preheat or calcine said cement material.