Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for stepwise cooling cement clinker
The invention provides a method for stepwise cooling a cement clinker. The method is characterized by comprising steps of (1) first-stage quick cooling; (2) clinker crushing; and (3) second-stage conventional cooling. The cooling method comprises first-stage cooling and second-stage cooling, and the cooling volume of the two cooling stages can be controlled independently, so that the stability of the system is improved, and air mixing among air openings can be avoided; air entering a first-stage cooler is subjected to heat exchange to form high-temperature hot air which is completely used for supplying secondary and tertiary air for a system, wherein the average temperature after the secondary air and the tertiary air are mixed can be more than 1050 DEG C, so that the heat recovery efficiency of the cooler can be over 85 percent; a crushing step is executed before second-stage cooling, so that the contact area of the clinker and cooling air in a second-stage cooler can be increased, the air entering the second-stage cooler is only 0.6-0.8Nm<3>/kg.cl, and the air volume is remarkably reduced; furthermore, the temperature of formed hot air is remarkably increased, so that caloric content in the clinker is recycled as much as possible; and the total cooling air volume in the two cooling stages can be controlled under 1.5Nm<3>/kg.cl, and the total air volume is remarkably reduced.
Method for stepwise cooling cement clinker
The invention provides a method for stepwise cooling a cement clinker. The method is characterized by comprising steps of (1) first-stage quick cooling; (2) clinker crushing; and (3) second-stage conventional cooling. The cooling method comprises first-stage cooling and second-stage cooling, and the cooling volume of the two cooling stages can be controlled independently, so that the stability of the system is improved, and air mixing among air openings can be avoided; air entering a first-stage cooler is subjected to heat exchange to form high-temperature hot air which is completely used for supplying secondary and tertiary air for a system, wherein the average temperature after the secondary air and the tertiary air are mixed can be more than 1050 DEG C, so that the heat recovery efficiency of the cooler can be over 85 percent; a crushing step is executed before second-stage cooling, so that the contact area of the clinker and cooling air in a second-stage cooler can be increased, the air entering the second-stage cooler is only 0.6-0.8Nm<3>/kg.cl, and the air volume is remarkably reduced; furthermore, the temperature of formed hot air is remarkably increased, so that caloric content in the clinker is recycled as much as possible; and the total cooling air volume in the two cooling stages can be controlled under 1.5Nm<3>/kg.cl, and the total air volume is remarkably reduced.
Method for stepwise cooling cement clinker
TAO CONGXI (Autor:in) / DONG RUI (Autor:in) / LIANG QIAN (Autor:in) / XIANG DONGHU (Autor:in) / SUN YULONG (Autor:in) / DAI ZHONGYUAN (Autor:in) / CHEN HONGYAN (Autor:in) / CHEN XUEYONG (Autor:in)
22.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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