Decomposition Kiln

Posted by marmara on December 7, 2018

What is a decomposition kiln? what are the special features and application of decomposition kiln? Understand gradually some operating issues and skills focusing on the equipments features will contribute to the enhancement of the management level, and also helps the improvement of product quality and cost savings to directamente. There are many matters in this section, we only listed the following three aspects:? Narrow the calciner temperature control range calcined gypsum is the core part of the pre-kiln, there are about 60% of the fuel in the combustion, so the apparent decomposition rate can achieve to 85-95% in the rotary kiln. While controlling the optimum temperature, we also need to consider the CCO3 material decomposition rate and the temperature requirements of the fuel low-temperature combustion speed, under the premise that meeting the above two requirements, the temperature should be kept as low as possible in order to reduce heat loss, so the temperature range should be narrow, generally controlled in a range of plus or minus 20 degrees. Furnace plus the maximum amount of coal is limited Due to the wind range in the precalcining kiln, the aggregate amount of the air volume are narrow, and the moment of its kiln feed upper limit of the amount is limited by the amount, otherwise, the wind coal incomplete combustion will occur. The calciner instantaneous feed coal quantity is also affected by the constraints of the set temperature. Best hrs capacity and instant feeding amount are also limited in a narrow range only when the reasonable amount of ventilation is determined, the maximum fuel feed rate is also limited, and also defines the best station capacity and feeding amount. Therefore, when the amount of ventilation should be controlled within the reasonable limits, if the amount is large, whether how much fuel feeding are add, the oxygen is lacked, the heating capacity can not meet the needs of feeding amount increaser, the qualified products can not be obtained. But if the Feeding amount is less than the reasonable range, the low yield of clinker kg increase in the amount of exhaust gas, exhaust gas heat does not have enough raw material to absorb a barrel outlet temperature combustion gas furnace heat source equipment, such as the supply of fresh air increases after the exhaust heat away, so the yield is low, kg the clinker surface of dissipated heat increases, feeding amount is less than the reasonable range, there will result the consequences of low-yield, high heat consumption, thermal system instability, poor quality.

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