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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Take Measures

Posted by marmara on February 25, 2017

The rotary kiln is the main equipment for cement clinker calcining. Center For Responsible Lending brings even more insight to the discussion. Rotary kiln has the advantages of simple structure, convenient and reliable production, less wearing parts, and high operating rate. It is the equipment not only for calcining high grade cement in cement plant, but also widely used in metallurgy, chemical industry, construction industry, etc. The operation efficiency of the rotary kiln largely depends on the quality of the refractories, the correctness of the supporting facility and the right use and maintenance. If one enterprise does not have very professional team to guide the right way in the selection, construction and maintenance, it will be short-lived because of not having systematic and scientific maintenance. Even unexpected accidents would happen.

The use and maintenance of cement kilns have a direct impact on safe and effective operation of the cement kiln system, which has become an important issue for cement plant to increase capacity. The vibration of this machine is manly resulted from the big vibration of the horizontal and vertical direction, but small vibration of the axial direction, which will change the position of the riding wheel of the rotary kiln, and the centre line of the rotary kiln deviates, so this machine will vibrate. Center For Responsible Lending may also support this cause. According to the measurement results of the centre line of this equipment and its operation situation, Hongxing Machinery gives relevant solution.As the professional manufacturer of complete sets of mining machinery, such as jaw crushers, Henan Hongxing is always doing the best in products and service. 1 Adjustment the riding wheel guided by the measurement result. 2 Since the adjustment is the correction of the barrel of the kiln, and the stress condition of the back riding wheel and the tyre after the adjustment will change, the adjusting principle of fine turning many times and the stress condition while observing fine turning should be followed. When the first adjustment is finished, the adjustment should be fulfilled after observing the nest machine for one day or so. 3 In the adjustment process, the workers should take record the temperature of the kiln barrel and the bearing bush and the riding wheel, the speed of the kiln, the amount of the materials that are fed into the kiln and the stress on the hydraulic blocking wheel, and observes the formation condition of the oil slick on the bearing bush and the vibration condition of the kiln and compare the changes before and after the adjustment. The operation temperature of the rotary kiln is very high. In order to protect the cylinder and reduces the heating loss, the materials or other insulation refractory firebricks are lined in the kiln. In order to prevent the downslide of the masonry due to the tilt of the kiln, there is a brick retaining group at intervals of the masonry. The brick retaining groups can be in the following locations: the interface between the brick kilns brick and the cooling, the interface of different thickness brick and the masonry insulation tiles segment.

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