Many people don't know how to accurately feed the rotary furnace. Today, let me give you a science popularization. In the operation of the rotary furnace, in addition to controlling the temperature inside the furnace, the amount of feed also has a significant impact on the stability of the kiln operation and production quality. Therefore, the correct method should be mastered when feeding.
First, after the preparation work for feeding the rotary furnace is completed, the initial feeding can be carried out.
The quantity is set at around 1/3 of the normal production value. After the material enters the preheater, increase the speed of the high-temperature fan to maintain the negative pressure of the kiln head cover at around 50Pa and the negative pressure of the kiln tail at around 300Pa. Then, gradually add coal to the decomposition furnace to over 1/3 of the normal opening, and gradually adjust the opening of the third air damper to 80% of the normal opening. The kiln speed is also gradually increased to around 2/3 of the normal opening. During this process, attention should be paid to the coordination of air and coal materials, The temperature of the C5 discharge pipe cannot exceed 900 ℃. When the outlet temperature of C1 is lower than the normal temperature+50 ℃, the ignition chimney cap can be closed 2. The rotary furnace is prone to malfunctions after about half an hour of feeding. At this time, more attention should be paid to the temperature and pressure of the preheaters at all levels. If any errors are found during operation, timely confirmation and handling should be carried out. At the same time, the opening of each fan of the grate cooler and the grate speed of each section of the grate bed should be adjusted according to the clinker discharge situation 3. After about half an hour of feeding, the system gradually enters a stable state (when the temperature of the decomposition furnace and kiln tail is stable, and the kiln current is stable and showing an upward trend, the production operation can be started), and the feeding amount can be gradually increased. Before increasing the feeding amount, the system air flow, coal feeding amount, and kiln speed should be increased. Before the feeding amount reaches 80% of the normal level, it can be increased by 5-10% of the normal amount each time, Faster production rate can be controlled with temperature control. After the temperature of the second and third air stabilizes to normal temperature, gradually increase the feeding amount (at a rate of 3-5% each time, of course, the mixing of air and coal materials must be achieved) to the normal value When the rotary furnace is fed too much or too little, it will affect its normal operation stability. Therefore, it is necessary to understand the relevant instructions in advance and master the correct feeding methods and skills when operating the kiln
