HOME > NEWS > Product Knowledge >

What changes do the fluctuations of kiln current reflect in the rotary kiln?

Date:2019-10-22 16:31     writer:cement editor     Views:

The normal kiln current curve should be stable and change with the rotary kiln speed.If the feeding amount and kiln speed remain unchanged, and the curve rises or falls, it indicates that the working conditions of rotary kiln have changed and need to be adjusted.What changes do the fluctuations of kiln current reflect in the rotary kiln?
 

1. Kiln current curve is stable


The kiln current curve is stable, which indicates that the rotary kiln is running normally and the thermal system is stable.
 

2. Kiln current fluctuation frequency is fast but regular


It indicates that the liquid content in the rotary kiln is too much and the material viscosity is large. At this time, the temperature before the kiln should be reduced appropriately, the batching scheme should be adjusted, and the air volume of the cooling fan in the first few rooms of the grate cooler should be increased.Avoid forming loops in the kiln and "making snowman" with the cooling machine.


The current of rotary kiln
 

3. The kiln current curve fluctuates up and down


If the feeding amount and kiln speed remain unchanged, it indicates that the condition of the rotary kiln changes. If the curve shows a sudden rise and then a gradual decline, the "kiln skin" or "broken ring" phenomenon generally appears. It is necessary to reduce the kiln speed, reduce the material and coal, accelerate the stroke of the grate cooler in advance, and pay attention to the rotary kiln barrel.
 

4. The current curve drops suddenly


It is indicated that the measures of reducing kiln speed and reducing material should be taken in the collapse of preheater and decomposition furnace system.
 

5. The kiln current does not decrease after rising


(1) indicating the mechanical failure of the rotary kiln system, inform the patrol inspector to check carefully and deal with it timely;

(2) the temperature in the rotary kiln is too high, and the material is carried very high in the rotary kiln. In this case, the system fuel should be reduced or the feeding amount should be increased;

(3) if the "front ring" appears in the kiln and the material filling rate in the kiln is high, the feeding amount should be reduced appropriately and measures should be taken to burn the front ring

(4) if the clinker has poor granulation, the raw material composition should be changed to improve the granulation;

(5) rotary kiln kiln skin thin, then to shorten the flame, pressure short firing zone.


rotary kiln
 

6. Kiln current fluctuates little and decreases gradually


The results show that the temperature in the rotary kiln is decreasing, and it is necessary to decrease the speed of the kiln or increase the coal content of the kiln head.
 

7. Kiln current gradually increases


(1) indicates that the temperature in the kiln is developing towards a higher direction.If the original low, it indicates that the rotary kiln situation is tending to normal;If the original normal, this time should be taken to add or reduce fuel adjustment measures.

(2) it indicates that the rotary kiln begins to form a long front ring or thick kiln skin, and appropriate material reduction and measures should be taken to burn the ring.

(3) indicates that the amount of materials in the kiln increases.

Inquiry You can get the price list and we will contact you within one business day!

Contact us

Active lime is produced from limestone dolomite chalk and other minerals with high calcium carbonate content by the calcination process under the temperature of 1000-1100 ° C. There are various processes for the active lime production mainly

Whatsapp:+86 17372753906 Skype:0086-25-82232507 Tel:0086-25-82232507 E-mail: Add:The Tiansheng Building 20 Layer,Yunlongshan Road No.98,Jianye District,Nanjing, P.R.China
WhatsApp
E-mail
WeChat
0086-25-82232507