refractory castable for rotary kiln

 

►Rotary Kiln Introduction:

Rotary kiln refers to rotating calcination kiln, belongs to construction material equipment. According to the different materials, the kiln can be divided into cement kiln, metallurgy chemical kiln and lime kiln. The cement kiln is mainly used for the calcinations of cement clinker, and it has two types of dry and wet methods. And the metallurgy chemical kiln is mainly applied in metallurgy industries, like, magnetizing roast of the poor iron ore in ironworks, oxidizing roast of the chromium and nickel ore, roast of the high aluminum bauxite in refractory material industry, roast of clinker and aluminum hydroxide in aluminum manufacturer, and roast of the chromium ore and chromium powder in chemical industry. The lime kiln is mainly used for roasting the active lime and light roasting of the dolomite in ironworks and ferroalloy works.

■ Technical Data

 

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  The cement rotary kiln is adapted to the need of the industry developed a new type of cement rotary kiln calcining equipment, the measurement principle of cement rotary kiln kiln method: laser measurement, laser is a good monochromaticity, concentrated energy, small beam divergence angle of light. cement rotary kiln laser technology, has been applied in the industrial sector. Use of cement rotary kiln the laser beam can be easily carried out a variety of work. Laser measurement of cement rotary kiln and the theodolite method compared with cement rotary kiln, clear and intuitive method is simple, accurate, reliable, due to the reduction of a series of measurements and conversion process, laser measurement with high accuracy and more convenient for cement rotary kiln.

   

  Determination method for cement rotary kiln, installation of a new cement rotary kiln and the transformation of the old cement rotary kiln cement rotary kiln, when no heat exchange device, using a cement rotary kiln inner fixing method is more convenient. Specific steps: Determination of cement rotary kiln sites located in a frame; the determination of position of the center of cement rotary kiln cement rotary kiln method; determine the baseline; find is comparing laser beam into a turning plate coordinate paper facula center circle and the origin of the relative position is known, the size of the deviation. Then by adjusting the bolt, nail wire link or adjusting the supporting wheel, when the spot with the cement rotary kiln cylinder center coincide. cement rotary kiln tracking method can ensure the straightness of cement rotary kiln, cement rotary kiln determination outside except for aligning the axes of the cement rotary kiln cylinder, also can understand idler wheel axis. Also need to measure each roller, roller diameter and the profile of roller and pad clearance, and after accounting.

   

   

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  Cement Rotary Kiln Temperature Control Strategy

   

  The current cement rotary kiln calcining is pellets sintering process is the most important stage, so the cement rotary kiln temperature control becomes the key factor. The cement rotary kiln attentive in large time delay, nonlinear, time-varying and other technological features, using the cement rotary kiln temperature adaptive fuzzy PID-Smith compound control strategy, and according to the cement rotary kiln heat balance analysis results and Smith predictor features for relay identification method, identification of different cement rotary kiln temperature temperature control model, in order to discrete way of approximating actual system model of continuous change, eventually reducing cement rotary kiln model mismatch caused by the prediction compensation error.

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Main Technical Parameters of Rotary Kiln:

 

Spec.(m)			Φ2.8/2.5×*4	Φ3.2×*0	Φ3.5×*4	Φ4×*0	Φ4.3×*4	Φ4.8×*4	Φ5.6×*7	Φ6.0×*5
Capacity（t/d）			**0	***0	********0	***0	***0	***0	***0	****0
Slope of the  kiln shell (%)			3.5	3.5	4	4	4	4	4	4
Support Qty			3	3	3	3	3	3	3	3
Type of thrust roller			Mechanical	Mechanical	Mechanical	Hydraulic	Hydraulic	Hydraulic	Hydraulic	Hydraulic
Rotating speed of kiln		Main driving  (r/min)	0.****2.*2	0.***3.*7	0.***3.9	0.***4.*7	0.**4.0	0.***4	Max4.*3	Max5
		Auxiliary  driving (r/min)	4.*5	6.5	7.*6	8.2	7.*3	8.*2	8.7	9.2
Main driving	Electrical motor	Model	ZSN*******1	ZSN********1B	ZSN********2	ZSN********2	ZSN*******2	ZSN********2	ZSN*******2	ZSN********2
		Rated  power (kw)	*5	**0	**0	**5	**0	**0	**0	**0×2
		Speed  regulation range  (r/min)	～***0	***0	***0	***0	*******0	***0	**0～***0	**0～***0
		Rated  power (v)	**0	**0	**0	**0	**0	**0	**0	**0
	Reducer	Model	ZS*****-I	ZSY*******-V	NZS*****8VIBL	YNS******2.4VBR	YNS******1.5VIBL	JH**0C-SW*****0	JH**0C-SW*****5	JH**0C-SW*****8
		Total ratio	****3	*0	*8	*2.4	*1.5
Auxiliary driving	Electrical motor	Type	Y**2M*4	Y**0M*4B	Y**0L**6