CaCO3 rotary kiln for active lime plant

Specifications

CaCO3 rotary kiln for active lime plant
1,Advanced national technologies
2,Efficiency running rate
3,High production
4,Low h

CaCO3 rotary kiln for active lime plant ( Portland cement,the silicate cement according to the production standards of the People's Republic,the cement name of this engineering desigh), When completed, forming with an annual output of 200,000 tons of cement-scale enterprises.

  Production process
1  Raw materials, fuel storage
By limestone mining,the limestone is conveyed into the factory yard by dump truck.A PCD1612 Hammer Crusher is used to break limestone,aggregate is conveyed by discharge doobelt conveyerhoistthe roof belt machines into 2-φ10m×24m round limestone to be stored.

By limestone mining, the limestone is conveyed by the car into the 18 × 20m stack shelf for driedcrushed and then conveyed by belt conveyerS-type unloading car into 20×25×15m pre-homogenization reactor shelf.And limestone is set as a "T" on both sides of the corridor fabrics, forms a "people" shaped reactor materials.

Simple pre-homogenization operation used by loaders head face taking material ,the homogenization coefficient could reach 3-6.Loader takes materials and sends them to the belt conveyer, these are conveyed by hoist into φ6×14m round limestone to be stored.

Iron power is brought into the 18m×20m reactor shelf by the dumping of cars,and then it is conveyed by hoist into the 1-φ6m×14m iron storehouse to be stored.

Clay is brought into the 18m×20m reactor shelf by the dumping of cars, dried by the φ2.2m×16m dryer,and then it is sent into the φ6m×14m round storehouse to be stored.

Raw coal is brought into the 18m×40m raw coal reactor shelf by the dumping cara to be stored.

Gypsum is brought into the 15m×30m gypsum yard by the dumping of cars,after crushed it is sent to the1-φ6m×14m gypsum storehouse to be stored.

 

 

 

This series of rotary kiln is the large-size advanced international calcining kiln & furnace which is developed by

 

our company and many scientific research institutes such as Beijing General Reserch Institute of Mining &

 

Metallurgy, Changsha Research Institute Of Mining & Metallurgy, Suzhou Sinoma Reserch Institute of Non-

 

metallic Mining Industry, etc. Compared with the rotary kiln with the same specification made by the traditional

 

technology, this series of torary kiln can make the production capacity increase by 30%, make the heat

 

consumption reduce by 40% and make the discharged flue gas temperature<250 °C , so it is convenient for

 

collecting dust and meeting the modern environment protection needs about energy saving and consumption

 

reducing. This rotary kiln is widely used for extracting nickel from laterite,  calcining the activated limestone,

 

oxidized pellet, magnesium oxide, aluminum oxide, titanium dioxide, etc.

 

 

 

 

The structure chracteristic of ourcompany is:

 

1. The rotary kiln shell design fully take into consideration of the corner at shell flexible supporting to extend the lifetime of refractory bricks and castings.

 

2. Adopt supporing roller bearing with big diameter and small ratio between length and diameter to improve the reliability. The bearing is automatic self-sligning bearing.

 

3. The better sealing effect of new type open gear hood sealing type.

 

4. The spring lamination overlying type lexible sealing, double layer spring lamination sealing increase the heat insulation layer to improve the reliability and lifetime.

 

 

Parameters:

 

1 Specification: φ4.5×64m

 

2 Capacity: 4000t/d (lime)

 

3 Slope of the kiln shell: 4%

 

4 Rotating speed of kiln (main driving): 0.443-4.43r/min

 

                   (Auxiliary driving): 0.0712r/min (11.28r/h)

 

5 NO. of supporters: 3

 

6 Sealing type: sheet steel seal of kiln hood

 

7 Cooling type of kiln hood: air cooling

 

8 Driving type: Single driving

 

9 Type of thrust roller: hydraulic thrust roller

 

10 Cooling water consumption of each set of thrust roller: 2.5m³/h

 

11

Main driving	Electrical Motor( ZSN4-400-22 )	Rated power	Rated voltage	IP grade	Speed regulation range
		560kw	660v	IP44	100-1000r/min
	Reducer	Type		Total Ratio
		JH800C-SW305-31.5		I =40

 

 

 

 

12

Auxiliary Driving	Electrical motor	Model	Rated power	Speed	Rated voltage
		Y250M-4  B3	55kw	1470r/min	380v
	Reducer	Model		Ratio
		ZSY315-35.5-Ⅰ		I =45

 

13 Total weight (excluding kiln hood): 633 tons

 

             Weight of discharging kiln hood: 48 tons