Specifications

Yuhong Lime Rotary Kiln:
1.Capacity :500TPD
2.Main Motor :125kw
3.Main Reducer: NSY56-28-II
4.Weight :278t

          Yuhong Active Lime Rotary Kiln /Rotary Lime Kiln Processing Project

 

[Yuhong Lime Kiln]  

 

A lime kiln is a kiln used to produce quicklime by the calcination of limestone (calcium carbonate). The chemical equation for this reaction is:

 

CaCO3 + heat → CaO + CO2 

Qualified limestone stores in silos and be shipped through the pre-heater by the elevator into the silos which is on the top of the pre-heater. The pre-heater on the top of silos is consisted of top and bottom level meter controllers which control the feeding capacity. Then through the feed tube the limestone is distributed to the indoor compartment of the pre-heater. 

The limestone in the pre-heater is heated to around 900 ° C by the kiln flue gas of 1150 ° C. At this time, about 30% of the limestone has been decomposition. Then the limestone is put into the rotary kiln by the hydraulic stem. In the rotary kiln the limestone sinters and decomposes into CaO and CO2. Then the decomposed limestone goes into the cooler and is cooled to about 100 ° C by the cold air and then is discharged. The 600 ° C hot air after heat exchange goes into the kiln and combusts with gas. The Exhaust gas blended with the cold wind go to the bag filter through the suction fan and then through the exhaust fan into the chimney. 

The limestone out of the cooler enters into the lime storehouse through the vibrating feeder, chain bucket conveyor, bucket elevator and belt conveyor. Whether to carry out screening and other procedures depends on customer requirements.

 

 

Capacity(t/d)		150	200	250	300	350	400	500	600	750	800		1000
Product		Active Lime Soft-burned Dolomite				Active Lime
Pre-heater		Circular Vertical Pre-heater								Shape Vertical Pre-heater
Rotary Kiln	Size(m)	Φ 2.5×40	Φ 2.8×42	Φ 3×46	Φ 3.2×50	Φ 3.5×54	Φ 3.6×5	Φ 3.8×58	Φ4×60/ Φ4.2×50	Φ 4.3×58		Φ 4.3×64	Φ 4.8×68
	Effective Volume (m3)	142	190	235	292	390	430	505	575/ 548	670		738	1005
	Burning Temp.	1250-1350				1350
Cooler		Circular Vertical Cooler					Square Vertical Cooler
Fuel		Gas/Coal Dust/ Oil etc.
Heat Consumption (kJ/kg Cao)		5300/5000				5225		5100		4810