50-1000tpd Capacity Lime Calcination Plant with Complete Production Machine

• Installation: Under Our Engineer′s Guide
• Testing: Sypply
• Certificate: ISO9001,ISO14000,CE
• Spare Parts: We Offer
• Design: Offered by Our Engineer
• Capacity: Customized
• Model NO.: 100-300tpd
• Type: Lime Plant
• Mining Object: Lime Plant
• Application: Lime Production Line
• Experience: More Than 50 Years
• Transport Package: Standard Export Packing
• Specification: ISO9001, ISO14000, CE
• Trademark: ZK
• Origin: Zhengzhou, Henan, China (Mainland)
• HS Code: 8417
• Production Capacity: 8 Set/Sets Per Month Negociation

Product Description

Active Lime  Calcination Plant/Active Lime Production Line

 

Description of Lime  Calcination Plant:
This active lime production line is a complete line that includes vertical preheater, rotary kiln, grate cooler, air treatment system, raw material conveyor system, finished product conveyor system, raw coal grinding system, and so on. DCS central control system is employed to make concentrated operation management.

 

Process Flow of  Lime  Calcination Plant:

1. Raw Material Conveying:
The 20-40mm limestone on the stock ground is sent to storage silo by the B1000 belt conveyor with large inclination. In the storage silo, qualified limestone with granularity more than 10mm will be sent to the gravel silo, while limestone with particle size less than 10mm will be conveyed to the powder silo.

2. Limestone Calcining:
The limestone calcining system is mainly made up of 10.5×8.5m vertical preheater, 4.0×60m rotary kiln and vertical coolder whose output is 600t/d and heat consumption of 5.75GJ/t. Limestone inside the preheater is heated by high-temperature gases from rotary kiln to 600-800°C, at which temperature limestone can be partly decomposed. Then the limestone will be sent by 12 hydraulic push rods to the kiln end, where it will undergo high-temperature calcination before sent to the vertical cooler. The processed limestone will be cooled down by cold air to 65°C. Air from the vertical cooler enters into the rotary kiln as the second air to take part in calcining process.

3. Finished Product Conveying:
The final lime will be sent to the storage bin for final products by NE500 bucket elevator. After screening, qualified lime whose particle size is more than 5mm will be sent to storage for active lime, while powder lime whose size is less than 5mm will be sent to storage bin for powder.

4. Gas Treating:
High-temperature gases from rotary kiln will do heat exchange with limestone inside the preheater, and after that, the temperature of these gases will reduce to lower 280°C. Then these gases will be cooled down by multi-tube cooler to 200°C lower. Finally, they enter into the bag filer before discharged into the atmosphere.

 

Production Process Introduction
Qualified limestone stored in silos will be lifted and transferred via bucket elevator into the hopper on the top of the preheater. In the hopper, feeding quantity is controlled by the upper material level meter and the lower material level meter. Then limestones are evenly distributed through the feed tube to the preheater's chambers. Limestones are heated by 1150 ° C flue gas to 900 ° C in the preheater, about 30% limestones decomposed. They are pushed into the rotary kiln by hydraulic push rod, sintered and decomposed into CaO and CO₂. After decomposition, the limestones enter the cooler where they are cooled to 100 ° C by cold air and then are discharged. After heat exchange, 600 ° C hot air goes into rotary kiln and is mixed with gas for combustion. Exhaust goes into the bag filter through the induced draft fan, and then goes into the chimney through the exhaust fan. Lime discharged from the cooler is transferred by vibration feeder, chain conveyor, bucket elevator, and belt conveyor into the finished product warehouse.

 
 

lime rotary kiln
specifications	yield	speed(rpm)	Bearing number(a)	reducer	Motor model	power
	(t/h)
Φ2.8x43m	8.3	0.62-1.5	3	host zs165-6	host YCT355-4B	75
				ssist zs50-1	ssist Y160L-6	11
Φ3.0x50m	9.4	0.5-1.5	3	host zs165-3	host ZSN4-280-11B	125
				ssist zl50-1	ssist Y160L-6	11
Φ3.2x50m	10.4	0.4-1.5	3	host zl130-16	host ZSN4-280-11B	125
				ssist zl50-10	ssist Y180L-4	22
Φ3.3x55m	12.5	0.92-2.74	3	host nzs995-45vbl	host ZSN-280-11B	125
				ssist ZL42.5-10.2	ssist Y160L-4	11
Φ3.6x55m	16.7	0.4-1.5	3	hostZYS500-40	hostZSN-315-072	250
				ssistZYS180-31.5	ssistY180L-4	22
Φ3.8x58m	20.8	0.4-1.5	3	hostZSY500-40	hostZSN-315-072	250
				ssistZL50-14	ssistY180L-4	22
Φ4.0x60m	25	0.4-1.5	3	hostZSY630-35.5	hostZSN4-355-092	315
				ssistZL65-16	ssistY200L-4	30
Φ4.3x60m	33.3	0.58-3.46	3	hostJH560C-SW-63-1/2	hostZSN4-280-11B	2x125
				ssistZL60-12-1/2	ssistY160L-6	2x11