Active lime assembly line

    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.

Main Technical Parameters:

Design Capacity（t/d）		150	300	600
Product		Active Lime	Active Lime	Active Lime
Pre-heater		Vertical Pre-heater	Vertical Pre-heater	Vertical Pre-heater
Rotary Kiln	Size(m)	Φ2.5×40	Φ3.3×50	Φ4×60
	Effective Volume(m3)	142	292	575
	Burning temperature	≤1250	≤1250	≤1250
Cooler		Grate Cooler	Grate Cooler	Grate Cooler
Fuel		Gas Coal Dust	Gas Coal Dust	Gas Coal Dust
Heat Consumption （kJ/kg Cao）		5000-5300	5000-5300	5100

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