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Active lime production line

Luoyang Building Materials& architectural design research institute base on the foundation of imported technologies, absorbing others successful experience from domestic and abroad, through a series of experimental research work, we successfully complete the systemic development and research work of preheater and precalciner with independent intellectual property rights, finally we got the ability to provide a series of equipment of 600 ~ 8000 T/D cement clinker production. Our preheating& precalciner system has a series of unique technical characteristics, such as low resistance, high decomposed rate, high fuel adaptability, good anti clogging performance, high operational flexibility and reliable production.
01

Process description

Qualified limestone (20 ~ 50 mm) are lifted by bucket elevator to top silo of preheater. There are two level indicators (up and down) controlling the feeding amount, then they are separated averagely into preheaters’ individual rooms. The limestone’s temperature rises to about 900℃ heated by kiln flue gas of 1150℃, about 30% of them are decomposed, and they come into the rotary kiln by hydraulic rod, where the limestone decomposed into CaO and CO2. The decomposed limestone are put into the cooler, where its temperatures drops to 100℃ and released. The hot air (600°C) will come to kiln after heat exchange, and mix with coal gas for mixture combustion. The exhaust gas is released by the blower into bag deduster through multi-pipe cooler, then into the chimney though exhaust blower. The limestone from the cooler will be transported to the limestone final product silo through vibrating feeder, chain conveyer, bucket elevator, belt conveyer.
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02

Specifications

Technical parameter see below table:
Cpacity(t/d) 150 200 250 300 400 500 600 800 1000 1200
Product

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Active 

lime

Preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Polygon 

vertical 

preheater

Rotary 

kiln

Size(m) Φ2.5*40 Φ2.5*40 Φ3*46 Φ3.2*54 Φ3.4*54 Φ4*52 Φ4*60 Φ4.5*64 Φ4.9*70 Φ5.2*72

Firing 

temperature

()

1350 1350 1350 1350 1350 1350 1350 1350 1350 1350
Inclination(%) 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5
Support roller 3 3.5 3.5 3.5 3.5 2 2 2 2 2
Thrust roller Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic Hydraulic
Cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Square 

vertical 

cooler

Fuel Gas Gas Gas Gas Gas Gas Gas Gas Gas Gas

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Coal 

powder

Heat consumption

(Kj/Kg)

4100 4100 4100 4100 4100 4100 4100 4100 4100 4100
03

Features

1. Large production, maximum capacity can reach 1500t/d 2. Quality of final product is well-distributed, and over-sintering is no more than 8%. 3. Activity of lime can reach 400ml Main structure of rotary kiln 1.Body 2.Riding wheel 3.Gear ring 4.Tire 5.Transmission device Main structure of vertical cooler: 1.Grate bar and discharge device for big block 2.Cooling chamber lower the cooler 3.Support Device Main structure of vertical preheater: 1.Upper feeding system: upper material bin, feeding chute 2.Preheater body: preheater chamber, suspension device 3.Stacker device: stacker part, frame, connecting rod 4.Hydraulic system
04

Projects

Luoyang Building materials & Architectural Design and Research Institute (LCDRI) Active lime production line
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©2018 Copyright Luoyang cement building design & Research Institute Co., Ltd. cement engineering design, waste heat power generation, kiln coal to gas, cement production, production transformation, active lime Suspension Calcination, oil shale retorting and comprehensive utilization

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