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Advantage:, 1.high degree of mechanization, 2.simple control system, 3. production and easy operation, 4.highest capacity - details see: https://www.machineto.com/lime-kiln-limestone-kiln-rotary-lime-kiln-10076951

lime kiln/limestone kiln/rotary lime kiln

Calcium Carbonate (limestone) is put into the kiln at one end and heated at 900-1000 degrees Celsius to caused thermal decomposition. This reaction produces Calcium Oxide (quicklime) and carbon dioxide. The kiln is rotated so the limestone can move around and be heated thoroughly. Sometimes the kiln is set at an angle so the limestone can always be going in while quicklime can always be coming out.

The main component of Limestone is calcium carbonate , and lime is composed mostly of calcium oxide. The basic principle to produce lime is with high temperature, to decompose the calcium carbonate into calcium oxide and carbon dioxide.

Lime production process:
1. limestone crusher
Limestone broken is an important link in calcined lime production line, cement production line. Limestone crusher often generally selects hammer crusher, but the traditional hammer crusher has some shortcomings, our department of technology do a renovation, such as extend screen frame, mounting combat balance hammer, which greatly improves the service life of the crusher and crushing yield.
2. lime kiln/limestone kiln/rotary lime kiln

After crushing, qualified limestone is deposited in the storage bin, transported into the silos on top of preheater by the hoister. Preheater top bin has upper and lower material level meter controling feeding amount, and then material through the feeding tube to be uniformly distributed to each room of the limestone preheater.Limestone in the preheater is heated to 1150 degrees Celsius, kiln flue gas is heated to 900 degrees Celsius, approximately 30% of decomposition, and by the hydraulic push rod is pushed into the rotary kiln, limestone in a rotary kiln sintering, decomposited into calcium oxide and carbon dioxide. After decomposition, the genetated limestone into the cooler, by the cold air cooling to 100 degrees Celsius, then discharged. The heat exchanged hot air of 600 degrees Celsius into the kiln and mixing combustion with gas. Waste gas in the cold through the induced fan enter into the bag type dust remover, then by the exhaust fan into the chimney. Thel ime ,out of cooler, by vibrating feeder, bucket chain conveyor, bucket elevator, belt conveyor is deliveried into the lime product storeroom. According to customer requirements decide whether it needs screening process.

In the production of metallurgical lime, the main types of kiln are rotary kiln, vertical kiln, etc. In the world limestone rotary kiln is widely used, which has the following advantages:
first, the quality of lime by roasting kiln type is the best of all;
second, it can burn more than 5mm gravel materials, be helpful for mine resource utilization;
third, a high degree of mechanization, simple control system, production and easy operation;
Fourth, the highest capacity of single kiln .
Different kiln type has different preheating, calcining, cooling and discharging method. But a few technology principles are the same : the raw materials of high quality, good quality of lime; high calorific value of fuel, the quantity consumed less; and calcining time proportional to the particle size of limestone; quicklime activity inversely proportional to calcination time and calcination temperature.

The Rotary Kiln is thermal processing equipment for heating the bulk or slurry material and is used in various industries such as non-ferrous metallurgy, ferrous metallurgy, refractories, cement, environmental protection,chemical and paper industries.

lime kiln/limestone kiln/rotary lime kiln structure features:
The kiln is composed of the cylindrical shell ,kiln liner, cylinder accessories , sealing device at kiln outlet ,transmission device ,supporting device with thrust roller ,burner ,sealing device at kiln inlet , feeding device etc. The kiln shell is designed to keep some inclination to level .It is supported by the roller supporting device and equipped with thrust roller device to control the up and down moving of the shell .The driving system is equipped not only the main driving gear unit but also the auxiliary driving used to keep the shell rotating even when the main power is broken so as to prevent the shell from any bending and distortion .As the kiln head and tail are sealed by advanced technology ,the sealing of the kiln is fairly reliable.

lime kiln/limestone kiln/rotary lime kiln working principle:
Materials enter from the kiln outlet (the high end of the cylinder) into the kiln for calcination. Due to the tilt cylinder and slowly rotating, materials are not only rolling along the circumferential direction but also moving along the axial direction (from high to low), continuing to complete the process. Finally, the clinker enter into the cooler through kiln hood for cooling. Fuel is sprayed into the kiln through the kiln head, and exhaust gas produced by combustion exchanges with material, and then discharges from kiln outlet.

Technical parameters of lime kiln/limestone kiln/rotary lime kiln:

Specificttions (m)	Kiln demensions			Output (t/h)	Rotation speed (r/min)	Moto power (kw)	Weight (t)	Note
	Diameter (m)	Length (m)	Obliq-uity (%)
Ø1.4*33	1.4	33	3	0.9-1.3	0.39-3.96	18.5	47.5	----
Ø1.6*36	1.6	36	4	1.2-1.9	0.26-2.63	22	52	----
Ø1.8*45	1.8	45	4	1.9-2.4	0.16-1.62	30	78.2	----
Ø1.9*39	1.9	39	4	1.65-3	0.29-2.93	30	77.59	----
Ø2.0*40	2	40	3	2.5-4	0.23-2.26	37	119.1	----
Ø2.2*45	2.2	45	3.5	3.4-5.4	0.21-2.44	45	128.3	----
Ø2.5*40	2.5	40	3.5	9.0-10.5	0.44-2.44	55	149.61	----
Ø2.5*50	2.5	50	3	6.25-7.4	0.62-1.86	55	187.37	----
Ø2.5*54	2.5	54	3.5	6.9-8.5	0.48-1.45	55	196.29	----
Ø2.7*42	2.7	42	3.5	10.0-11.0	0.10-1.52	55	198.5	----
Ø2.8*44	2.8	44	3.5	12.5-13.5	0.437-2.18	55	201.58	Suspension preheating kiln
Ø3.0*45	3	45	3.5	12.8-14.5	0.5-2.47	75	210.94	----
Ø3.0*48	3	48	3.5	25.6-29.3	0.6-3.48	100	237	Outside disassemble kiln
Ø3.0*60	3	60	3.5	12.3-14.1	0.3-2	100	310	----
Ø3.2*50	3.2	50	4	40.5-42	0.6-3	125	278	Outside disassemble kiln

We focus on “fine workmanship, whole-hearted service”. lime kiln/limestone kiln/rotary lime kiln is core product of our company, relying on absorbing world leading processing technology, advanced management and quality control system, as well as our full efforts, our grinding mill products has earned high reputation among our customers. We provide the whole industrial lime kiln/limestone kiln/rotary lime kiln plant for customers.

Our products have been sold to more than 50 countries and areas of Southeast Asia, East Europe, South America, the Middle East and Africa etc, The accumulation of fruitful technology and the application of new technology have enabled the “GUDE” brand equipment to acquire over 30 awards from country and industry. Customer requirement serves as a kind of constant innovative power of our Gude people. Customer’s success serves as foundation of our success and our top pursuit, our products will extend to more foreign markets with its outstanding performance.
Service: Perfect after-sales service system and team with professional after-sales service has provided customers with prompt and thorough service. Understanding customers' needs and provide technical expertise and product know-how which are critical for selling successfully (technical support, services).