Juda kiln – 100 tons/day production process -EPC project

Short Description:

Lime is the main and main auxiliary material for steel production, calcium carbide production, refractory production, alumina production. Especially in the new era, new technology, new products continue to develop calcium materials are more and more widely used...

Product Detail


Product Tags

I. Significance of Developing New Modern Lime Kiln Technology

Lime is the main and main auxiliary material for steel production, calcium carbide production, refractory production, alumina production. Especially in the new era, new technology, new products continue to develop calcium materials are more and more widely used. Practice has proved that modern lime kiln technology is indeed a very realistic and shortcut benefit bright spot for iron and steel enterprises, calcium carbide enterprises, coking enterprises and so on. At present, the profit per ton of lime has far exceeded the profit of tons of steel, tons of iron, tons of calcium carbide, tons of coke. Enterprises that have applied modern lime kiln technology have been greatly benefited, and have achieved greater social benefits. However, many enterprises are restricted by traditional management consciousness and management level and have not developed modern lime kiln production technology still rely on soil kiln lime production. Therefore, if we want to thoroughly control the pollution of soil kiln, we must also rely on the implementation of modern lime kiln to solve the problem of demand.

The so-called modern new technology lime kiln is a more scientific calcining lime process with environmental protection, energy saving function, mechanization and automation. Because this process adopts modern calcination thermal technology, it can make full use of energy, especially the gas that pollutes the environment as energy source and turn waste into treasure. This not only protects the environment, but also produces good quality and low cost lime. Its direct and indirect benefits, economic and social benefits are very considerable. This is the significance of popularizing new technology lime kiln.

2. Types of modern lime kiln technology

There are mixed kilns by fuel, that is, solid fuel, coke, coke powder, coal and gas kiln. Gas kiln includes blast furnace gas, coke oven gas, calcium carbide tail gas, furnace gas, natural gas and so on. According to the shape of the kiln, there are shaft kiln, rotary kiln, sleeve kiln, Vimast kiln (West Germany), Melz kiln (Switzerland), Fucas kiln (Italy) and so on. At the same time, there are positive pressure operation kiln and negative pressure operation kiln. The modern mixed kiln with 800 cubic meters per day output below 500 and the modern gas kiln with 250 cubic meters, especially the energy saving and environmental protection lime kiln with blast furnace gas and coke oven gas combustion, have been developed and designed. The design and manufacture of “lime kiln long flame burner” has solved the burning problem of high calorific value and short flame of coke oven gas, which can make full use of the remaining coke oven gas. From the original coke oven gas “lighting “, polluting the environment into a valuable energy for enterprises to create benefits. For small and medium-sized iron and steel enterprises, coking enterprises, calcium carbide enterprises, and refractory industry are very good energy saving, environmental protection, efficiency and effective ways.


The main component of limestone is calcium carbonate, while the main component of lime is calcium oxide. The basic principle of burning lime is to decompose calcium carbonate in limestone into quicklime of calcium oxide and carbon dioxide with the help of high temperature. Its reaction formula is

CaCO2CaO CO2–42.5KcaI

Its process is that limestone and fuel are preheated in lime kilns (if gas fuel pipes and burners are fed) and decarbonized at 850 degrees, calcined at 1200 degrees, then cooled and unloaded out of the kiln. Its full calcination process is equivalent to being carried out in a sealed container. Different kiln shapes have different preheating, calcination, cooling and ash unloading methods. However, some process principles are the same: calcination temperature is 850-1200 degrees, preheating temperature is 100——850 degrees. The ash temperature is below 100 degrees. The raw material quality is high, the lime quality is good; the fuel calorific value is high, the quantity consumption is small; the limestone particle size is proportional to the calcination time; the quicklime activity degree is inversely proportional to the calcination time and the calcination temperature. 

  • Previous:
  • Next:

  • Leave Your Message

    Write your message here and send it to us

    Related products

    • Juda Kiln-Inner Mongolia 300T/D×3 environmentally friendly lime kiln production lines

      Juda Kiln-Inner Mongolia 300T/D×3 environmental...

      Technical parameters and performance table No. Contents Parameters 01 (24h)Capacity 100-150t、200-250t、300-350t 02 Occupied area  3000–6000sq.m 03 Total Height 40-55M 04 Effective Height 28-36M 05 Outer diameter 7.5-9M 06 Inner diameter 3.5-6.5M 07 Firing temperature 1100℃-1150℃ 08 Firing period Circulation 09 Fuel Anthracite, 2-4cm ,calorific value greater than 6800 kcal/kg 10  coal consumption 1...

    • Kiln Body Steel Assembly

      Kiln Body Steel Assembly

      7. kiln system Kiln main structure: furnace body shell for metal shell, built refractory brick. Kiln refractory material is: a layer of refractory brick     Red brick     A layer of aluminum silicate fiber felt slag  The production capacity is 100-300 tons of lime per day. The diameter of the kiln is 4.5-6.0 meters, the outer diameter is 6.5-8.5 meters, the effective height of the kiln is 28-36 meters, and the total height is 40-55 meters. The kiln type in insulation, Multi-layer insulation m...

    • Combustion Fan

      Combustion Fan

      11. Air supply system  Nowadays, most lime kilns only supply air at the bottom, which is not evenly distributed, and is prone to the phenomena of partial burning, core extraction, coking and edge refining. The high pressure wind produced by our special combustion fan rises to the calcining zone through the cooling zone at the bottom of the kiln. The cooling zone is actually a heat exchange zone. The temperature of lime drops sharply when the natural temperature rises with high temperature lim...

    • Stone Belt Conveyor

      Stone Belt Conveyor

      2. delivery system Belt conveyor, as a general equipment for sustainable transportation, is widely used in industrial production and is one of the common conveying equipment. The advantage of using underground belt cover to transport belt machine is that it greatly reduces the pollution of dust and noise, conforms to the requirements of national environmental protection policy, and is very beneficial to establish enterprise image and fulfill enterprise responsibility. Lime stone index require...

    • Two Stage Lock Air Valve

      Two Stage Lock Air Valve

      10. Air lock system Two-stage air-locking valve device: is one of the indispensable processes in the production of lime shaft kiln. The general ash removal equipment is to stop the air and exhaust ash, this equipment is to keep the air and seal the ash: in the process of ash removal, due to the rotation sealing of the two baffles, the combustion air will not leak from the lower part, which can effectively improve the quality and output of lime. structure of the equipment: the device is compos...

    • Furnace Grill Of The Kiln Body

      Furnace Grill Of The Kiln Body

      8. furnace mountain system The finished lime passes through the furnace frame under the action of gravity, the small particles fall directly on the dust hopper, the large particles stay outside the furnace mountain, protect the combustion pipeline, ensure the oxygen supply, can automatically control the discharge speed of the finished product in the furnace, and is of great help to the smooth surface, high yield and fuel combustion. If the size of limestone is uneven, the difference is too la...

    Leave Your Message

    Write your message here and send it to us