Product Specifications
| Prod Model: |
can be customized |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Model: |
Can Be Customized |
| Color: |
as Your Request |
| Type: |
Sintering Furnace |
Product Description
Lime rotary kiln
A lime rotary kiln is a kiln used to produce quicklime by the calcination of limestone (calcium carbonate).
This reaction takes place at 900° C (at which temperature the partial pressure of CO2 is 1 atmosphere), but a temperature around 1000° C (at which temperature the partial pressure of CO2 is 3.8 atmospheres) is usually used to make the reaction proceed quickly. Excessive temperature is avoided because it produces unreactive, "dead-burned" lime.
Rotary kilns started to be used for lime manufacture at the start of the 20th century and now account for a large proportion of new installations. The early use of simple rotary kilns had the advantages that a much wider range of limestone size could be used, from fines upwards, and undesirable elements such as sulfur can be removed.
Our Lime Kiln features in, convenient and reliable control of the production process, less wearing parts, high rates of operation, The Lime kiln also has strong structure, stable operation, low energy consumption, high-quality products, large capability from the kiln and so on advantages, we can also offer advanced efficient shaft preheater, five grade cyclone preheater.
Technical features of lime kiln
Take the300t/d kiln as example. It can be regulated within 180t/d-300t/d range without influencing quality and consumption targets.
2. Chalk size: 400mm to 80 mm. Size range ratio is 1: 2
3. Kinds of fuel: Natural gas, oil, cola dust, coke oven gas, coal gas of low heat value and mixed fuel of all kinds of fuel(gas and gas, gas and liquid. Gas and solid, liquid and solid and so on).
4. Lime products: Fine lime and high activity(reaching 360ml, 4N HCl Ten minutes). The ratio of lime stone under-firing and over-baking is5-8%.
5. Low heat wastage: They can make full use of heat energy. When primary air passes. Fuel gas is preheated. When secondary air passes. Cooled lime is preheated. Fuel is burned cmpletely adn fuel heat is made full use of. Low heat rate is 800-900kal/kg
6. High work ratio: They can operate continuously for 48 to 50 weeks each year.
7. Calcination way: Use our new technolohy, three-way pressure system to reduce lime raw burned and burnt rate and raise lime activety.
Structure features and process instruction of lime kiln
1. The kiln body is rectangular or cylindrical. There are double-deck burner girders in the kiln body with periphery burners in the middle kiln body. Waste gas drawing-out girder is set on the kiln top. The kiln is divded into five parts: Material storage zone, preheated zone, calcining zone, posterior calcining zone, cooling zone.
The part between the kiln gas drawing-out device and the crown is the storage zone. It is used for storing adequate lime stone in order not to stop producing when the crown feed device needs short-term maintenance
The part between the kiln gas drawing-out device and the upper burner gireder is the peheating zone to preheat lime stone
The part between the upper burner girder and the lower girder the calcining zone where lime stone is calcined into fine lime. Its height can be regulated according to requirement of quality or lime stone physical property
The part between the lower burner girder and lower gas drawing-out girder is the posterior calcining zone. The lime that was calcined will gain the even and refine quality and raise the activity, when through this zone that has the high temperature and no pressure.
The part between the lower berner and the lime output is cooling zone, cooling air comes into the kiln from the bottom cools lime stone to 75c and comes out of the kiln. Heated secondary air comes into calcining zone to help burn. Lime rotary kiln.
Zhengzhou Taida Mining and Metallurgy Equipment Co., Ltd is an import&export joint-stock enterprise, producing mainly drying, mining, metallurgy and construction materials equipment and forming R&D, production and sales into an integral system. The headquater of the company is located in Hi-tech Development Zone, Zhengzhou, covering an area of 20, 000 square meters. It has three branch companies and a R&D department, owning RMB 50 million in fixed assets, more than 500 employees, and an annual output of over 500 sets of complete machines and the production capacity of more than 10, 000 tons accessories. With the introduction of technology, craftsmanship and testing base which are advanced both at home and abroad.
We provide five kinds of products: Energy-saving dryers, Heating Equipments, Mineral dressing products, Sand making products, Normal atmosphere gasifiers. Main products include: Rotary dryer, Rotary Drum Agglomerator / Granulator, Chicken manure dryer, Muddy Material dryer, Coal Slime dryer, mesh-belt dryer, Cereal tower dryer, Rotary kiln, Vertical mechanized kiln, Sand dryer, and other industry dryers, drying machine, gasifier, furnace and every kind of crusher or mill and so on.
Taida company advances with the time, brings forth and innovates new thoughts, makes good advantage of technology and personnels, and focuses on technology development as well as products renovation. Since we adopt the internal control standard which is superior to national machinery industry standard and carry out the three-level self-inspection quality managing accountability system strictly, all of our products have got acceptance for several consecutive years in the annual national inspectation of mining machinery. Each year we are granted by the province government"star enterprise" and "advanced unit"as well as the honour of "faith-keeping and law-following enterprise".
