|Place of Origin:||Henan, China (Mainland)|
|Minimum Order Quantity:||1|
|Delivery Time:||20 days and depends on ordering quantity|
|Payment Terms:||L/C, D/A, D/P, T/T, MoneyGram, Western Union|
|Brand Name:||HongJi||Power(W):||4-75 Kw|
|Certification:||ISO, BV, CE||Discharge Size(mm):||0.074-0.6|
|Qty Of Support:||3-6||Rev Speed(rpm):||0.58-2.85|
|Operation Training:||Provided||Type:||Cement Rotary Kiln|
lime kiln plant,
rotary calcining kiln
Active Equipment Rotary Kiln 100tpd Cement Production Line Lime Furnace Making Machinery Cement Rotary Kiln
Cement Kiln: Cement Rotary Kiln
HONGJI developed large new dry process cement rotary kiln product with cement research and design institutes in Tianjin, Nanjing and HONGJI by using domestic advanced technology, and the product can match 3000~10000t/d large new dry process cement production line. The company has a first rate rotary kiln development, research and design team, perfect test and inspection means and excellent large rotary kiln manufacturing equipment and manufacturing technology, and has formed a complete technology and production system integrating rotary kiln design, manufacture, install and debugging service.
HONGJI Cement Rotary Kiln technical characteristics:
♦ Kiln body is made of high quality composed of carbon steel or alloy steel plate and automatic welding;
♦ Tyre,Support Roller,Open gear adopts alloy cast steel;
♦ Sliding bearing with large gap not scraping tile bearing;
♦ Transmission device adopts hard tooth surface reducer, flexible diaphragm coupling, dc motor;
♦ Adopts hydraulic gear wheel;
♦ Preheater scales were used respectively to view of kiln head, and cylinder pressure tight seal;
♦ A slow drive device.
Cement Rotary Kiln
Application Industry:Cement Plant, Steel Mill, Chemical Plant & Incinerator
Cement Rotary Kiln Processes
With the arrival of rotary kilns, cement manufacturing processes became sharply defined according to the form in which the raw materials are fed to the kiln. Raw materials were either ground with addition of water, to form a slurry containing typically 30-45% water, or they were ground dry, to form a powder or "raw meal".
In the Wet Process, the kiln system is fed with liquid slurry, the water then being evaporated in the kiln.
In the Semi-Wet Process, raw material is prepared as a slurry, but a substantial proportion (50-80%) of the water is mechanically removed, usually by filtration, and the resulting "filter cake" is fed to the kiln system.
In the Dry Process, the kiln system is fed with dry raw meal powder.
In the Semi-Dry Process, a limited amount of water (10-15%) is added to dry raw meal so that it can be nodule, and the damp nodules are fed to the kiln system.
Wet process cement rotary kilns
The original rotary cement kilns were called 'wet process' kilns. In their basic form they were relatively simple compared with modern developments. The raw meal was supplied at ambient temperature in the form of a slurry.
A wet process kiln may be up to 200m long and 6m in diameter. It has to be long because a lot of water has to be evaporated and the process of heat transfer is not very efficient.
The slurry may contain about 40% water. This takes a lot of energy to evaporate and various developments of the wet process were aimed at reducing the water content of the raw meal. An example of this is the 'filter press' (imagine a musical accordion 10-20 meters long and several meters across) - such adaption were described as 'semi wet' processes.
The wet process has survived for over a century because many raw materials are suited to blending as a slurry. Also, for many years, it was technically difficult to get dry powders to blend adequately.
Quite a few wet process kilns are still in operation, usually now with higher tech bits bolted on. However, new cement kilns are of the 'dry process' type.
Dry process cement rotary kilns
In a modern works, the blended raw material enters the kiln via the before heater tower. Here, hot gases from the kiln, and probably the cooled clinker at the far end of the kiln, are used to heat the raw meal. As a result, the raw meal is already hot before it enters the kiln.
The dry process is much more thermally efficient than the wet process.
In addition to these distinctions, a further category has emerged in the last 40 years: before calcine Kilns, in which a proportion of the kiln fuel is burned in a static preheater before the feed enters the rotary kiln.
YZ1225 rotary kiln parameter for lime production line
|Type||Rotary kiln||Rotary kiln||Rotary kiln|
Contact Person: Mr. liu
Tel: 86 371 60256696