China Lime Rotary Kiln Lime Processing Plant Active Lime Calcined Machinery

Lime Rotary Kiln/Lime Processing Plant/Active Lime Calcined Machinery
The rotary kiln produced has advanced structure. It can effectively improve preheating effect with its low resistance vertical preheater. After the material is preheated, the feeding decomposition rate can reach 20%-25%, thus can directly make use of 10-15mm fine fraction materials. The reliable airtight two-ends combination squama make the air leakage factor under 10%. The usage of compound refractory reduces radiation loss.Rotary kiln belongs to building material equipment, which can be divided into cement kiln,metallurgy chemical kiln and lime kiln according to different materials.
The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or "firing pipe") which acts like a large bunsen burner. The fuel for this may be gas, oil, pulverized petroleum coke or pulverized coal.

Limestone Rotary Kiln Process Description
Derui Rotary kiln cylinder composed of steel plate, cylinder body with build by laying bricks or stones of refractory lining, and horizontal line into slope, three belting leather in each block supporting device, in the material near the end belting leather across the inner cylinder with tangential spring plate fixed on a big gear ring, which is a small gear meshing. During normal operation, the main drive motor is transmitted to the open-type gear device by the main drive motor, which drives the rotary kiln.Materials are calcined from the end of the kiln. Due to the effect of tilting and slow rotation of the cylinder, the material is along the circumference of a circle and tumbling along the axial direction (from high to low) mobile, continue to complete the process, and generate the clinker kiln hood into the cooling machine cooling.The fuel is sprayed into the kiln by the kiln head, and the waste gas and materials produced in the furnace are exchanged for impact crusher, which is exported by the kiln tail.
The structure characteristic of rotary kiln
1. The rotary calcining kiln shell design fully take into consideration of the corner at shell flexible supporting to extend the lifetime of refractory bricks and castings.
2. Adopt supporting roller bearing with big diameter and small ratio between length and diameter to improve the reliability. The bearing is automatic self-sligning bearing.
3. The better sealing effect of new type open gear hood sealing type.
4. The spring lamination overlying type lexible sealing, double layer spring lamination sealing increase the heat insulation layer to improve the reliability and lifetime.
China Limestone Rotary Kiln Specifications

Model (m)Volume (m³)Output (t/d)Temperature ( ºC )Heat Consumption (kJ/kgCaCO3)Φ2.5 x 401421501350/12505300/5000Φ2.8 x 421902001350/12505300/5000Φ3 x 462352501350/12505300/5000Φ3.2 x 502923001350/12505300/5000Φ3.5 x 5439035013505225Φ3.6 x 5643040013505225Φ3.8 x 5850550013505100Φ4x60
Φ4.2x50575/54860013505100Φ4.3 x 5867075013504810Φ4.3 x 64738135013504810Φ4.8 x 681005100013504810
Rotary Kiln Features
1.Simple structure of kiln process, easy operation and great output, extraordinarily suitable for large-medium lime production line.
2.High activity degree of lime produced in the process of rotary kiln, namely, 340~380ml in common, even up to 400ml.
3.Low rate of the less burned and the over burned in the process of rotary kiln, equal and stable quality of products.
4.Rotary kiln process can straightly calcine 10~50mm fine-sized limestone.
5.Kiln process has low integrated power consumption and can apply coal powder as fuel.
6.Both of gas fuel and solid fuel can be used for preheater - rotary kiln - cooler process, depending on conditions of local resources.

Projects
In 2014, A company in Guangxi Province, China purchased a φ4.0 x 60m lime rotary kiln from CHAENG, the rotary kiln was installed in 2017, and it was put into use in June 2017.
After use, customers made positive comments that machines of CHAENG have outstanding performance and are good at energy-saving to save large cost for users.


about CHAENG
Founded in 1958 and located in Xinxiang, Henan province, CHAENG with 60-year experience in equipment manufacturing covers an area of 330,000 m2 and its annual production value is 1 billion yuan. The company specializes in manufacturing tube mills, rotary kilns, vertical mills and large steel casting and can undertake the EPC projects of cement production lines, active lime production lines, blast furnace slag/ steel slag/ nickel slag grinding plants, and its products are sold to more than 50 countries and regions in Southeast Asia, Central Asia, South Asia, North America, South America and Europe.
Our long-term strategic partners: Arcelor Mittal, Tata Group, Pohang Iron and Steel Company, Germany CCE, Japan Chiba , Shanghai Baosteel,Voestalpine and ASGT.