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Rotary kiln
- 1. 2016 Gary Li Henan DajiaMining Machinery Co., Ltd 2016-6-7 Rotary Kiln Manufacture
- 2. About us Henan DajiaMining Machinery Co., Ltd provides comprehensive field services, and extensive on-site analysis to assist plants with achieving their goals. We specialize in design produce and install whole rotary kiln projects, offering technical operational support in areas, which include kilns, burners, conveyor, coolers and other related areas. We offer training programs, and innovative solutions to assist your plant in reaching its full potential. General Service & working scope: - Rotary kiln tire and supporter roller resurfacing (grinding) - Rotary kiln inspection measurments - Hot kiln alignment - Rotary kiln maintenance - Rotary kiln design-production and installation - Trunnions, Rollers, and Kiln Tyres Rotary Kiln Application Rotary kiln is a rotating cylindrical vessel which is used for drying, calcination and sintering in a continuous process with the use of hot gases. The hot gases may be generated in an external furnace or by a flame inside the kiln. Dajia rotary kiln and sponge iron rotary kiln has been developed for performing drying, calcination and sintering work in a continuous process. Widely used for cement, pet coke calcination, dolomite, bauxite, sponge iron and other materials, it uses hot gases for the operation. Integrated with variable speed drive, process automation and instrumentation, this kiln ensures optimum operational control. In addition to technology, its design features better inlet and outlet sealing to ensure minimum false air entry. Calcination Materials Cement Aluminate Cement Limestone & Lime sludge Pet coke Calcination Minerals i.e. Bauxite and Iron Ore Sponge Iron Dolomite Kaolin Mica LECA Bauxite Oil Proppant Other materials Specifications Diameter: 1000mm to 4500mm Length: 12000mm to 130 000mm Methods of heating: Direct or indirect Capacity: 200kg/h to 210t/h Fuel: coal, natural gas, heavy oil, etc Temp range: 900- 1400°C Material: Carbon steel, Stainless steel, etc Thickness: 12mm to 100mm Structure Feature Kiln shell degree of natural deflection and rotation angle of kiln supports are carefully designed, which extends the service life of refractory lining Kiln support rollers are equipped with floating roller bearings with large diameter and small L/D for higher reliability Rotary kiln seals to the kiln inlet, which serve as an insulation layer and increase service life.
- 3. . Support roller In orderto ensure uniform use of the contact surfaces between tyres and supporting rollers, as well as the girth gear and pinion, the axial motion of the rotary kiln is controlled. The support roller mechanism counteracts the forces which are generated by the slope of the kiln. It operates automatically and is controlled by non-contact. Kiln Tyre
- 4. The purpose oftyres (often called riding rings) and rollers is to support the kiln and allow it to rotate with minimal friction. Rotary kilns are among the largest items of permanently moving industrial machinery, the largest examples weighing in their fully-loaded form several thousand tonnes. Despite the challenges of their size and their high temperature, the best examples of rotary kiln rotate on their rollers almost frictionlessly, the power supplied by the drive being almost entirely in order to oppose the eccentric load of the contents of the kiln. On cutting the power to a kiln, the kiln will “roll back” and unless a brake is applied, will continue to swing like a pendulum for ten or fifteen minutes before coming to a standstill. This finely-tuned mechanical condition requires sophisticated design of the kiln’s supports. Advantages of Roller Kiln The unique structure design of splined tyre and shell shim plate guarantees the 100% synchronous operation of shell and tyre; it can also transform the radial force along shell to the tangential. In this way, the deformation of shell could be effectively restricted and the service life of refractory brick is prolonged. Self-alignment kiln support guarantees the 100% contact of support roller and tyre and high transmission efficiency, so as to prolong the service life of cast and forge parts. Kiln drive via support rollers is characterized by compact layout, stable operation, reliable performance and low maintenance. Kiln Ring Gear Ring Gears are also known as starter ring and comprises medium carbon steel ring with teeth which comes fitted on periphery of flywheel of internal combustion engine generally in automotive applications. With the teeth driven by smaller gear (pinion) of starter motor, its primary use is in transferring torque from starter motor pinion to flywheel/flexplate for engine rotation. Kiln Inlet Seal Kiln inlet seal will be of friction type ring. Two nos. rings, carrying wear shoe segments on face, with one ring being rotating with Kiln, slide on face to face. The wear shoes are lubricated by high temperature grease. The sliding ring have pneumatic cylinders, distributed equally on the periphery, which always keep both the shoe rings of primary seal in contact, even during and upward-downward movement. Kiln Discharge Seal
- 5. Discharge end sealis made up of radially placed overlapping segmented graphite blocks. This allows movement of shell in radial and axial direction while effectively sealing. Various Rotary Kiln Loading Machinery for Clients Turnkey Plants Cement Project Mineral Processing Plant Light Weight Expanded Clay Aggregate Plant Petro-coke Calcination Plant Sponge Iron Plant Lime Plants Oil Proppant Calcination Plants Bauxite Calcination Plants Contract / Outsource Manufacturing …….. Henan Dajia Mining Machinery Co., Ltd Tel: +86-371-67575157 Fax: +86-371-67571922 Mob: +86-15617816797 Mail: sell@chinadjks.com Web: www.dajia-engineering.com Add: 500m West, crossroad of Rizhao and Industrial Road, Zhengzhou city, China.