A kiln tail cover device for a rotary kiln
A technology of rotary kiln and kiln tail cover, applied in the field of rotary kiln, which can solve the problems of reduced service life of the feeding chute, reduced rigidity of the kiln tail cover, and increased deformation, and achieves the goals of reduced deformation, lower temperature, and increased rigidity Effect
Active Publication Date: 2015-09-30
SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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Problems solved by technology
At present, most of the raw materials for the production of prebaked anodes are calcined in rotary kilns and tank furnaces. The specifications of the rotary kiln are developing towards large-scale, and the specifications of the kiln tail cover are also increased accordingly. The problem brought about is that the feeding end The chute also adopts the cantilever beam structure, which will cause excessive bending moment, the service life of the unloading chute without cooling device will be reduced, and the rigidity of the kiln tail cover will decrease and the deformation will increase
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[0028] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the embodiments.
[0029] like Figure 1-Figure 2 As shown, the kiln tail hood device of the rotary kiln of the present invention is a structure in which the feed part and the flue gas discharge part are connected through a cone tube 8 . Mainly include: hopper 1, cold air inlet 2, rotary kiln 3, cylinder body 4, cold air outlet 5, feeding chute 6, air duct device 7, cone 8, No. 1 detection port 9, No. 2 detection port 10, connecting cylinder 11. Connecting pipe 12, lower steel pipe 13, upper steel pipe 14, etc. The specific structure is as follows:
[0030] The feeding part includes a cylinder 4, a hopper 1 and an air duct device 7. The left side of the cylinder 4 is connected to the tail end of the rotary kiln 3, the lower part of the cylinder 4 is provided with a hopper 1, and the...
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The invention relates to the field of rotary kilns, in particular to a cold kiln hood device of a carbon rotary kiln. The cold kiln hood device is of the structure that a feeding portion is connected with a smoke discharging portion through a conic cylinder. The feeding portion comprises a cylinder body, a hopper and an air duct device. One side of the cylinder body is connected with the tail end of the rotary kiln and the hopper is arranged on the lower portion of the cylinder body. A discharging chute and the air duct device are arranged inside the cylinder body, the cantilever end of the discharging chute is communicated with the rotary kiln, and the discharging chute is connected with the air duct device in an abutting mode. According to the structure, the discharging chute is sufficiently supported, overlarge bending moment caused by an overlarge cantilever is avoided, the temperature of the discharging chute is lowered, the service life of the discharging chute is prolonged, the rigidity of a cold kiln hood of the rotary kiln is improved, the deformation amount of the cold kiln hood in the process of production is reduced, and data of the gas temperature and data of the oxygen content of the tail portion of the rotary kiln are extracted, so that timely production adjustment is facilitated.
Description
technical field [0001] The invention relates to the field of rotary kilns, in particular to a kiln tail cover device for a carbon rotary kiln. Background technique [0002] In recent years, my country's electrolytic aluminum industry has developed rapidly and has become the world's largest producer of primary aluminum. The highly efficient and environmentally friendly 500kA large prebaked electrolytic cell has become the main cell type in my country's electrolytic aluminum industry. With the increase of the cell type, the output of electrolytic aluminum increases, and the demand for large prebaked anodes is also increasing. At present, most of the raw materials for the production of prebaked anodes are calcined in rotary kilns and tank furnaces. The specifications of the rotary kiln are developing towards large-scale, and the specifications of the kiln tail cover are also increased accordingly. The problem brought about is that the feeding end The chute also adopts the cant...
Claims
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IPC IPC(8): F27B7/20
Inventor 齐忠昱方明勋王林华
Owner SHENYANG ALUMINIUM MAGNESIUM INSTITUTE