External-circulation slag vertical roller mill

A technology of vertical roller mill and external circulation, which is applied in the direction of grain processing, etc. It can solve the problems of difficult adjustment of particle size, low grinding efficiency, and poor air tightness of feeding system, so as to achieve easy material particle size, improve grinding efficiency, The effect of small particle size range

Inactive Publication Date: 2013-01-02
扬州中材机器制造有限公司
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AI Technical Summary

Problems solved by technology

[0003] The current domestic vertical mills have shortcomings such as short life of the grinding mechanism, low grinding efficiency, difficulty in large-scale, poor airtightness of the feeding system, low powder selection efficiency of the powder selection system, difficult adjustment of particle size, low operating rate and difficult maintenance. Compared with foreign advanced products, the performance of vertical mills is very different, especially for the grinding of high hardness cement clinker and slag, it is diff

Method used

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  • External-circulation slag vertical roller mill
  • External-circulation slag vertical roller mill
  • External-circulation slag vertical roller mill

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Experimental program
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Embodiment Construction

[0019] As accompanying drawing, motor one 1 drives speed reducer one 2 to run, and the grinding disc 6 that links to each other with speed reducer one 2 output shafts does rotary motion simultaneously. The slag enters the collecting pipe 10 from the rotary air lock feeder 19 through the feeding pipe 20 installed on the mill shell 11 and falls to the center of the millstone 6, and moves along the surface of the millstone 6 to the edge under the action of centrifugal force. A material layer is formed at the outer edge of the grinding disc 6 surface. The rotary shaft 8 and the grinding roller shaft 9 installed in the bearing seat at the upper end of the column 3 together form a rocker arm, and the hydraulic (pneumatic) spring 4 controls the large grinding roller 25 and the small grinding roller through the rocker arm composed of the rotary shaft 8 and the grinding roller shaft 9. 26 to apply grinding pressure, the grinding disc 6 drives the grinding rollers to rotate along the re...

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Abstract

The invention relates to an external-circulation slag vertical roller mill. The vertical roller mill comprises a mill body; a powder selecting mechanism comprising a stator and a rotor is arranged on the upper part of the mill body; the powder selecting mechanism is connected with a discharge port; the side of the mill body is provided with a feeding pipe at the lower part of the powder selecting mechanism; the lower part of the mill body is provided with a discharge pipe corresponding to the powder selecting mechanism; the lower part of the discharge pipe is provided with a roller mechanism corresponding to the feeding pipe; and the roller mechanism is provided with a blowing device; a discharge pipe is arranged at the bottom of the mill body; and the discharge pipe is connected to the feeding pipe through a buckettype elevator. The external-circulation slag vertical roller mill provided by the invention is simple and convenient for installation and repair, and has greatly improved grinding efficiency, service life and operation rate.

Description

technical field [0001] The invention relates to the field of a vertical roller mill for external circulation of slag. Background technique [0002] The vertical roller mill integrates the functions of grinding, drying, classification (powder selection) and conveying, and has the advantages of high efficiency, low energy consumption, low abrasion, high operation rate, compact structure, small site and space occupation, low noise, The fineness of the product is easy to adjust and other obvious advantages, and it is more and more widely used in the grinding and ultrafine grinding of cement (raw meal, coal, clinker), metallurgical slag, materials, chemical industry and other materials. [0003] The current domestic vertical mills have disadvantages such as short service life of the grinding mechanism, low grinding efficiency, difficulty in large-scale, poor airtightness of the feeding system, low powder selection efficiency of the powder selection system, difficult adjustment of...

Claims

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Application Information

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IPC IPC(8): B02C15/04
Inventor 杨生强
Owner 扬州中材机器制造有限公司
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