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Secondary cement and raw material selection process and fluid-bed conveyer and powder selection machine

A boiling type powder separator technology, applied in the direction of solid separation, separation of solids from solids with air flow, chemical instruments and methods, etc., can solve harmful and non-beneficial problems, and achieve the effect of improving the efficiency of powder selection

Inactive Publication Date: 2005-12-21
赵盘 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These fine powders flow into the coarse material conveyor together with the coarse powder return, and return to the mill for repeated grinding, which is harmful but not beneficial

Method used

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  • Secondary cement and raw material selection process and fluid-bed conveyer and powder selection machine
  • Secondary cement and raw material selection process and fluid-bed conveyer and powder selection machine
  • Secondary cement and raw material selection process and fluid-bed conveyer and powder selection machine

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Embodiment Construction

[0037] Such as figure 1 As shown, the secondary powder selection process includes sending the milled powder from the ball mill into the main powder separator for sorting to obtain qualified finished products and coarse powder returns, and the coarse powder returns are then processed by the secondary powder selection device. Secondary sorting, sorting out qualified secondary finished products and secondary coarse materials, and the secondary coarse materials are sent back to the ball mill for ball milling. The secondary powder selection device includes a boiling conveyor, a boiling powder separator, and a boiling conveyor The coarse powder returned by the main separator is transported to the ball mill head, and the high-concentration dust-containing airflow is separated from the coarse powder return during the conveying process, and the high-concentration dust-containing airflow enters the boiling type powder separator for further separation The qualified secondary finished pro...

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Abstract

A secondary powder selection process for cement and raw meal. The coarse powder returned from the main powder separator enters the boiling conveyor. Qualified secondary finished products and secondary coarse materials are obtained, and the secondary coarse materials are returned to the outlet of the fluidized conveyor, and returned to the head of the ball mill to improve the efficiency of comprehensive powder selection, and the coarse powder returned to the ball mill is returned The proportion of qualified fine powder in the material is reduced, which improves the efficiency of ball milling. The fluidized conveyor used in conjunction with it includes a trough-shaped shell, an upper cover, a conveying component, at least one fluidized bed and a dusty gas collection port. The boiling powder separator used in conjunction with it includes a cylindrical shell, a conical louver-type rotor, an air inlet, an air outlet and a coarse material outlet. The lower bottom of the shell is inclined, and there is a A ventilating plate inclined in the same direction on the bottom surface, some nozzles are evenly distributed on the ventilating plate to form a circular boiling chute.

Description

(1) Technical field: [0001] The invention relates to a process and equipment for selecting powder after ball milling of cement or raw meal, a process for secondary powder selection of cement and raw meal, and the structure of a boiling conveyor and a boiling powder separator applied to the process. (two) background technology: [0002] Cement and raw material closed-circuit grinding systems generally use powder classifiers to select qualified fine powder for grading equipment. There are many types of powder separators such as centrifugal type, cyclone type, eddy current type, rotating cage type, Osepa and so on. The grinding efficiency is related to many process conditions of the system. When the process conditions before cement and raw meal are the same, the output of the mill is only related to the performance of the classifier itself. The powder selection efficiency of the powder separator is generally 50-75%. Taking the powder selection efficiency of 70% as an example,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B7/083
Inventor 赵盘赵盼兮
Owner 赵盘
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