Crushing and classifying method for light calcium carbonate

A light calcium carbonate, crushing and grading technology, applied in the direction of dyeing physical treatment, can solve the problems of harsh working environment, increased labor intensity, environmental pollution, etc., to avoid harsh working environment, reduce labor intensity, and reduce production costs Effect

Inactive Publication Date: 2004-04-28
陈品维
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Problems solved by technology

Since the crushing and grading use two operating systems separated from each other, the material transportation between the two is carried out in an open environment, which requires manpower to be transferred by other mechanical equipment, thus increasing the labor intensity and complicating the operation; and this kind of The classification method must adopt an open circuit system, that is, the airflow after collecting the material must

Method used

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  • Crushing and classifying method for light calcium carbonate
  • Crushing and classifying method for light calcium carbonate
  • Crushing and classifying method for light calcium carbonate

Examples

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[0016] Refer to figure 1 , The pulverizer, classifier, powder collection system and fan are connected by pipelines into a closed circuit system, and the wind pressure generated by the fan is used as the power for material transportation. The air outlet of the powder collection system 9 is connected to the inlet of the fan 1 through the pipe 10, the outlet of the fan 1 is connected to the material inlet 5 of the classifier 7 through the pipe 2, and the outlet of the pulverizer 4 is connected to the outlet of the fan 1 through the pipe 11 and The pipe 2 of the material inlet 5 of the classifier 7 is communicated, so that when the air flow conveyed by the fan flows in the pipe 2, the negative pressure generated at the junction of the pipe 11 and the pipe 2 causes the material to be transported from the crusher to the classifier 7; There is a pipe 3 connected in parallel with one end of the pipe 3 connected to the secondary air port 8 of the classifier 7; the coarse powder collection...

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Abstract

The crushing and classifying process for light calcium carbonate includes crushing dry calcium carbonate into crusher; conveying crushed calcium carbonate with blower and pipeline to classifying machine; classifying the crushed calcium carbonate material via centrifugal force airflow produces to make calcium carbonate material meeting the fineness requirement enter the powder collecting system from the top of the classifying machine and make coarse material return to crushing; and returning the airflow from the powder collecting system and with calcium carbonate powder eliminated to the entrance of the blower; and other steps. The said process has low cost, improved work environment, no environmental pollution and lower labor strength.

Description

technical field [0001] The invention relates to a method for pulverizing and classifying light calcium carbonate. Background technique [0002] At present, nano-scale light calcium carbonate is widely used as a filler in the fields of plastics and rubber. Because the application of this calcium carbonate in the above-mentioned fields must reach a certain fineness, and the calcium carbonate obtained after drying is granular, so in order to obtain calcium carbonate that meets the fineness requirements, it is necessary to pulverize the calcium carbonate and carry out sorting. The current crushing and sorting method is generally to use a pulverizer to crush the calcium carbonate first, and then transfer the calcium carbonate to the classifier for sorting by manpower or other mechanical equipment, and the materials that meet the fineness requirements are transported to the collection system The materials that do not meet the fineness requirements are collected and returned to t...

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Application Information

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IPC IPC(8): C09C3/04
Inventor 黄树平谢进艾梁文举梁健明
Owner 陈品维
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