Superfine needle-shaped wollastonite powder production process and device

A technology of wollastonite powder and production device, which is applied in grain processing and other directions, can solve the problems of immature technical equipment and other problems, and achieve the effect of improving aspect ratio and sedimentation value, high aspect ratio and well-preserved

Inactive Publication Date: 2016-08-17
LONGYAN SHANHE MACHINERY MFG
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a production process and device for ultrafine acicular wollastonite powder, so as to solve the problem that the technical equipment in the prior art is not mature enough

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  • Superfine needle-shaped wollastonite powder production process and device

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Embodiment Construction

[0063] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0064] see figure 1 A kind of superfine acicular wollastonite powder production process of the present invention, comprises the following steps,

[0065]Crushing wollastonite raw ore until the average particle size is less than 1cm, crushing with a pulverizer to obtain needle-shaped powder with a sedimentation value of 60-90, vibrating and sieving the needle-shaped powder to obtain needle-shaped powder with a high aspect ratio, and then Enter the jet mill for jet crushing to obtain acicular wollastonite powder with a fineness of 600-3000 mesh and an aspect ratio greater than 10:1.

[0066] Specifically, it also includes the step of primary crushing the wollastonite raw ore to an average particle size of less than 5 cm, and then sending it...

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Abstract

The invention provides a superfine needle-shaped wollastonite powder production process and device. The superfine needle-shaped wollastonite powder production process comprises the following steps that wollastonite raw ore is crushed till the average particle size is smaller than 1 cm and is pulverized through a pulverizer, so that needle-shaped powder with the sedimentation value being 60-90 is obtained; the needle-shaped powder is vibrated and screened, and thus needle-shaped powder large in length-diameter ratio is obtained; and the needle-shaped powder large in length-diameter ratio enters an airflow mill to be subjected to airflow pulverization, so that needle-shaped wollastonite powder with the fineness being 600-3000 meshes and the length-diameter ratio being larger than 10:1 is obtained. Specifically, the superfine needle-shaped wollastonite powder production process further comprises the steps that the wollastonite raw ore is subjected to primary crushing till the average particle size is smaller than 5 cm and then sent into a dental plate jaw type crusher to be crushed till the average particle size is smaller than 0.5 cm. According to the superfine needle-shaped wollastonite powder production process and device, the problem that a superfine needle-shaped wollastonite powder production process and device are not mature enough in the prior art is solved.

Description

technical field [0001] The invention relates to the field of mineral production, in particular to a production process and device for ultrafine acicular wollastonite powder. Background technique [0002] Ultrafine acicular wollastonite powder is mainly used in high-end filling fields such as high-grade anti-corrosion coatings and automotive engineering plastics, and has unique and excellent properties. At present, ultrafine acicular wollastonite powder is mainly prepared by two processes, one is ultrafine mechanical milling, and the other is jet milling. Although these two processes and equipment have been put into the market for a long time when used for other materials, they have a series of insurmountable defects when applied to the production of ultrafine acicular wollastonite powder. for example: [0003] 1. Wollastonite raw ore often contains impurities such as quartz, garnet, and diopside. The Mohs hardness of wollastonite is 4 to 4.5, while the Mohs hardness of qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C13/14B02C13/28B02C1/04B02C1/10
CPCB02C1/04B02C1/10B02C13/14B02C13/28B02C21/00B02C2013/2808
Inventor 刘荣贵蓝辉黄灿荣郑滨滨
Owner LONGYAN SHANHE MACHINERY MFG
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