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Powder and Bulk Engineering
Tuesday, September 02, 2014
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Powder and Bulk Engineering is a technical publication devoted to readers in the bulk solids market, worldwide.
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Item Details:
Publication Date: 12/2003
Pages: 3
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PDF Format
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$7.50
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Improving your screening operation with ultrasonic deblinding

In a vibratory screener, powders can lodge in the screen's mesh openings if the mesh is fine, the particles are sticky, or many particles are similar in size to the mesh openings. The phenomenon, known as blinding, reduces the screener's capacity. This article explains how ultrasonic deblinding can prevent screen blinding, with information on controlling the method, an industry example explaining how one company used the method to improve its screening operation, and some installation advice.

Screening's importance in fine powder manufacturing can't be overestimated: Accurately classifying the powder into desired size fractions at high speed is critical to controlling the final product quality and meeting production requirements. Thus the problem of screen blinding, in which particles become lodged in the mesh openings, can become a major screening headache.

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