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Powder and Bulk Engineering
Tuesday, July 29, 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: 05/1994
Pages: 5
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PDF Format
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$7.50
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A practical approach to improving your pneumatic unloading rate

Time is money. If your plant receives or ships truck trailer or railcar loads of dry bulk materials that are pneumatically unloaded, improving your unloading rate can save time and cut costs. This article outlines a practical approach to speeding pneumatic unloading, with sections on predicting the unloading rate, determining optimum air volume, and overcoming problems in determining the unloading rate. The article also explains how a cement plant sped up its pneumatic unloading operation.

Does this problem sound familiar? After delivering cement all day to its regular customers, during the night a cement trucking company pneumatically unloads 1,000 tons of cement -- about 80 27,500-pound tank trailer loads -- to a cement plant's storage silo. Using a truck-mounted pneumatic unloading system to unload the tank trailers takes 45 to 60 minutes per load, which is too slow and creates a long line of trucks waiting to unload. How can the unloading be sped up?

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