Heyl & Patterson Blog

Turning up the Heat on Process Equipment

Posted by H&P Blog on Wed, Jun 08, 2011 @ 02:02 PM

The term "calcination" broadly refers to a process at extremely high temperatures which effects a desired change in a given material.  Calcining can include oxidation, reduction, removal of chemically bound water or other types of molecular change, crystal structural change or pyrolysis that converts a material's physical or chemical properties.  Calcining is typically used to process materials that are fine and dusty, sensitive to oxidization, combustible, explosive, potentially contaminating and/or thermally sensitive.

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Tags: Heyl & Patterson, trade shows & conferences, industrial dryers, torrefaction, process equipment, fluid bed dryers, powder & bulk solids, particle size reduction, biomass

Powder Processing is Fine Work

Posted by H&P Blog on Wed, May 18, 2011 @ 11:00 AM

Flour mills may not seem to be particularly dangerous places, but they have been the source of some devastating explosions.  In 1878 in Minneapolis, Minnesota, a spark ignited airborne flour dust within the Washburn “A” Mill, the largest flour mill in the U.S. at the time, and resulted in the deaths of 18 people, a fire that destroyed five other mills and reduced the city’s milling capacity by one third.   Powders such as flour have a very high surface area, so they can combust with explosive force if ignited.

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Tags: Heyl & Patterson, trade shows & conferences, industrial dryers, rotary dryers, process equipment, bulk material handling equipment, fluid bed dryers, powder & bulk solids, particle size reduction