http://www.che.com Chemical Engineering en-us 2013 Wed, 19 Jun 2013 17:38:02 EDT Question:  Besides rotary, fluidized-bed, and flash dryers, what other types of dryers can remove moisture and other volatile compounds from bulk solids? Answer:  For many applications, an efficient and cost-effective alternative is to dry the bulk solid in a silo equipped with heat exchangers or modified to permit injection of a gas. Compared to other dryers, drying silos have several advantages:... http://www.che.com/only_on_che/ask_the_experts/solids_processing/7903.html Mon, 25 Apr 2011 0:00:00 EDT Question:  Should we convert from manual dumping of sacks to discharging from bulk bags?    Answer: Dry, bulk chemicals have long been purchased in 50-lb (23-kg) paper and plastic sacks for several reasons. In volumes smaller than rail and truckloads, sacks were often the only packaging in... http://www.che.com/only_on_che/ask_the_experts/solids_processing/6160.html Mon, 1 Nov 2010 0:00:00 EDT Question:  What can we do to prevent caking? When our powders are packaged into bags at our plant, they appear to be free of agglomerates.  However, our customers report that when the bags are opened at their facilities, they observe an excessive amount of caked material.  This results in rework and potential losses in sales.  We suspect that moisture is the cause, but our bags include a vapor barrier, and our records show that we are indeed producing dry materials.... http://www.che.com/only_on_che/ask_the_experts/solids_processing/5600.html Mon, 26 Apr 2010 0:00:00 EDT