Selecting the correct device is crucial to successfully handling solids. It must deal with discrete pieces that have physical size, electrical properties, frictional differences and surface characteristics that can change with the environment.
Production managers, quality control managers and maintenance engineers alike have encountered weigh cells that never worked properly. Why? Why have so many switched from a supposedly high accuracy load cell solution to old fashioned level probes or sight glasses? This article touches on the worst culprits for problems and how to avoid them.
Ryan Titmas, product manager, Sartorius North America
Handling slurries (a mix of solids and liquids), should be based on experience and experiments, not theory. Much of the knowledge obtained from pneumatic conveyors and fluidization systems can be used in understanding slurries.
Fine powders often need air injection to increase flow rates to an acceptable level. With entrained or injected air, powders flow like water, but when deaerated, the extremely low flow rate may be confused with a hang-up or arching condition.
As the pharmaceutical industry has matured, concerns about the safe handling of drug compounds during the manufacturing process have increased. To meet exposure limits and protect batches from any kind of contamination, the industrys need for improved containment has increased.
There are numerous industries that depend on size reduction to improve performance or to meet specifications. This article details size-reduction techniques and equipment that may assist you when handling these materials.
Particulate solids are often required to be introduced into a flowing gas stream. If not done correctly, introduction of solids into the gas stream can lead to impingement of solids on the pipe, resulting in erosion of the pipe in the area of the solids introduction.