Alumina Powder Silo Retrofit Improves Product Quality The Need Alumina is a fine powder that is used in the manufacture of aluminum, abrasives, refractory material, and various household products. Large users of alumina often arrange to have it shipped to their plants in 100-ton capacity railcars. The quality and consistency of the alumina, which can vary within each railcar, can affect the manufacturing process. Some processes can detect and compensate for gradual changes without any significant loss of product quality. However, rapid changes may result in a significant loss of finished product because of unacceptable variations. At a plant operated by one of Jenike & Johanson’s clients, a pneumatic line conveys alumina from railcars to a 12-foot diameter storage bin. This bin was origina

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