The Problem
At a plant operated by one of Jenike & Johanson's clients, a pneumatic line conveys alumina from railcars to a 12' diameter storage bin. This bin was originally designed for mass flow, but the resulting first-in-first-out flow pattern caused variations between railcars to be passed on to the process. Our client wanted to blend the alumina in order to smooth out these variations. The logical place to do this was in this bin.
Jenike & Johanson's Solution
Jenike & Johanson engineers recommended modifying the bin to incorporate a BINSERT® blender. We built and tested a scale model of the blender. We performed structural calculations and designed the necessary modifications to incorporate a BINSERT® blender in the conical hopper section. Next, we arranged for fabrication of the new hoppers and supports then our engineers made frequent visits to the fabricator's shop to ensure quality control.
The Result
This BINSERT® system has been in operation for several years, providing continuous blending of the alumina. As a result, the rejection rate due to variation in finished products has improved significantly. This dramatic improvement was achieved at a cost of only the BINSERT® system that was retrofitted to the existing bin. There were no additional operating costs.
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