Gypsum Flow Problems Solved at Lafarge Cement Lafarge - Joppa, Illinois The Need Lafarge’s Joppa, Illinois cement plant had experienced severe flow and operational problems with their gypsum bin. These flow problems significantly impacted productivity, created housekeeping and safety issues, and required the limited available manpower to spend significant time tending to these problems. Even with attempted modifications over the years, severe flow problems were still being experienced. The gypsum bin had a number of serious solids handling design flaws. A large region of stagnant gypsum existed because of the bin’s flat bottom design. This design resulted in a funnel flow pattern. In addition, the conical hoppers were neither steep enough nor smooth enough to ensure reliable gypsum flo

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