This article discusses the different types of vacuum filtration technologies in the market for acidic slurries and the issues involved both from a process view and a safety view. Also covered is the use of alternate materials available in the construction of vacuum belt filters to address chemical compatibility concerns in applications using sulfuric acid and hydrochloric acid as the liquid constituent in a slurry. This article continues with a case study including laboratory testing and scale up to a production vacuum belt filter. The challenge is to process 2,200 kg/h dry solids that have been precipitated from a sulfuric acid solution.

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