Each cylindrical silo on the 11’11" tall Prestwin was inherently stronger than the Presflo’s hopper shape, which was strengthened by heavy ribs against implosion during rapid unloading. Additionally, each silo on featured a 2’ diameter perforated aeration base plate, allowing air to be pumped into the heart of the 515.5 cubic feet load, making the cement behave like a liquid while keeping the fine particles out of the air supply system. As such Prestwins were better adapted to carrying finer grained runny solids such as lime, hydrate of aluminium, soda ash, fertilizers and chalk.
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Each cylindrical silo on the 11’11" tall Prestwin was inherently stronger than the Presflo’s hopper shape, which was strengthened by heavy ribs against implosion during rapid unloading. Additionally, each silo on featured a 2’ diameter perforated aeration base plate, allowing air to be pumped into the heart of the 515.5 cubic feet load, making the cement behave like a liquid while keeping the fine particles out of the air supply system. As such Prestwins were better adapted to carrying finer grained runny solids such as lime, hydrate of aluminium, soda ash, fertilizers and chalk.
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