The following relation between and p for superlight CaCO 3 has been determined to be a

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The following relation between α and Δp for superlight CaCO3 has been determined to be 

a = 8.8 x 1010 [1 + 3.36 x 10-4 (Δp)0.86]

where Δp is in pounds force per square foot. This relation is followed over a pressure range from 0 to 1,000 lbƒ/in.2. A slurry of this material giving 3.0 lb of cake solid per cubic foot of filtrate is to be filtered at a constant pressure drop of 70 lbƒ/in.2 and a temperature of 70°F. Experiments on this sludge and the filter cloth to be used gave a value of R = 1.2 x 1010 ft-1. A pressure filter of the tank type is to be used. How many square feet of filter surface are needed to give 1,400 gal of filtrate in a 1-h filtration? The viscosity is that of water at 70°F.

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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