Leaf filter test method for determining filtration...

Details Leaf filter test method for determining filtration... Leaf filter test method for determining filtration...

G - Physics

01

N

73/97

G01N 15/00 (2006.01) B01D 35/00 (2006.01) G01N 15/08 (2006.01)

Patent

CA 1042229

LEAF FILTER TEST METHOD FOR DETERMINING FILTRATION CHARACTERISTICS OF A FIBROUS SLURRY AND APPARATUS FOR PERFORMANCE THEREOF Abstract of the Disclosure A simple and rapid leaf filter test, and an apparatus for use therein, is described for measuring the filtration, or drainage, characteristics of a fibrous slurry. The test comprises submerging the filter leaf in the slurry, applying a partial vacuum to the leaf to build up a layer of solids on the leaf, removing the solids-coated leaf from the slurry, drying and weighing the solids collected, and then determining filtration characteristics (e.g., filtration rate) by means of a predetermined formula. The results obtained by this test are accurately reproduced in production size systems, e.g., a wet process for the manufacture of asbestos-cement products such as sheet or pipe. The test utilizes a portable, light-weight leaf filter and can be run in 2-3 minutes.

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