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1. (WO1989011902) SLURRY FILTERING APPARATUS

Pub. No.:    WO/1989/011902    International Application No.:    PCT/JP1989/000280
Publication Date: Dec 14, 1989 International Filing Date: Mar 15, 1989
IPC: B01D 33/073
B01D 33/17
B01D 33/21
Applicants: FUJI FILTER KOGYO KABUSHIKI KAISHA

TAKAHASHI, Yuichi

AZUMA, Katsuji

Inventors: TAKAHASHI, Yuichi

AZUMA, Katsuji

Title: SLURRY FILTERING APPARATUS
Abstract:
In a slurry filtering apparatus having valves and valve seats of abrasion-resistant metal, a pump pressurizes and ejects a slurry containing hard particles at a high concentration. The flow of slurry is forced upon a filter surface in a direction oblique to it. Since the ejection of slurry causes cavitation and abrupt changes in velocity in the flow, shearing forces are created to scatter larger particles. This prevents filter-cake deposition while permitting parallel-flow filtration.