The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1991
Filed:
May. 24, 1990
Applicant:
Inventor:
Henri G Pierson, Tenerife, ZA;
Assignee:
D & C Limited, Monrovia, LR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210258 ; 210259 ; 210396 ; 210400 ; 210406 ; 210408 ; 210772 ; 6818 / ;
Abstract
In a vacuum belt filter, in order to allow for additional washing of filter cake, a plate is mounted in an inclined disposition above the upper run of the belt with its lower end directed upstream so that as the belt is progressed filter cake moves up over said plate. At the top of the plate, the cake drops into a receptacle and is washed and reslurried by liquid from jets before being returned to the belt downstream, preferably immediately below, the inclined plate. As an alternative to immediate return to the belt, reslurried cake may be transported from the receptacle to a reservoir for further washing or prolonged leaching before it is returned.