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. 15, 1984
Filed:
May. 03, 1982
Duk S Chun, Uniontown, OH (US);
David A Stermole, Bedford Heights, OH (US);
Clifford E Loehr, Norton, OH (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
Calcium hypochlorite particles and larger sodium chloride crystals are separated by passing an aqueous slurry containing such particles and crystals into a first classification zone comprising a two-stage substantially vertical elutriator-classifier. A first slurry in which the solid phase is predominantly calcium hypochlorite particles is removed from the upper stage of the first classification zone. A second slurry in which the solid phase is predominantly sodium chloride crystals is removed from the lower stage of the first classification zone and forwarded to a second classification zone comprising a two-stage substantially vertical elutriator-classifier. A slurry in which the solid phase is predominantly calcium hypochlorite particles is removed from the upper stage of the second classification zone and, in one embodiment, combined with overflow from the upper stage of the first classification zone. A slurry in which the solid phase is predominantly sodium chloride crystals is removed from the lower stage of the second classification zone. Elutriation fluid comprising a saturated solution of calcium hypochlorite and sodium chloride is introduced into the lower stages of each of the first and second classification zones.