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:
Oct. 11, 1977
Filed:
Jul. 23, 1976
Robert L Somerville, Neshanic, NJ (US);
Other;
Abstract
A wet phosphoric acid process involving operation of two streams, substantially equivalent, one producing phosphoric acid of a particular level of concentration, and gypsum as a by-product, and the other phosphoric acid of a different concentration, producing calcium sulfate hemihydrate as a by-product, with means for interconnecting and coordinately operating the processes so as to produce a single acid product stream of a higher concentration than the sum of the individual streams. The method consists of employing acid from one process as a wash in the second and balancing the flow streams to produce the combined product acid of enhanced final concentration and the plants involved in carrying into effect this method of operation.