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:
Feb. 11, 1986
Filed:
Feb. 23, 1984
Applicant:
Inventors:
Gijsbertus H Calis, Hulsberg, NL;
Matheus H Jennekens, Born, NL;
Assignee:
Unie van Kunstmestfabrieken B.V., Utrecht, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
23301 ; 23304 ;
Abstract
Separating Ca(NO.sub.3).sub.2.4H.sub.2 O from a nitrophosphate digestion liquor by crystallization, wherein Ca(NO.sub.3).sub.2.4H.sub.2 O seeding material with a particle size smaller than 100 .mu.m is added to this liquor at a temperature of 0.degree.,1.degree.-2.degree. C. lower than the saturation temperature, the resulting liquor is batchwise cooled, and the Ca(NO.sub.3).sub.2.4H.sub.2 O crystallized out is separated from the cooled liquor. The Ca(NO.sub.3 ).sub.2.4H.sub.2 O is substantially crystallized out without excessive cooling as very coarse and uniform particles which can be easily separated out.