Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB17541/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Minerals and Chemical Corp
Original Assignee
International Minerals and Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Minerals and Chemical CorpfiledCriticalInternational Minerals and Chemical Corp
Publication of GB785016ApublicationCriticalpatent/GB785016A/en
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B25/00—Phosphorus; Compounds thereof
C01B25/16—Oxyacids of phosphorus; Salts thereof
C01B25/26—Phosphates
C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
C01B25/327—After-treatment
Abstract
Dicalcium phosphate, which may have been defluorinated, of particle size less than 80 mesh is mixed with solutions of free acids, e.g. sulphuric, phosphoric, hydrochloric and tartaric or mixtures of these acids, to produce a CaO/P2O5 ratio in the finally dried material between 1.55/1.0 and 1.95/1.0. A similar product is produced by the method of Specification 785,015 which describes the treatment of dicalcium phosphate with an acidic calcium-containing phosphatic material.
GB17541/55A1954-06-181955-06-17Improvements in or relating to method of producing agglomerate calcium phosphate mixtures
ExpiredGB785016A
(en)
A procedure for the manufacture of phosphorus-nitrogen fertilizers, and corresponding apparatus for their realization (Machine-translation by Google Translate, not legally binding)