GB300965A - Improved process for manufacturing soluble phosphatic fertilisers from tricalcium phosphates - Google Patents

Improved process for manufacturing soluble phosphatic fertilisers from tricalcium phosphates

Info

Publication number
GB300965A
GB300965A GB33731/28A GB3373128A GB300965A GB 300965 A GB300965 A GB 300965A GB 33731/28 A GB33731/28 A GB 33731/28A GB 3373128 A GB3373128 A GB 3373128A GB 300965 A GB300965 A GB 300965A
Authority
GB
United Kingdom
Prior art keywords
calcium phosphate
effected
removal
mixture
sulphuric acid
Prior art date
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
GB33731/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB300965A publication Critical patent/GB300965A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates

Abstract

300,965. Pond, J. A. Nov. 21, 1927, [Convention date]. Calcium phosphate.-A phosphatic fertilizer comprising a substantial amount of mono-calcium phosphate, some di-calcium phosphate, and a relatively small quantity of unattacked tricalcium phosphate is obtained by intimately mixing with ground tri-calcium phosphate the requisite quantity of sulphuric acid of suitable strength, say 10-20 per cent less than is required for complete formation of the monophosphate of an acid having a specific gravity of 1.36-1.55, and then subjecting the mixture in finely divided form to heat treatment at a temperature up to 280‹ F. with removal of the evolved gases or vapours until the mass is dried. The sulphuric acid used may be preheated, say to 100-150‹ F, the heating of the mixture be effected in a rotatable substantially air-tight container fitted with internal ribs, and the removal of gases be effected by suction or by means of heated air introduced under pressure or by both means. The process may be carried out continuously or intermittently.
GB33731/28A 1927-11-21 1928-11-17 Improved process for manufacturing soluble phosphatic fertilisers from tricalcium phosphates Expired GB300965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ300965X 1927-11-21

Publications (1)

Publication Number Publication Date
GB300965A true GB300965A (en) 1930-02-17

Family

ID=19915622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33731/28A Expired GB300965A (en) 1927-11-21 1928-11-17 Improved process for manufacturing soluble phosphatic fertilisers from tricalcium phosphates

Country Status (1)

Country Link
GB (1) GB300965A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504546A (en) * 1947-01-28 1950-04-18 Davison Chemical Corp Superphosphate manufacture
US2504545A (en) * 1947-01-28 1950-04-18 Davison Chemical Corp Granulated fertilizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504546A (en) * 1947-01-28 1950-04-18 Davison Chemical Corp Superphosphate manufacture
US2504545A (en) * 1947-01-28 1950-04-18 Davison Chemical Corp Granulated fertilizer

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