GB349224A - Improvements in the production of fertilisers from phosphate rock and the like - Google Patents

Improvements in the production of fertilisers from phosphate rock and the like

Info

Publication number
GB349224A
GB349224A GB1110030A GB1110030A GB349224A GB 349224 A GB349224 A GB 349224A GB 1110030 A GB1110030 A GB 1110030A GB 1110030 A GB1110030 A GB 1110030A GB 349224 A GB349224 A GB 349224A
Authority
GB
United Kingdom
Prior art keywords
phosphate
nitrate
ammonium
solution
ammonium phosphate
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
GB1110030A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1110030A priority Critical patent/GB349224A/en
Publication of GB349224A publication Critical patent/GB349224A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates

Abstract

Solutions containing ammonium phosphate and nitrate are treated to precipitate an insoluble phosphate, and the latter after separation from the remaining ammonium nitrate solution is reconverted to ammonium phosphate by treatment with ammonia. Ferric nitrate may be used as precipitant, the solution preferably be maintained faintly alkaline during precipitation, and the ferric hydroxide obtained on reforming ammonium phosphate be reconverted to nitrate for re-use; or it may be used as such in the precipitation step. When the mixture of phosphate and nitrate has been obtained from phosphate rock by treatment with nitric acid in conjunction with ammonium sulphate followed by neutralization of the solution with ammonia the ammonium phosphate recovered from the iron &c. phosphate may be added during the neutralizing step. In such case the major portion of the ammonium phosphate may be recovered directly from solution by crystallization. Specificatio 343,701 is referred to.
GB1110030A 1930-04-08 1930-04-08 Improvements in the production of fertilisers from phosphate rock and the like Expired GB349224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1110030A GB349224A (en) 1930-04-08 1930-04-08 Improvements in the production of fertilisers from phosphate rock and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1110030A GB349224A (en) 1930-04-08 1930-04-08 Improvements in the production of fertilisers from phosphate rock and the like

Publications (1)

Publication Number Publication Date
GB349224A true GB349224A (en) 1931-05-28

Family

ID=9980034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1110030A Expired GB349224A (en) 1930-04-08 1930-04-08 Improvements in the production of fertilisers from phosphate rock and the like

Country Status (1)

Country Link
GB (1) GB349224A (en)

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