GB705262A - Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates - Google Patents

Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates

Info

Publication number
GB705262A
GB705262A GB2477950A GB2477950A GB705262A GB 705262 A GB705262 A GB 705262A GB 2477950 A GB2477950 A GB 2477950A GB 2477950 A GB2477950 A GB 2477950A GB 705262 A GB705262 A GB 705262A
Authority
GB
United Kingdom
Prior art keywords
ammonia
product
fertilizer
climates
notably
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
GB2477950A
Inventor
Robert Guillet
Louis Soubies
Jean Cluzel
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.)
Office National Industriel de lAzote
Original Assignee
Office National Industriel de lAzote
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 Office National Industriel de lAzote filed Critical Office National Industriel de lAzote
Priority to GB2477950A priority Critical patent/GB705262A/en
Publication of GB705262A publication Critical patent/GB705262A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

A diralium phosphate-containing fertiliser is prepared by decomposing phosphates at temperatures not exceeding 35 DEG C. with nitric acid together with ammonium sulphate or ammonia and sulphuric acid, neutralizing the paste obtained at below 40 DEG C. with ammonia and passing the product to a granulator together with dried recycled powdered product, to produce spherical granules with a diameter above 1/8 inch. Potassium salts may be added and the ammonification may occur in stages, for example first with gaseous, then with 25 per cent. aqueous ammonia. Specifications 440,214 and 615,476 are referred to.ALSO:A dicalcium phosphate-containing fertilizer is prepared by decomposing phosphates at temperatures not exceeding 35 DEG C. with nitric acid together with ammonium sulphate or ammonia and sulphuric acid, neutralizing the paste obtained at below 40 DEG C. with ammonia and passing the product to a granulator together with dried recycled powdered product, to produce spherical granules with a diameter above 1/8 inch. Potassium salts may be added and the ammonification may occur in stages, for example, first with gaseous, then with 25 per cent aqueous ammonia. Specifications 440,214 and 615,476, [both in Group III], are referred to.
GB2477950A 1950-10-10 1950-10-10 Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates Expired GB705262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2477950A GB705262A (en) 1950-10-10 1950-10-10 Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2477950A GB705262A (en) 1950-10-10 1950-10-10 Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates

Publications (1)

Publication Number Publication Date
GB705262A true GB705262A (en) 1954-03-10

Family

ID=10217131

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2477950A Expired GB705262A (en) 1950-10-10 1950-10-10 Improvements in the manufacture of fertilizer of low hygroscopicity notably for use in tropical soils and climates

Country Status (1)

Country Link
GB (1) GB705262A (en)

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