GB191113891A - Improvements in the Production of Fertilizers from Natural Phosphates. - Google Patents

Improvements in the Production of Fertilizers from Natural Phosphates.

Info

Publication number
GB191113891A
GB191113891A GB191113891DA GB191113891A GB 191113891 A GB191113891 A GB 191113891A GB 191113891D A GB191113891D A GB 191113891DA GB 191113891 A GB191113891 A GB 191113891A
Authority
GB
United Kingdom
Prior art keywords
phosphates
heating
fertilizers
citrate
soluble
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
Inventor
Spencer Baird Newberry
Harvey Newton Barrett
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
Application granted granted Critical
Publication of GB191113891A publication Critical patent/GB191113891A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
    • C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates

Landscapes

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

Abstract

13,891. Newberry, S. B., and Barrett, H. N. June 10. Calcium, aluminium, iron, and other phosphates.-Natural phosphates are rendered citrate-soluble for use as fertilizers by heating them in powdered form at a temperature of 2500-3000‹ F. in an oxidizing-atmosphere and in the presence of products of combustion, so that the material is sintered or semi-fused, and continuing the heating for one or two hours until practically all the phosphate is citrate - soluble, the material being agitated during the process so that fresh surfaces are continually exposed. The calcination may be conveniently performed in an internally-fired revolving kiln. A shorter heating-period is sufficient if there are added, in the proportion of from 5 to 15 per cent., substances which evolve volatile products at high temperatures. Carbon, alkaline compounds, sulphur, sulphur oxides, sulphuric acid phosphoric acid, alkali phosphates, alkali silicates, and carbonates and sulphates of the alkaline earths are suitable substances.
GB191113891D 1911-06-10 1911-06-10 Improvements in the Production of Fertilizers from Natural Phosphates. Expired GB191113891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191113891T 1911-06-10

Publications (1)

Publication Number Publication Date
GB191113891A true GB191113891A (en) 1912-02-15

Family

ID=32500274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191113891D Expired GB191113891A (en) 1911-06-10 1911-06-10 Improvements in the Production of Fertilizers from Natural Phosphates.

Country Status (1)

Country Link
GB (1) GB191113891A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533027A (en) * 1946-04-26 1950-12-05 Cornonet Phosphate Company Method of forming porous nodules
US2565351A (en) * 1947-02-28 1951-08-21 Int Minerals & Chem Corp Production of defluorinated tricalcium phosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533027A (en) * 1946-04-26 1950-12-05 Cornonet Phosphate Company Method of forming porous nodules
US2565351A (en) * 1947-02-28 1951-08-21 Int Minerals & Chem Corp Production of defluorinated tricalcium phosphate

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