GB290518A - - Google Patents

Info

Publication number
GB290518A
GB290518A GB31402/27A GB3140227A GB290518A GB 290518 A GB290518 A GB 290518A GB 31402/27 A GB31402/27 A GB 31402/27A GB 3140227 A GB3140227 A GB 3140227A GB 290518 A GB290518 A GB 290518A
Authority
GB
United Kingdom
Prior art keywords
sulphate
ammonium sulphate
washing
solution
leaching
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
GB31402/27A
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 GB290518A publication Critical patent/GB290518A/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
    • C05B11/08—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 sulfuric acid

Landscapes

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

Abstract

290,518. Liljenroth, F. G. July 12, 1927, [Convention date]. Drawings to Specification. Manures containing ammonium phosphate and potassium salts are produced by leaching crude phosphate with an acid, such as sulphuric or nitric acid, adding ammonium sulphate to precipitate calcium sulphate, and washing the precipitate with ammonium sulphate solution so as to recover the phosphoric acid contained therein. The calcium sulphate is treated with ammonia and carbon dioxide to produce ammonium sulphate solution, which may be concentrated and which after use for washing the calcium sulphate is added to the leaching acid or to the solution obtained by the leaching. The washing is effected at temperatures of 50-90‹ C. Potassium salts are added to the washing liquors. Calcium carbonate precipitated during the formation of ammonium sulphate is washed with water to separate ammonium sulphate and the solution is used during the formation of ammonium sulphate.
GB31402/27A 1927-07-12 1927-11-22 Expired GB290518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE290518T 1927-07-12

Publications (1)

Publication Number Publication Date
GB290518A true GB290518A (en) 1928-05-17

Family

ID=31944977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31402/27A Expired GB290518A (en) 1927-07-12 1927-11-22

Country Status (1)

Country Link
GB (1) GB290518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519959A1 (en) * 1982-01-15 1983-07-22 Rech Geolog Miniere Extn. of phosphate(s) from minerals and concentrates - by ammonium hydrogen sulphate treatment and total recovery of sulphate(s)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519959A1 (en) * 1982-01-15 1983-07-22 Rech Geolog Miniere Extn. of phosphate(s) from minerals and concentrates - by ammonium hydrogen sulphate treatment and total recovery of sulphate(s)

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