GB312169A - Improvements in and relating to the production of mixed fertilisers - Google Patents

Improvements in and relating to the production of mixed fertilisers

Info

Publication number
GB312169A
GB312169A GB15603/29A GB1560329A GB312169A GB 312169 A GB312169 A GB 312169A GB 15603/29 A GB15603/29 A GB 15603/29A GB 1560329 A GB1560329 A GB 1560329A GB 312169 A GB312169 A GB 312169A
Authority
GB
United Kingdom
Prior art keywords
distillation
nitric acid
calcium phosphate
alkali
ammonia
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
GB15603/29A
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 GB312169A publication Critical patent/GB312169A/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

312,169. Jost, F. May 21, 1928, [Convention date]. Addition to 306,046. Manures.-the treatment of calcium phosphate with nitric acid and of the solution so obtained with alkali chloride described in the parent Specification is modified to obtain mixed fertilizers by distilling a mixture of the phosphate, an alkali chloride or chlorides, and nitric acid. Vapours of hydrochloric and nitric acid evolved are absorbed in alkali, for instance by ammonia, milk of lime. or soda lye, to produce a strewable non- hygroscopic fertilizer. The residue consists mainly of alkali nitrate and calcium phosphate, with a little sodium chloride, which' forms a valuable mixed fertilizer. If the distillation is interrupted so that an acid residue is obtained, this may be neutralized with ammonia. Distillation may be effected under reduced pressure; or in a current of air to prevent loss of nitric acid ; and tri-calcium phosphate separating out during the distillation may be separately removed. The process may be interrupted before distillation is complete, the solid residues being used in a fresh distillation. Excess of sodium chloride and calcium phosphate with respect to the nitric acid may be used.
GB15603/29A 1928-05-21 1929-05-18 Improvements in and relating to the production of mixed fertilisers Expired GB312169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE312169X 1928-05-21

Publications (1)

Publication Number Publication Date
GB312169A true GB312169A (en) 1930-05-22

Family

ID=6133652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15603/29A Expired GB312169A (en) 1928-05-21 1929-05-18 Improvements in and relating to the production of mixed fertilisers

Country Status (1)

Country Link
GB (1) GB312169A (en)

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