GB151598A - An improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and phosphates - Google Patents

An improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and phosphates

Info

Publication number
GB151598A
GB151598A GB25338/20A GB2533820A GB151598A GB 151598 A GB151598 A GB 151598A GB 25338/20 A GB25338/20 A GB 25338/20A GB 2533820 A GB2533820 A GB 2533820A GB 151598 A GB151598 A GB 151598A
Authority
GB
United Kingdom
Prior art keywords
phosphate
calcium
cyanamide
phosphoric acid
manure containing
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
GB25338/20A
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.)
CHIMIQUES POUR L IND SOC ET
Original Assignee
CHIMIQUES POUR L IND SOC ET
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 CHIMIQUES POUR L IND SOC ET filed Critical CHIMIQUES POUR L IND SOC ET
Publication of GB151598A publication Critical patent/GB151598A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B3/00—Fertilisers based essentially on di-calcium phosphate

Landscapes

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

Abstract

The process of preparing a mixed manure containing nitrogen and phosphate described in the parent Specification is modified by the use of phosphoric acid, or a soluble acid phosphate such as monocalcium, monopotassium, or monoammonium orthophosphate, in place of sulphuric acid, for effecting the conversion of cyanamide into urea. The product is then free from calcium sulphate. According to an example, calcium cyanamide in aqueous suspension is decomposed by carbon dioxide, filtered, and the solution treated with phosphoric acid, followed by addition of insoluble calcium phosphate, lime, or calcium carbonate.ALSO:The process of preparing a mixed manure containing nitrogen and phosphate described in the parent Specification is modified by the use of phosphoric acid, or a soluble phosphate such as monocalcium, monopotassium, or monoammonium orthophosphate, in place of sulphuric acid for effecting the conversion of cyanamide into urea. The product is thus obtained free from calcium sulphate. According to an example, calcium cyanamide in aqueous suspension is decomposed by carbon dioxide, filtered, and the solution treated with phosphoric acid, followed by addition of insoluble calcium phosphate, lime, or calcium carbonate.
GB25338/20A 1919-09-26 1920-09-02 An improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and phosphates Expired GB151598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH151598X 1919-09-26

Publications (1)

Publication Number Publication Date
GB151598A true GB151598A (en) 1921-12-02

Family

ID=4406847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25338/20A Expired GB151598A (en) 1919-09-26 1920-09-02 An improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and phosphates

Country Status (1)

Country Link
GB (1) GB151598A (en)

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