GB665257A - Method of treating calcium nitrates resulting from the solubilization of lime phosphates with nitric acid - Google Patents

Method of treating calcium nitrates resulting from the solubilization of lime phosphates with nitric acid

Info

Publication number
GB665257A
GB665257A GB32184/49A GB3218449A GB665257A GB 665257 A GB665257 A GB 665257A GB 32184/49 A GB32184/49 A GB 32184/49A GB 3218449 A GB3218449 A GB 3218449A GB 665257 A GB665257 A GB 665257A
Authority
GB
United Kingdom
Prior art keywords
calcium
phosphate
nitric acid
hot gases
calcium oxide
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
GB32184/49A
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
Publication of GB665257A publication Critical patent/GB665257A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C5/00—Fertilisers containing other nitrates
    • C05C5/04—Fertilisers containing other nitrates containing calcium nitrate

Landscapes

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

Abstract

Calcium nitrate obtained by treating natural calcium phosphate with nitric acid is neutralized and dried by adding calcium oxide to a pH value of approximately 4, fusing and concentrating the resulting slurry, and then adding a further quantity of calcium oxide. Concentration may be effected by spraying the slurry into towers through which hot gases circulate. The hot gases may also be used for drying soluble phosphate or mixed fertilizer obtained by treatment of natural phosphate. Molten ammonium nitrate may be added during the second neutralization step. The resultant calcium nitrate is used as a fertilizer after spraying, centrifuging, or flaking. French Specification 937,996 is referred to.ALSO:Calcium nitrate obtained by treating natural calcium phosphate with nitric acid is neutralized and dried, to render it suitable for use as a fertilizer, by adding calcium oxide to a pH value of approximately 4, fusing and concentrating the resulting slurry, and then adding a further quantity of calcium oxide. Concentration may be effected by spraying the slurry into towers through which hot gases circulate. The hot gases may also be used for drying soluble phosphate or mixed fertilizer obtained by treatment of natural phosphate. Molten ammonium nitrate may be added during the second neutralization step. The product may be sprayed, centrifuged, or flaked. French Specification 937,996 is referred to.
GB32184/49A 1949-02-10 1949-12-15 Method of treating calcium nitrates resulting from the solubilization of lime phosphates with nitric acid Expired GB665257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR665257X 1949-02-10

Publications (1)

Publication Number Publication Date
GB665257A true GB665257A (en) 1952-01-16

Family

ID=9013191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32184/49A Expired GB665257A (en) 1949-02-10 1949-12-15 Method of treating calcium nitrates resulting from the solubilization of lime phosphates with nitric acid

Country Status (1)

Country Link
GB (1) GB665257A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001294B (en) * 1954-05-08 1957-01-24 Basf Ag Process for processing acidic calcium nitrate solutions
WO2015067328A1 (en) * 2013-11-06 2015-05-14 Remondis Aqua Gmbh & Co. Kg Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001294B (en) * 1954-05-08 1957-01-24 Basf Ag Process for processing acidic calcium nitrate solutions
WO2015067328A1 (en) * 2013-11-06 2015-05-14 Remondis Aqua Gmbh & Co. Kg Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen
US20160257574A1 (en) * 2013-11-06 2016-09-08 Remondis Aqua Gmbh & Co. Kg Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen
US10392260B2 (en) * 2013-11-06 2019-08-27 Remondis Aqua Gmbh & Co. Kg Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen
AU2018204744B2 (en) * 2013-11-06 2020-02-06 Remondis Aqua Gmbh & Co. Kg Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen
EA035648B1 (en) * 2013-11-06 2020-07-21 Ремондис Аква Гмбх Унд Ко. Кг Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen
EP3699141A2 (en) 2013-11-06 2020-08-26 Remondis Aqua GmbH & Co. KG Method for the treatment of ashes containing phosphate from waste incineration plants through wet-chemical decomposition for the recovery of aluminium, calcium, phosphorus and nitrogen compounds
EP3699141A3 (en) * 2013-11-06 2020-10-28 Remondis Aqua GmbH & Co. KG Method for the treatment of ashes containing phosphate from waste incineration plants through wet-chemical decomposition for the recovery of aluminium, calcium, phosphorus and nitrogen compounds

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