CO6210122A1 - CALCIUM NITRATE - Google Patents

CALCIUM NITRATE

Info

Publication number
CO6210122A1
CO6210122A1 CO09038652A CO09038652A CO6210122A1 CO 6210122 A1 CO6210122 A1 CO 6210122A1 CO 09038652 A CO09038652 A CO 09038652A CO 09038652 A CO09038652 A CO 09038652A CO 6210122 A1 CO6210122 A1 CO 6210122A1
Authority
CO
Colombia
Prior art keywords
mol
decantation
stage
centrifugation
calcium nitrate
Prior art date
Application number
CO09038652A
Other languages
Spanish (es)
Inventor
Torstein Obrestad
Peter Mutsaers
Ingar Wallestad
Original Assignee
Yara Int Asa
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 Yara Int Asa filed Critical Yara Int Asa
Publication of CO6210122A1 publication Critical patent/CO6210122A1/en

Links

Landscapes

  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Fertilizers (AREA)
  • Removal Of Specific Substances (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Un método para la purificación de soluciones o fundidos de nitrato de calcio, caracterizado porque este comprende la etapa de decantación. El método de acuerdo con la reivindicación 1, caracterizado porque la decantación se sigue por centrifugación de la fase de lodo. El método de acuerdo con la reivindicación 1 o 2, caracterizado porque el lodo se recicla por retorno a la etapa de digestión de fosfato de roca. El método de acuerdo con la reivindicación 1, 2, o 3, caracterizado porque este comprende las etapas de a) digestión de fosfato de roca, b) enfriamiento/cristalización, c) filtración, d) lavado de cristales, e) disolver y diluir en 1.3-1,75 kg/l en temperaturas entre 20-9 C°C f) neutralización g) adición de floculante y ajuste de la relación mol P/mol F h) decantación i) centrifugación de la fase de lodo y reciclado posible del lodo a la etapa a) j) evaporación k) particulación. El método de acuerdo con la reivindicación 4, caracterizado porque en la etapa e) el fundido se diluye a aproximadamente 1.6 kg/l a 70° C. El método de acuerdo con la reivindicación 4 o 5, caracterizado porque en la etapa g) la mol P/mol F se ajusta por encima de 0.30 preferiblemente por encima de 0.45. El método de acuerdo con la reivindicación 4, 5 o 6, caracterizado porque la decantación en la etapa h) se lleva a cabo en un tanque de decantación equipado con placas delgadas, laminillas.A method for the purification of calcium nitrate solutions or melts, characterized in that it comprises the decantation stage. The method according to claim 1, characterized in that the decantation is followed by centrifugation of the mud phase. The method according to claim 1 or 2, characterized in that the sludge is recycled by return to the step of digestion of rock phosphate. The method according to claim 1, 2, or 3, characterized in that it comprises the steps of a) rock phosphate digestion, b) cooling / crystallization, c) filtration, d) crystal washing, e) dissolving and diluting at 1.3-1.75 kg / l at temperatures between 20-9 ° C f) neutralization g) addition of flocculant and adjustment of the ratio mol P / mol F h) settling i) centrifugation of the sludge phase and possible recycling from mud to stage a) j) evaporation k) particulation. The method according to claim 4, characterized in that in step e) the melt is diluted to approximately 1.6 kg / 70 ° C. The method according to claim 4 or 5, characterized in that in stage g) the mol P / mol F is set above 0.30 preferably above 0.45. The method according to claim 4, 5 or 6, characterized in that the decantation in step h) is carried out in a settling tank equipped with thin plates, lamellae.

CO09038652A 2008-04-16 2009-04-16 CALCIUM NITRATE CO6210122A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20081853A NO332615B1 (en) 2008-04-16 2008-04-16 Method of purifying calcium nitrate solutions or melts

Publications (1)

Publication Number Publication Date
CO6210122A1 true CO6210122A1 (en) 2010-10-20

Family

ID=41218972

Family Applications (1)

Application Number Title Priority Date Filing Date
CO09038652A CO6210122A1 (en) 2008-04-16 2009-04-16 CALCIUM NITRATE

Country Status (7)

Country Link
CN (2) CN104085910A (en)
CO (1) CO6210122A1 (en)
CZ (1) CZ2009222A3 (en)
NO (1) NO332615B1 (en)
PL (1) PL220612B1 (en)
RU (1) RU2414426C2 (en)
ZA (1) ZA200901756B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2507154C1 (en) * 2012-08-14 2014-02-20 Открытое Акционерное Общество "Завод минеральных удобрений Кирово-Чепецкого химического комбината" (ОАО "ЗМУ КЧХК") Method of obtaining purified solution of calcium nitrate
CN106629805B (en) * 2016-10-17 2017-11-21 交城县三喜化工有限公司 A kind of method and its device for producing calcium nitrate liquid

Also Published As

Publication number Publication date
CN101559966A (en) 2009-10-21
ZA200901756B (en) 2010-02-24
NO20081853L (en) 2009-10-19
RU2414426C2 (en) 2011-03-20
CZ2009222A3 (en) 2010-08-11
RU2009112498A (en) 2010-10-20
PL220612B1 (en) 2015-11-30
CN104085910A (en) 2014-10-08
NO332615B1 (en) 2012-11-19
PL387815A1 (en) 2009-10-26

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