PL409814A1 - Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions - Google Patents

Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions

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Publication number
PL409814A1
PL409814A1 PL409814A PL40981414A PL409814A1 PL 409814 A1 PL409814 A1 PL 409814A1 PL 409814 A PL409814 A PL 409814A PL 40981414 A PL40981414 A PL 40981414A PL 409814 A1 PL409814 A1 PL 409814A1
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PL
Poland
Prior art keywords
solution
carbonate
magnesium carbonate
suspension
filtration
Prior art date
Application number
PL409814A
Other languages
Polish (pl)
Other versions
PL229861B1 (en
Inventor
Jacek Szczerba
Leszek Urbańczyk
Wiesław Wantuch
Jerzy Lis
Marcin Figura
Dominika Madej
Maria Majka-Wantuch
Agnieszka Kurzańska
Original Assignee
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Zakłady Magnezytowe ROPCZYCE Spółka Akcyjna
Alwernia Spółka Akcyjna
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.)
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Publication date
Application filed by Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie, Zakłady Magnezytowe ROPCZYCE Spółka Akcyjna, Alwernia Spółka Akcyjna filed Critical Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Priority to PL409814A priority Critical patent/PL229861B1/en
Publication of PL409814A1 publication Critical patent/PL409814A1/en
Publication of PL229861B1 publication Critical patent/PL229861B1/en

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Abstract

Sposób równoczesnego otrzymywania roztworu azotanu sodu i zasadowego węglanu magnezu, realizowanego w reakcji wymiany pomiędzy węglanem sodu i azotanem magnezu, otrzymywanym w znanym procesie rozkładu magnezytów w formie węglanowej lub tlenkowej kwasem azotowym charakteryzuje się tym, że stężony wodny roztwór azotanu magnezu, zawierający 37 do 42% masowych Mg(NO3)2 i o pH wynoszącym 5,5 do 6,5, rozcieńcza się do stężenia 17 do 21% masowych Mg(NO3)2, a wytrącone w trakcie rozcieńczania zanieczyszczenia oddziela się od roztworu w drodze filtracji. Następnie do oczyszczonego roztworu azotanu magnezu poddawanego mieszaniu wprowadza się stałym strumieniem przez okres 30 do 120 minut zawiesinę sody kalcynowanej, a otrzymaną zawiesinę od momentu zakończenia dozowania sody miesza się jeszcze przez okres 60 do 120 minut, po czym zawiesinę poddaje się procesowi filtracji, otrzymując czysty roztwór azotanu sodu oraz osad w postaci zasadowego węglanu magnezu, który poddaje się przemywaniu, przy czym filtrat stanowi czysty roztwór azotanu sodu. Operacje rozcieńczania, strącania i filtracji przeprowadza się w temperaturze otoczenia.The method of simultaneous preparation of a solution of sodium nitrate and basic magnesium carbonate, carried out in the exchange reaction between sodium carbonate and magnesium nitrate, obtained in the known process of magnesite decomposition in the form of carbonate or oxide nitric acid is characterized by the fact that a concentrated aqueous solution of magnesium nitrate containing 37 to 42 The mass% of Mg (NO3) 2 and with a pH of 5.5 to 6.5 are diluted to a concentration of 17 to 21 mass% of Mg (NO3) 2, and the impurities deposited during dilution are separated from the solution by filtration. Then, to the purified magnesium nitrate solution subjected to stirring, a soda ash suspension is introduced in a constant stream for a period of 30 to 120 minutes, and the suspension obtained from the moment of soda dispensing is stirred for a further 60 to 120 minutes, after which the suspension is subjected to a filtration process, obtaining a pure a sodium nitrate solution and a precipitate in the form of basic magnesium carbonate, which is washed, the filtrate being a pure sodium nitrate solution. Dilution, precipitation and filtration operations are carried out at ambient temperature.

PL409814A 2014-10-16 2014-10-16 Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions PL229861B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL409814A PL229861B1 (en) 2014-10-16 2014-10-16 Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL409814A PL229861B1 (en) 2014-10-16 2014-10-16 Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions

Publications (2)

Publication Number Publication Date
PL409814A1 true PL409814A1 (en) 2016-04-25
PL229861B1 PL229861B1 (en) 2018-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL409814A PL229861B1 (en) 2014-10-16 2014-10-16 Method for simultaneous obtaining of sodium nitrite and magnesium carbonate solutions

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PL (1) PL229861B1 (en)

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Publication number Publication date
PL229861B1 (en) 2018-08-31

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