PROCESS FOR PREPARING POTASSIUM NITRATE

The invention relates to a process for preparing potassium nitrate by reacting industrial potassium chloride and calcium nitrate. The reaction take place at the temperature of 25...40°C, in an aqueous medium, for 30...60 min, with potassium nitrate final separation at -2°C and calcium chloride remov...

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Bibliographische Detailangaben
Hauptverfasser:	DOCA ION, MIU ION, MOCIOACA GABRIELA, POPA OLIVIU
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY
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Beschreibung
Zusammenfassung:	The invention relates to a process for preparing potassium nitrate by reacting industrial potassium chloride and calcium nitrate. The reaction take place at the temperature of 25...40°C, in an aqueous medium, for 30...60 min, with potassium nitrate final separation at -2°C and calcium chloride removal using calcium oxide, at a mole ratio CaO : CaCl2 of 3.1...3.4, when a mixture of complexes is formed. Invenţia se referă la un procedeu de obţinere a azotatului de potasiu prin reacţia dintre clorura de potasiu tehnică şi azotatul de calciu. Reacţia se desfăşoară la temperatura de 25...40°C, timp de 30...60 min, în mediu apos, cu separarea finală a azotatului de potasiu la -2°C şi eliminarea clorurii de calciu cu ajutorul oxidului de calciu, la un raport molar CaO:CaClde 3,1...3,4 când se formează un amestec de complecşi.