Alkali metal nitrate purification

Patent · Tue Feb 04 00:00:00 EST 1986

OSTI ID:7246875

Fiorucci, L C; Morgan, M J

A process is disclosed for removing contaminants from impure alkali metal nitrates containing them. The process comprises heating the impure alkali metal nitrates in solution form or molten form at a temperature and for a time sufficient to effect precipitation of solid impurities and separating the solid impurities from the resulting purified alkali metal nitrates. The resulting purified alkali metal nitrates in solution form may be heated to evaporate water therefrom to produce purified molten alkali metal nitrates suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of purified alkali metal nitrates.

• Assignee: Olin Corp., Cheshire, CT (United States)
• Patent Number(s): US 4568352; A
• Application Number: CNN: 84-3878; PPN: US 6-613667
• OSTI ID: 7246875
• Resource Relation: Patent File Date: 24 May 1984
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
42 ENGINEERING
ALKALI METAL COMPOUNDS
PURIFICATION
HEAT TRANSFER FLUIDS
FABRICATION
NITRATES
PRECIPITATION
FLUIDS
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
400105* - Separation Procedures
420400 - Engineering- Heat Transfer & Fluid Flow