Alkali metal nitrate purification

Patent · Tue Feb 04 00:00:00 EST 1986

OSTI ID:865755

Fiorucci, Louis C ^[1]; Morgan, Michael J ^[2]

---

1. Hamden, CT
2. Guilford, CT

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.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: 84-3878
• Assignee: Olin Corporation (Cheshire, CT)
• Patent Number(s): US 4568352
• Application Number: 06/613,667
• OSTI ID: 865755
• Country of Publication: United States
• Language: English

Related Subjects

alkali
metal
nitrate
purification
process
disclosed
removing
contaminants
impure
nitrates
containing
comprises
heating
solution
form
molten
temperature
time
sufficient
effect
precipitation
solid
impurities
separating
resulting
purified
heated
evaporate
water
therefrom
produce
suitable
heat
transfer
medium
desired
granulated
cooled
discrete
particles
purified molten
removing contaminants
molten form
metal nitrates
solid particles
time sufficient
alkali metal
heat transfer
process comprises
molten alkali
transfer medium
comprises heating
metal nitrate
water therefrom
solid particle
solution form
nitrates containing
form discrete
impure alkali
/23/252/