Process of refining sodium hexafluorosilicate

Details Process of refining sodium hexafluorosilicate Process of refining sodium hexafluorosilicate

1978-01-31

1979-07-17

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Halogen containing

423155, 423184, 423202, C01B 3310

Patent

active

041615115

ABSTRACT:
Crude sodium hexafluorosilicate containing gypsum and various metal phosphates is refined into highly pure and sufficiently large crystals. First, the crude fluorosilicate is treated with a sodium chloride solution to dissolve gypsum. Then the solid phase is reconstituted into an aqueous slurry in which the concentration of Na is limited. This slurry is acidified and maintained at temperatures not lower than 80.degree. C. with continued stirring to cause recrystallization of sodium hexafluorosilicate.

REFERENCES:
patent: 2954275 (1960-09-01), Carothers et al.
patent: 3055733 (1962-09-01), Lang et al.
patent: 3607016 (1971-09-01), Barilli
patent: 3795728 (1974-03-01), Scheel
patent: 3915659 (1975-10-01), Kadotani et al.
patent: 4060586 (1977-11-01), Sardisco et al.

Affiliated with

Also associated with

Rating

Process of refining sodium hexafluorosilicate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of refining sodium hexafluorosilicate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of refining sodium hexafluorosilicate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-317463