Method to improve acidulation quality of North Carolina phosphat

Details Method to improve acidulation quality of North Carolina phosphat Method to improve acidulation quality of North Carolina phosphat

1984-12-13

1985-12-10

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

C01B 2516

Patent

active

045579091

ABSTRACT:
Phosphate rock is heated under controlled conditions to essentially eliminate organic impurities and sulfides from the rock and subsequently leached with water to substantially increase the porosity and surface area of the calcined solid and remove any traces of sulfide still remaining in the calcine. This process yields an improved calcined product rendered more suitable for acidulation to wet-process phosphoric acid and is beneficial for apatitic phosphate rocks possessing a moderate to high content of organic impurities and a high degree of carbonate substitution in the apatite crystal lattice.

REFERENCES:
patent: 3995987 (1976-12-01), MacAskill
patent: 4017585 (1977-04-01), Angevine et al.
patent: 4321238 (1982-03-01), Henin
patent: 4325928 (1982-04-01), Lowe
patent: 4389380 (1983-06-01), Parks

Affiliated with

Also associated with

Rating

Method to improve acidulation quality of North Carolina phosphat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method to improve acidulation quality of North Carolina phosphat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to improve acidulation quality of North Carolina phosphat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-58222