DEHYDRATION OF CALCIUM-SULFATE HEMIHYDRATE IN THE SYNTHESIS OF EXTRACTION PHOSPHORIC-ACID BY THE DIHYDRATE-HEMIHYDRATE METHOD FROM KHIBINY APATITE

Authors
GRINEVICH AV VOLKOVA VV
Citation
Av. Grinevich et Vv. Volkova, DEHYDRATION OF CALCIUM-SULFATE HEMIHYDRATE IN THE SYNTHESIS OF EXTRACTION PHOSPHORIC-ACID BY THE DIHYDRATE-HEMIHYDRATE METHOD FROM KHIBINY APATITE, Russian journal of applied chemistry, 66(9), 1993, pp. 1602-1604
Citations number
5
Categorie Soggetti
Chemistry Applied
Journal title
Russian journal of applied chemistry → ACNP
ISSN journal
10704272
Volume
66
Issue
9
Year of publication
1993
Part
2
Pages
1602 - 1604
Database
ISI
SICI code
1070-4272(1993)66:9<1602:DOCHIT>2.0.ZU;2-T
Abstract
The dynamics of successive phase transformations of gypsum into hemihy drate and anhydrite in phosphoric-sulfuric acid solutions containing 2 3-26% P2O5 and 4-10% H2SO4 at 95-degrees-C has been studied under cond itions of the production of extraction phosphoric acid by the dihydrat e-hemihydrate method from Khibiny apatite.