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DVOŘÁK, K. FRIDRICHOVÁ, M. GAZDIČ, D.
Originální název
Gypsum dehydration to Alpha-gypsum in mixed chloride solutions
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
Brno University of Technology solves in the long term the problem of alpha gypsum preparation by dehydrating the gypsum in the solution of chloride salts. This study verified that alpha-gypsum can be trouble free prepared by gypsum dehydration in solution of a number chloride salts, among others CaCl2, MgCl2 or NaCl. In the same time it was found that owing to the different electro-chemical behavior of Potassium ions, the by heat conditioned reaction of gypsum with the KCl solution the dehydration doesnt take place, but a partial substitution of Potassium ions by Calcium ions takes place. The product of this reaction is the mineral görgeyit, K2SO4.5CaSO4.H2O.This important problem was solved by reduction of the extremely electrochemical high mobility of Potassium ions by the method of the mixed chloride solution with Potassium and Sodium ions, the mobility of which is in comparison with the preceding only one third. Samples of hemihydrate in the solution of mixed salts were prepared and tested in conclusion of the research.
Klíčová slova
Alpha gypsum, gorgeyte
Autoři
DVOŘÁK, K.; FRIDRICHOVÁ, M.; GAZDIČ, D.
Rok RIV
2012
Vydáno
24. 1. 2012
Nakladatel
Trans Tech Publications, Switzerland
Místo
ICAMEM 2011
ISSN
1022-6680
Periodikum
Advanced Materials Research
Ročník
457
Číslo
1
Stát
Švýcarská konfederace
Strany od
391
Strany do
394
Strany počet
4
BibTex
@article{BUT88959, author="Karel {Dvořák} and Marcela {Fridrichová} and Dominik {Gazdič}", title="Gypsum dehydration to Alpha-gypsum in mixed chloride solutions", journal="Advanced Materials Research", year="2012", volume="457", number="1", pages="391--394", issn="1022-6680" }