Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 32: Issue 4
Mechanism of reactions in mixtures of calcium polyphosphate with apatite and accompanying minerals during heating
Authors:
M. Veiderma Fertilizer Technology Laboratory Tallinn Polytechnic Institute 200026 Tallinn Estonian S.S.R., U.S.S.R.

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M. Pyldme Fertilizer Technology Laboratory Tallinn Polytechnic Institute 200026 Tallinn Estonian S.S.R., U.S.S.R.

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K. Tynsuaadu Fertilizer Technology Laboratory Tallinn Polytechnic Institute 200026 Tallinn Estonian S.S.R., U.S.S.R.

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K. Utsal Fertilizer Technology Laboratory Tallinn Polytechnic Institute 200026 Tallinn Estonian S.S.R., U.S.S.R.

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Pages:
1093–1103
Online Publication Date:
22 Jul 2005
Publication Date:
01 Jul 1987
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01905164
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The thermal interaction of Kovdor apatite, calcite, dolomite and forsterite with calcium polyphosphate up to 1200 °C were studied by chemical, thermal (under dynamic and quasiisothermal and isobaric conditions), X-ray, electronmicroscopic and chromatographic methods. It was found that the accompanying minerals of apatite react with calcium polyphosphate at lower temperature in comparison with apatite, complicating the process of thermal defluorination of papatite.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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