INVESTIGATION OF PHASE-TRANSFORMATIONS IN THERMAL-PROCESSING OF PHOSPHATE ROCK

被引：4

作者：

PYLDME, M

UTSAL, K

ARUVALI, J

ARNOLD, M

PAULIK, F

机构：

[1] TARTU TECH UNIV, TARTU, ESTONIA, USSR

[2] TECH UNIV BUDAPEST, INST GEN & ANALYT CHEM, H-1521 BUDAPEST, HUNGARY

[3] HUNGARIAN ACAD SCI, TECH ANAL RES GRP, H-1361 BUDAPEST 5, HUNGARY

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1990年 / 36卷 / 05期

关键词：

D O I：

10.1007/BF01913416

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The reaction mechanism of the hydrothermal sintering processing of hydroxyfluorapatite (HFA) was studied. Samples from an industrial rotary kiln and laboratory-made samples were investigated by thermal, X-ray and chemical analysis. It was found that HFA decomposes by a solid-solid reaction with Ca-Mg-phosphates and by interaction with fused clinker. Apatite decomposition is not accompanied by fluorine evaporation; it merely creates the main precondition for fluorine evolution from clinker.

引用

页码：1699 / 1705

页数：7

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