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
收藏
页码：1699 / 1705
页数：7
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