期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：4
页码：042033
DOI：10.1088/1755-1315/199/4/042033
语种：English
出版社：IOP Publishing
摘要：In order to investigate the pollution behavior during the preparation of lightweight ceramsite from yellow phosphorus slag, the migration and transformation of the P-, S-, F-, and As-containing species in the heating system were simulated and calculated by FactSage 7.1 thermochemical software and databases. The results show that the P in the solid of Ca10(PO4)6F2 is transformed to solid Fe3P and a small amount of gaseous (P2O3)2. The S-containing gaseous pollutants (CS2, S2, PS and COS) start to appear, while a large amount of S remains in the solid phase of CaS. A small amount of F is released in the form of SiF4, and all As exists in gaseous products. At temperatures ranging from 100-1100°C, P, S, F, and As elements cannot be transformed into the slag phase.
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