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Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature
Joint Authors
Zhang, Fengsong
Xing-run, Wang
Yan-xia, Zhang
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
To investigate the effect of sintering temperature and sintering time on arsenic volatility and arsenic leaching in the sinter, we carried out experimental works and studied the structural changes of mineral phases and microstructure observation of the sinter at different sintering temperatures.
Raw materials were shaped under the pressure of 10 MPa and sintered at 1000~1350°C for 45 min with air flow rate of 2000 mL/min.
The results showed that different sintering temperatures and different sintering times had little impact on the volatilization of arsenic, and the arsenic fixed rate remained above 90%; however, both factors greatly influenced the leaching concentration of arsenic.
Considering the product’s environmental safety, the best sintering temperature was 1200°C and the best sintering time was 45 min.
When sintering temperature was lower than 1000°C, FeAsS was oxidized into calcium, aluminum, and iron arsenide, mainly Ca3(AsO4)2 and AlAsO4, and the arsenic leaching was high.
When it increased to 1200°C, arsenic was surrounded by a glass matrix and became chemically bonded inside the matrix, which lead to significantly lower arsenic leaching.
American Psychological Association (APA)
Xing-run, Wang& Zhang, Fengsong& Yan-xia, Zhang. 2014. Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048946
Modern Language Association (MLA)
Xing-run, Wang…[et al.]. Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1048946
American Medical Association (AMA)
Xing-run, Wang& Zhang, Fengsong& Yan-xia, Zhang. Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048946
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048946