Detoxification and immobilization of chromite ore processing residue in spinel-based glass-ceramic
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- 作者：Chang-Zhong Liaoa ; b ; Yuanyuan Tangc ; Po-Heng Leee ; Dr. Chengshuai Liua ; d ; csliu@soil.gd.cn" class="auth_mail" title="E-mail the corresponding author ; Dr. Kaimin Shihb ; kshih@hku.hk" class="auth_mail" title="E-mail the corresponding author ; Fangbai Lia
- 关键词：Detoxification ; Immobilization ; Chromite ore processing residue (COPR) ; Glass-ceramic ; Rietveld quantitative XRD
- 刊名：Journal of Hazardous Materials
- 出版年：2017
- 出版时间：5 January 2017
- 年：2017
- 卷：321
- 期：Complete
- 页码：449-455
- 全文大小：1877 K
文摘
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COPR was detoxified and immobilized in a spinel-based glass-ceramic matrix.
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Cr-rich crystalline phase was determined to be MgCr1.32Fe0.19Al0.49O4 spinel.
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The partitioning ratio of Cr into spinel in the glass-ceramic can be up to 77%.
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No Cr(VI) was observed after conversion of COPR into a glass-ceramic.
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TCLP results demonstrate the superiority of the final product in immobilizing Cr.