Detoxification and immobilization of chromite ore processing residue in spinel-based glass-ceramic
Abstract
COPR was detoxified and immobilized in a spinel-based glass-ceramic matrix. Cr-rich crystalline phase was determined to be MgCr1.32Fe0.19Al0.49O4 spinel. The partitioning ratio of Cr into spinel in the glass-ceramic can be up to 77%. No Cr(VI) was observed after conversion of COPR into a glass-ceramic. TCLP results demonstrate the superiority of the final product in immobilizing Cr.
- Publication:
-
Journal of Hazardous Materials
- Pub Date:
- January 2017
- DOI:
- Bibcode:
- 2017JHzM..321..449L
- Keywords:
-
- Detoxification;
- Immobilization;
- Chromite ore processing residue (COPR);
- Glass-ceramic;
- Rietveld quantitative XRD