Zhongqun Guo, Xi Cao
Ion-adsorbed rare earth mining generates extensive tailings sites with compromised structural integrity and heavy metal contamination. This study employed microbially induced carbonate precipitation (MICP) with Sporosarcina pasteurii to solidify and stabilize ion-adsorbed rare-earth tailings. The effects of treatment method, cementation solution (CS) concentration, and heavy metal contamination level on strength characteristics and heavy metal leaching behavior were investigated. Results showed that the unconfined compressive strength (UCS) of samples treated by cyclic grout immersion correlated positively with calcium carbonate (CaCO3) content, reaching a maximum of 770 kPa at 1.00 mol/L CS. Surface CaCO3 content increased with heavy metal concentration, while average CaCO3 content initially increased, then decreased with rising CS concentration. MICP treatment significantly reduced heavy metal leaching.
@article{0377db4f-7832-4113-9e3d-1fc3f8fa5dd2,
title={2026 Guo Stabilized rare earth tailings leaching characteristics},
author={Zhongqun Guo and Xi Cao},
year={2026},
language={en}
}TY - JOUR TI - 2026 Guo Stabilized rare earth tailings leaching characteristics AU - Zhongqun Guo AU - Xi Cao PY - 2026 LA - en ER -
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