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Solidification/stabilization of chromite ore processing residue via co-sintering with hazardous waste incineration residue

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Abstract

In order to realize the harmless and resource disposal of hazardous waste incineration residue (HWIR) and chromite ore processing residue (COPR), this paper prepares glass–ceramics by HWIR. The COPR was co-sintered with the base glass of HWIR to realize the solidification and stabilization of COPR. The results shown that the single-stage sintering method has a simple process and low energy consumption, while the two-stage sintering method has better mechanical properties. Chromium in COPR may be solidified/stabilized by physical encapsulation and chemical fixation. When the content of COPR reaches 50%, the leaching concentration of Cr and Cr(VI) in the solidified body of HWIR solidified COPR (IRSC) is less than 5 mg/L, which satisfies the US EPA and CN GB5085.3 standard limits. This study achieves waste control by waste and prepares solidified bodies (IRSC) with good mechanical properties, chemical corrosion resistance, and low leaching concentration of heavy metals, which provides feasibility for its engineering application.

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Funding

This study was sponsored by general program of State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University (No. 2011DA105287-MS202121) and Graduate Research and Innovation Foundation of Chongqing, China (grant number: CYB22025).

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Pengpeng Zhang: investigation, formal analysis, writing-original draft. Linghao Zeng: validation, formal analysis. Shihao Zhang: writing-review and editing. Chuanwei Li: resources, validation. Dongwei Li: project administration, supervision.

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Correspondence to Dongwei Li.

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The authors declare no competing interests.

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Zhang, P., Zeng, L., Zhang, S. et al. Solidification/stabilization of chromite ore processing residue via co-sintering with hazardous waste incineration residue. Environ Sci Pollut Res 30, 29392–29406 (2023). https://doi.org/10.1007/s11356-022-24318-5

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  • DOI: https://doi.org/10.1007/s11356-022-24318-5

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