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Preparation of ceramsite from lead-zinc tailings and coal gangue: Physical properties and solidification of heavy metals by Zhongtao Luo; Jinyang Guo; Xiaohai Liu; Yuandong Mu; Meixiang Zhang; Meng Zhang; Chongfei Tian; Jiahui Ou; Jie Mi is a Engineering article available to read on EtoBox.
What is Preparation of ceramsite from lead-zinc tailings and coal gangue: Physical properties and solidification of heavy metals about?
Lead-zinc tailings (LZT) are hazardous solid wastes that threaten the environment safety and human health. As a bulk solid waste, coal gangue (CG) also caused pollution. This paper studied the feasibility of using a combination of LZT and CG to produce ceramsite and realizing the solidification of heavy metals. The physical properties of ceramsite were evaluated, and the phase composition and microstructure were analyzed by XRD and SEM-EDS, respectively. The results showed that when the LZT content was <30 wt%, LZT and CG could be used for the preparation of ceramsite, and the prepared ceramsite met the requirements of environmental safety. Proportion of raw materials and sintering temperature affected physical properties of ceramsite. With the increase of LZT content, the apparent density, and the compressive strength of ceramsite first decreased and then increased. The increase of sintering temperature from 1150 • C to 1250 • C reduced the apparent density and the compressive strength of ceramsite. Moreover, the presence of Pb and Zn decreased the apparent density, the compressive strength, and the water absorption of the ceramsite. The valence of Pb and Zn remained as Pb 2+ and
Who reads Preparation of ceramsite from lead-zinc tailings and coal gangue: Physical properties and solidification of heavy metals?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Zhongtao Luo; Jinyang Guo; Xiaohai Liu; Yuandong Mu; Meixiang Zhang; Meng Zhang; Chongfei Tian; Jiahui Ou; Jie Mi
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)