Research status and prospect of thickening technology for metal tailings

被引：0
|
作者：
Wang H.-J. [1 ,2 ]
Peng Q.-S. [1 ]
Yang Y. [1 ,3 ]
Guo J.-B. [1 ]
机构：
[1] School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing
[2] Key Laboratory of High Efficient Mining and Safety of Metal Mines (Ministry of Education), University of Science and Technology Beijing, Beijing
[3] JCHX Mining Management Co., Ltd., Beijing
来源：
Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2022年 / 44卷 / 06期
关键词：
Dehydration process; Metal ore; Numerical simulation; Tailings; Thickening equipment; Thickening theory;
D O I：
10.13374/j.issn2095-9389.2021.01.11.001
中图分类号：
学科分类号：
摘要：
In recent years, paste technology has been rapidly promoted in domestic mines. It is a key technology for realizing green mining because it can effectively solve environmental and safety problems caused by mining. With the progress in science and technology, the research level of paste technology is constantly improving. Thickening technology of tailings is the primary procedure of paste backfill technology in metal mines, which can significantly improve the efficiency of tailings dewatering and utilization rate of tailings. Tailings thickening technology is an important part of the green development of mines. This paper presented a summary of the development process of tailings thickening and dewatering technology, dividing the development stage of the thickener into three: (1) ordinary thickener stage, (2) high-efficiency thickener stage, and (3) paste thickener stage. The application status of the thickening process of tailings and several typical application cases at home and abroad were also described. In addition, this paper explored different theories, including the single flocculation theory, multiple flocculation theory, bed compression theory under static/dynamic compression, and gravity thickening theory, along with the corresponding latest research progress of each theory. This paper also presented the main research methods of thickening of tailings, namely the static settlement experiment, small-scale thickening experiment, and semi-industrial thickening experiment. Advanced observational methods such as focused beam reflection measurement technology (FBRM) and particle video microscope technology (PVM) were also introduced. Moreover, the paper expounded on the research status of numerical simulation of tailings thickening technology and highlighted that the tailings thickening and dewatering technology is still in the development stage with some underlying problems, such as the instability of the key parameters of tailings thickening, the untimely production control of tailings thickening, and the imperfect information platform of tailings thickening. Overall, the development of tailings thickening technology is still facing numerous challenges. Finally, the direction of the development of tailing thickening technology is proposed in terms of personalization, automation, and intelligence. Copyright ©2022 Chinese Journal of Engineering. All rights reserved.
引用
收藏
页码：971 / 980
页数：9
相关论文
共 62 条
  • [1] Cheng H Y., Characteristics of Rheological Parameters and Pipe Resistance under the Time-Temperature Effect, (2018)
  • [2] Li G C., Study on Size Change of Unclassified Tailings Flocs and Its Thickening Performance, (2019)
  • [3] Ma C X, Qin H L., On the dam stability of the tailing pond based on the analysis on the seepage stability, Ind Saf Environ Prot, 34, 9, (2008)
  • [4] Jiangsu, Lu H, Cao R X, Et al., Pollution evaluation of heavy metal in soils of an iron mine's tailing reservoir and its surrounding region, Environ Sci Technol, 37, (2014)
  • [5] Wang X L, Yao W X, Wang H, Et al., The directions of R & D on backfill with waste rock and total tailings in underground mine, China Min Mag, 20, 9, (2011)
  • [6] Concha F, Burger R., Thickening in the 20th century: A historical perspective, Min Metall Explor, 20, 2, (2003)
  • [7] Concha F, Burger R., A century of research in sedimentation and thickening, KONA Powder Part J, 20, (2002)
  • [8] Zhan H H, Luo Y W., Research on flocculation setting of high density fine particle coal slurry, Coal Sci Technol, 35, 2, (2007)
  • [9] Chen S W, Tong K W, Ma Z S, Et al., High efficiency thickener-Current status and application prospects, Met Mine Des Constr, 1, (1997)
  • [10] Ruan Z E, Wu A X, Wang Y M, Et al., Effect of flocculation sedimentation on the yield stress of thickened ultrafine tailings slurry, Chin J Eng, 43, 10, (2021)
1234567