留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
数据统计

分享

计量
  • 文章访问数:  392
  • HTML全文浏览量:  184
  • PDF下载量:  50
  • 被引次数: 0
Huazhe Jiao, Weilin Chen, Aixiang Wu, Yang Yu, Zhuen Ruan, Rick Honaker, Xinming Chen, and Jianxin Yu, Flocculated unclassified tailings settling efficiency improvement by particle collision optimization in the feedwell, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2402-3
Cite this article as:
Huazhe Jiao, Weilin Chen, Aixiang Wu, Yang Yu, Zhuen Ruan, Rick Honaker, Xinming Chen, and Jianxin Yu, Flocculated unclassified tailings settling efficiency improvement by particle collision optimization in the feedwell, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2402-3
引用本文 PDF XML SpringerLink
  • Research Article

    Flocculated unclassified tailings settling efficiency improvement by particle collision optimization in the feedwell

    + Author Affiliations
    • Efficient thickening of tailings is a prerequisite for the metal mine tailings backfill and surface disposal operation. The effective collision of ultrafine tailings particles in suspension with flocculant molecules is essential for flocs aggregates formation and settling. Unreasonable feeding speed and flocculant adding method will lead to the failure of effective dispersion of flocculant and high particle content in thickener overflow. In this work, the effects of turbulence intensity and flocculant adding method on floc size, strength and movement characteristics are analysed. Aiming to solve the turbidity increased problem, a pilot-scale continuous thickening test was carried out. Taking a single particle and multiple flocs of full tailings as the research object, the particle iterative settlement model and the Diffusion Limited Aggregation (DLA) model of flocs were established respectively. The influence of turbulence intensity on collision effect is studied by tracking and simulating particle trajectory. The results show that in the process of single particle settlement, chaos appears in the iterative process owing to particle adhesion which caused by micro action. When the turbulence intensity is 25.99%, the maximum particle size of tailings floc is 6.21mm and the maximum sedimentation rate is 5.284 cm/s. The tailings floc presents a multi-scale structure of particle-force chain system when hindered settling, and the interweaving of strong and weak force chains constitutes the topological structure of particles. The results were applied to a thicker in plant, the flocculant addition mode and feed rate were optimized, and the flocs settling speed and overflow clarity were improved.

    • loading

    Catalog

      通讯作者: 陈斌, bchen63@163.com
      • 1. 

        沈阳化工大学材料科学与工程学院 沈阳 110142

      1. 本站搜索
      2. 百度学术搜索
      3. 万方数据库搜索
      4. CNKI搜索

    • /

      返回文章
      返回