Scholarlink

<p>A real-time on-line in situ monitoring test system composed of focused beam reflection measurement (FBRM) and easy viewer (EV) was established to study the influence of the feeding speed of tailings and the rotating speed of the scraper on the crushing and reconstruction of low-concentration tailings during flocculation. The evolution process of floc aggregation and sedimentation concentration was studied from a microscopic point of view. Based on fractal theory, the changes in floc pores and fractal dimensions were examined. The results showed that at a feed rate of 400&#xa0;mL/min and a scraper speed of 5&#xa0;rpm, the average chord length of flocs was 226.26&#xa0;µm. In the settlement zone, the maximum pore size of floc was 1235.50&#xa0;µm, the three-dimensional fractal dimension was 1.548, and the floc structure was not destroyed. In the interference zone, the maximum pore size of floc was 971.04&#xa0;µm, the three-dimensional fractal dimension of floc was 1.745, the floc grew and reconstructed rapidly. In the concentration zone, the maximum pore size of floc was 198.18&#xa0;µm, the three-dimensional fractal dimension was 1.850, and floc structure was more compact. Therefore, in the process of tailings sedimentation, the fractal dimension of floc increased with time, resulting in a dense floc.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Research on Dynamic Evolution Mechanism and Law of Low Concentration Tailings Settlement and Concentration Process

  • 期刊论文

  • 发表日期：

    2025年10月14日

查看全文
  • Hongmei Zhang,
  • Yan Wang,
  • Fusheng Niu,
  • Jinxia Zhang,
  • Song Bai,
  • Lijun Chen

摘要

A real-time on-line in situ monitoring test system composed of focused beam reflection measurement (FBRM) and easy viewer (EV) was established to study the influence of the feeding speed of tailings and the rotating speed of the scraper on the crushing and reconstruction of low-concentration tailings during flocculation. The evolution process of floc aggregation and sedimentation concentration was studied from a microscopic point of view. Based on fractal theory, the changes in floc pores and fractal dimensions were examined. The results showed that at a feed rate of 400 mL/min and a scraper speed of 5 rpm, the average chord length of flocs was 226.26 µm. In the settlement zone, the maximum pore size of floc was 1235.50 µm, the three-dimensional fractal dimension was 1.548, and the floc structure was not destroyed. In the interference zone, the maximum pore size of floc was 971.04 µm, the three-dimensional fractal dimension of floc was 1.745, the floc grew and reconstructed rapidly. In the concentration zone, the maximum pore size of floc was 198.18 µm, the three-dimensional fractal dimension was 1.850, and floc structure was more compact. Therefore, in the process of tailings sedimentation, the fractal dimension of floc increased with time, resulting in a dense floc.