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首页> 外文会议>International Mineral Processing Congress >Application of Hydrocyclone Classified Thickening Process in Tailings Dehydration of Beiminghe Iron Mine
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Application of Hydrocyclone Classified Thickening Process in Tailings Dehydration of Beiminghe Iron Mine

机译：水力旋流器分级增稠工艺在北明河铁矿尾矿脱水中的应用

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The surficial collapse pits of the mining areas are continuously spreading in Beiminghe iron mine of Hebei Province as a result of the exploitation, which has done a lot of damage to the circumjacent ecological environment of the mine. It is a new path to handle the mine tailings at the present time that the thickened tailings are used to backfill the collapse pits, in which way the problems of the surficial collapse and the nowhere discharge of the tailings are both solved, and the rational utilization of the mine tailings and the clean production of the mine enterprise are realized.The-200 mesh content of the tailings of Beiminghe iron mine is 76.87%, and-325 mesh content is 63.50%. Semi-industrial dehydration experiments to the tailings have been done using the hydrocyclone classified thickening process. The results show that when FXI25 hydrocyclone is adopted,the concentration of underflow can achieve 73.31%, and the yield ratio is 61.78%; when FX150 hydrocyclone is adopted, the concentration of underfiow is 70.57%, and the yield ratio is 54.31%,which indicate that the minor diameter hydrocyclone is propitious to improve the yield ratio of the underflow.The semi-industrial dehydration system of hydrocyclone classified thickening process is composed of FXI25 hydrocyclone, D3600 high-efficient thickener and D2000 thickening bucket. The capacity to tailings disposal can achieve 3.07t/h and the tailings can be thickened from 28.86% to 62.45%.Compared with the traditional thickening-fdtrating process and the total tailings directly filtrating process, the hydrocyclone classified thickening process has the merits of simple flow and high thickening efficiency, so it is easy to be realized in the mine.
机译：开采的结果是，河北省北明河铁矿开采区表层塌陷坑不断散布，对矿山周围的生态环境造成了很大破坏。增稠的尾矿用于回填塌陷坑是目前处理矿山尾矿的一条新途径，既解决了表层塌陷问题，又解决了尾矿无处排放的问题，并合理利用。北明河铁矿的尾矿的-200目含量为76.87％，-325目的含量为63.50％。使用水力旋流器分级增稠工艺对尾矿进行了半工业脱水实验。结果表明，采用FXI25水力旋流器，底流浓度可达到73.31％，产率为61.78％。采用FX150水力旋流器时，水流浓度为70.57％，产率为54.31％，表明小直径水力旋流器有利于提高底流的产率。该工艺由FXI25水力旋流器，D3600高效增稠剂和D2000增稠桶组成。尾矿处理能力可达到3.07t / h，尾矿可从28.86％增至62.45％。与传统的增稠-精矿工艺和全部尾矿直接过滤工艺相比，水力旋流器分级增稠工艺具有简单易行的优点。流量大，增稠效率高，因此在矿山中很容易实现。

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