Application of Hydrocyclone Classified Thickening Process in Tailings Dehydration of Beiminghe Iron Mine
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.
Beiminghe iron mine Classification thickening Hydrocyclone
X. Q. Cui X. J. Lu P. Chen S. G. Hu L. J. Sun S. Zhang F. F. Yang
College of Chemical and Environmental Engineering of SDUST, Qingdao, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2139-2143
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）