Pan H.,Institute of Geophysical and Geochemical Exploration |
Pan H.,China Academy Geological science |
Zhou G.,Institute of Geophysical and Geochemical Exploration |
Zhou G.,China Academy Geological science |
And 9 more authors.
Journal of Geochemical Exploration | Year: 2014
Since the launch of the Nationwide Geochemical Survey and Evaluation of Mine Tailings Project in 2010, 291 drilling holes have been completed, and 9747 tailings core samples have been collected from the 26 tailings dams of 23 typical metal mining areas. Using the multi-element and multi-method technique, analyses of tailings samples from 21 tailings dams was completed. Beneficiation tests were conducted on the tailings of the Hongqilin nickel mine, Jilin.Research shows that the distribution of elements in tailings is uneven and that the complex distribution regularities are mainly controlled by gravitational separation, features of selected raw ores and beneficiation technology. By establishing a three-dimensional (3D) model for elements in tailings dams, distribution regularities and combination features of elements can be directly determined, and the amount of useful elements in tailings dams can be quantitatively evaluated. An evaluation shows that metals in most tailings dams have potential recycle value and that the resource amount of ore-forming and scattered metal elements is considerable. © 2013 Elsevier B.V.