In order to provide bases for parameters selection of stability analysis in Jinchuan nickel mine,which is one of the largest bases of metal resources,nonlinear elastoplastic finite element method is used for the sensitivity analysis of four mechanical parameters to the deformation of surrounding rocks of a tunnel in Jinchuan deposit Ⅱ.

Most of flotation tailings of Chuantou gold deposit in Luoyang are belong the primary ore of inclusion type in low grade with fine grained particles and wrapper taye.

Research Progresses on Removal of MgO from the Flotation Concentrate of Jinchuan Copper-Nickel Sulfide;