晶质石墨浮选柱机联合与常规流程对比研究OA

Crystalline graphite ore is an important non-metallic mineral resource in China.During the flotation en-richment process,the flake is damaged due to factors such as the large number of regrinding operations.The original grade of crystalline graphite ore in a certain area of Luobei is 11.37％,which belongs to fine flake graphite ore.In order to improve the content of flake in the cleaner operation,the comparative and continuous flotation experiment was carried out using the flotation column-flotation machine combined process and the entire flotation machine process for the cleaner operation.The processing capacity and reagent system of the two processes are the same,and under the premise of equivalent fixed carbon content and fixed carbon recovery rate of the concentrate,the+0.15 mm particle size yield of the column-machine combined process has increased by 1.05 percentage points.The column-machine process reduces one stage of flotation and one stage of grinding compared to the entire machine process cleaner opera-tion.The reduction in the number of grinding options is the key factor in protecting the flake.In addition to improving the flake yield,the column machine process also has significant advantages in operating energy consumption and main-tenance costs for flotation columns.Therefore,it is expected to achieve industrial applications in the flotation of crys-talline graphite.