Abstract:Aiming at the adverse effect of high content of fine mud on the ore beneficiation index of a copper sulfide ore in Chengde, an exploratory test was carried out on the method of removing mud and the treatment method of copper ore separation. Through comparative tests of flotation desilting, physical desilting, two-stage mud mixed treatment, and two-stage mud separate treatment with foaming agent added, the determined process is flotation desilting with the first stage coarse grinding and foaming agent added. After re-grinding, the 38 μm graded physical desliming is used to obtain the first sludge, the second sludge of ?38 μm, and the second slug of +38 μm. The copper concentrate grade was 18.023%, and the recovery rate was 78.594%.