Productive practice and technology optimization of mineral processing for copper-nickel ore in Hami

Some problems,such as high flotation froth viscosity,foam overflow seriously,higher cost of flotation reagents,etc.had usually appeared on flotation practice of copper-nickel ore in Hami,Xinjiang.remarkable results have been achieved by optimization of process like maintaining coaser particles size,cancelled talc flotation in advance and adjusting flotation flowsheets,after comparatively studied physical and chemical charactietics on copper-nickle ore samples.In the meantime,measures were taked to select flotation reageats,refine of combined use and compatibility in order to recover nickle-containing intergrowth straightly.Results show that a middle to low-grade copper-nickel ore contenting high magnesium oxide is mildly oxidized,according to the comprehensive hardness coefficient of 6.7and the grindability of 1.26.Meanwhile,the sample is comprised of diffuse disseminated and loose structure.As fine mud is easy to come into being while being process and deteriorate separation environments,grinding fineness about 78 percent should be appropriate.It was successfully that high modulus of sodium silicate(modulus 3.1)instead of sodium hexametaphosphate and sodium silicate(modulus 2.7)strengthened dispersion of slurry,degree of etherification of methyl-isobutyl-carbinol(MIBC)enhanced depression of talc and high magnesium oxide minerals as well as synergistic effect was reinforced in addition to a part of new collector Y89-2and cancalled foaming agent BK-204.Production stability,economic and technical indicators ia good and economic benefitsof over twenty one million seven hundred twenty thousand yuan are gained after productive renovation.