枣阳低品位复杂金红石矿的浮选分离及与辛基羟肟酸相互作用机理

he flotation separation of rutile ore in Zaoyang was investigated by raw ore experiments and pure mineral tests. The mechanism of rutile with octyl hydroxamic acid (OHA) as collector was further studied by Zeta potential measurement and Infrared spectrum measurement. Raw ore experiment results indicate that rutile can be recycled effectually by using C5~9 hydroxamic acid as collector. The rutile grading of flotation concentrate can reach to 43.25% with the recovery of 69.10%.The pure mineral tests indicate that octyl hydroxamic acid(OHA) is an effective collecter of rutile and andradite, and rutile can be activated remarkably by lead nitrate while andradite not. Sodium fluosilicate was found to be an effective selective depressor for andradite. Zeta potential measurements and Infrared spectrum measurements indicate chemisorption and physically absorption are occured on the surface of rutile with OHA and stable pentabasic chelate are formed.