| 摘要 |
PURPOSE:To enhance the grade or recovery efficiency of ferrite, in a magnetic separation process wherein roughing and cleaning or two-stage treatment of roughing and scavenging are combined, by applying dispersion treatment to gypsum-containing ferrite before each process. CONSTITUTION:In treatment for recovering ferrite from gypsum-containing ferrite, an ultrasonic dispersing machine, a pulverizer and an ultra-disperser can be utilized in a method for dispersing gypsum-containing ferrite. For example, in two-stage treatment consisting of a roughing magnetic separation process and a cleaning magnetic separation process, by performing dispersion treatment before each process, the magnetization of the obtained cleaning concentrate M.M becomes 68emu/g and becomes high by 9emu/g as compared with a case performing no dispersion treatment. |
