Abstract: The grade of iron and tin in a low grade refractory iron-tin ore in Yunnan is 30.91% and 0.23%， respectively. The main recovered minerals are magnetite and cassiterite. In order to fully recover the valuable components in the ore， according to the properties of the raw ore， the process of iron selection with magnetic separation， sulfur selection with flotation， desliming， and cassiterite separation (gravity separation + flotation) was determined to carry out the beneficiation test research. A low intensity magnetic concentrate with iron grade of 60.69% and iron recovery rate of 78.63% could be obtained from the raw ore through a two-stage magnetic separation with one roughing and one cleaning. After one roughing， one cleaning and two scavenging， the sulfur grade of floating sulfur tailings is reduced to 0.46%， and the tin operation recovery rate of sulfur concentrate is only 6.88%. The floating sulfur tailings were screened into +0.043 mm and -0.043 mm samples. The shaker concentrate with tin grade of 6.48% and recovery rate of 52.54% was obtained by shaker using the +0.043 mm samples. After the sliming of -0.01 mm fine sludge by water purification， tin concentrate with tin grade of 5.69% and operation recovery rate of 70.23% could be obtained in closed-circuit flotation with salicylic hydroxamic acid and GZ as cassiterite collector and No.2 oil as frothing agent. The tin grade in the tailings is reduced to 0.12%. The magnetite concentrate with iron grade of 60.69% and iron recovery rate of 78.63% and tin concentrate with tin grade of 5.92% and tin recovery rate of 31.93% were obtained in the whole process. The tin grade in the tailings was reduced to 0.14%， which realized the comprehensive recovery of the iron and tin ore resources.

Key words: refractory iron-tin ore, magnetic separation, sulfur selection with flotation, shaking gravity separation, desliming, tin flotation