Abstract: The Guangfeng black talc deposit in Jiangxi Province is an important non-metallic miner‐ al resource in China. Its mineral composition is mainly talc，accompanied by dolomite，quartz and organic matter. According to the characteristics of black talc ore，the beneficiation test was carried out to optimize the process flow，improve the utilization rate of resources and promote industrial upgrading. Taking a black talc ore in Guangfeng as a sample，the mineral composition and structural characteristics of the ore were clarified by means of polarizing microscope，X-ray diffraction and chemical method. It was found that talc and gangue minerals were closely symbiotic，and the content of organic matter was high，resulting in low whiteness of the raw ore. Based on this，the flotation + calcination process was studied and designed. The results showed that the flotation concentrate with yield of 77.52%，talc grade of 83.28% and talc recovery of 87.29% was obtained by flotation closed-circuit process test. The talc concentrate with yield of 71.22%， MgO content of 31.05% and whiteness of 83.94% was obtained by roasting the flotation concentrate，so as to meet the needs of downstream industrial applications.

Key words: black talc, flotation, grinding fineness, reagents