This article takes a low-grade ilmenite in the western Sichuan region as the research object.In response to the low grade,complex mineral composition,close symbiotic relationship between valuable minerals,and fine embedded particle size of the ilmenite,a magnetic-flotation mixed separation process was used to beneficiate ilmenite.Through the experimental study,the beneficiation process and regime of agent are optimized,which provides theoretical basis and technical support for the development and utilization of low-grade ilmenite.The experimental results show that magnetic-flotation combined process performed excellent effect on the ilmenite ores with TiO2 grade of 7.45％,and titanium concentrate with TiO2 grade of 42.6％and recovery of 77.51％can be obtained by using a highly-selective carboxylic acid collector TOH.
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