Abstract: This is a paper in the field of mineral processing engineering. Iron separation experiments of the untabulated ore of Yangtianwo and the untabulated ore of Tianjiacun were carried out by comparing the untabulated ore of Baima in Panxi.Results show that when the TFe grade is equivalent to that of iron concentrate,the iron grinding fineness of Tianjiacun off-table ore is finer than that of Yangtianwoore,the iron concentrate yield and recovery are better than that of Yangtianwo ore,and the content of harmful elements S and P in Tianjiacun iron concentrate is lower than that of Yangtianwo ore,the content of titanium in Tianjiacun high-quality iron concentrate is higher than that of Yangtianwo ore,which is disadvantageous to blast furnace smelting,and the value of titanium in its total iron tailings is lower than that of Yangtianwo ore.The research results provide data support and technical support for the rational utilization of off-balance sheet mineral resources in Tianjiacunand Yangtianwo.