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With the extensive mining of high grade iron ore resources, the average iron grade of minable iron ore reserves is only about 30% in China. Low grade ore is available abundantly, but it is used ineffectively due to the difficulties in ore preparations. As one of important iron ore resources, siderite ore is abundant in China with proven reserve of 1.83 billion tons, occupying 14% of total iron ore reserves.1,2) However, siderite is refractory to beneficiate and has hardly been employed in iron production mainly due to its characterization that higher loss on ignition (LOI), low iron grade, decompositions of carbonate, and a significant amount of substitutions of Mg, Ca and Mn for Fe in isomorphism in the siderite lattice. The high grade siderite directly used for ironmaking is less than 10% of its total reserves.3) Since siderite is difficult to upgrade by traditional beneficiation technologies, such as flotation, gravity separation, magnetic separation or the combinative processes of these technologies, it is urgent to develop of an effective way to utilize siderite resource. In recent years, extensive researches have been focused on pyrometallurgical processes and such as magnetizing roasting-magnetic separation and direct reduction-magnetic separation process.3–9) For DRI production process of siderite, Zhu6) Coproduction of DRI Powder and Semi-coke from Siderite Ore and Low Rank Coal by Excessive Coal-based Direct Reduction in Rotary Kiln