On the basis of simulative experiment and industrial test, this paper discusses the exploitation of magnesian siderite in the area of Hezhang, Guizhou Province, examines the processing plan for calcination of magnesian siderite, and proposes some practical and effective methods.

At the center of Huoqiu iron ore field,there lies Lilaozhuang iron-magnesite deposit,which occurs in the metamorphic rocks of Archean Huoqiu group,with ores hosted in the Mg-rich carbonate rocks.