METHOD FOR RECOVERING SILICON AND IRON FROM IRON TAILINGS

Provided is a method for recovering silicon and iron from iron tailings. The component of the iron tailings comprises silicon and iron. The recovering method comprises the steps of: subjecting iron tailings to pre-classification, primary grinding, primary classification, secondary grinding and class...

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Bibliographische Detailangaben
Hauptverfasser:	LIU, Jianjun, YAO, Qiang, LIU, Shuangan, FU, Yafeng, MAN, Xiaofei, XU, Liansheng, CHEN, Yu, CHAI, Qingping, DONG, Zhenhai, YANG, Xiaofeng, ZHI, Hui, CAO, Zhe, LIU, Wensheng
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF DIFFERENTIAL SEDIMENTATION FERROUS OR NON-FERROUS ALLOYS FLOTATION INORGANIC CHEMISTRY MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Provided is a method for recovering silicon and iron from iron tailings. The component of the iron tailings comprises silicon and iron. The recovering method comprises the steps of: subjecting iron tailings to pre-classification, primary grinding, primary classification, secondary grinding and classification, tertiary grinding and classification, primary weak magnetic separation, primary strong magnetic separation, secondary weak magnetic separation, secondary strong magnetic separation, tertiary weak magnetic separation, tertiary strong magnetic separation, quaternary strong magnetic separation, a roughing spiral chute, a concentrating spiral chute, a scavenging spiral chute, coarse-grain flotation, a coarse-grain leaching device, iron extraction flotation, fine-grain flotation and a fine-grain leaching device to obtain a flotation concentrate, a high-purity silica micropowder product and a coarse-grain silica product. In the present invention, high value-added recycling of iron tailings can be achieved, a c