Beneficiation method for preparing multi-product iron ore concentrate from lean magnetic iron ore

The invention discloses a beneficiation method for preparing multi-product iron ore concentrate from lean magnetic iron ore, which comprises the following steps: 1) feeding the lean magnetic iron ore with the granularity of 25-20mm into high-pressure roller grinding-wet magnetic separation pre-selec...

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO WEIGUANG, TIAN YANCHUN, ZHENG MING, WANG NING, LAI YOUBANG, GUO BIN, ZHAO LIBING, JI YINGHUA, ZHANG TAILIN, MENG AOSHU, BIAN XINFENG, OUYANG YUNTAO, ZHAO LIUCHENG, YE HUISHI, YUAN TENG, ZHOU WENJIE, HAN MING, DUAN BINGBING, LIU JIE, ZHANG SHUO, WANG HAIXIA, XU CHENGYAN, MA XIAOYE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS PERFORMING OPERATIONS 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
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Beschreibung
Zusammenfassung:	The invention discloses a beneficiation method for preparing multi-product iron ore concentrate from lean magnetic iron ore, which comprises the following steps: 1) feeding the lean magnetic iron ore with the granularity of 25-20mm into high-pressure roller grinding-wet magnetic separation pre-selection operation, and crushing the product with the granularity of 3-0mm by using a high-pressure roller grinding to obtain pre-selected concentrate and pre-selected tailings; (2) the pre-selected concentrate is fed into first-section ore grinding-magnetic separation operation for grading, and first-section weak magnetic concentrate and first-section weak magnetic tailings are obtained; (3) the first-section weak magnetic concentrate is fed into second-section ore grinding-magnetic separation operation for grading, and second-section weak magnetic concentrate and second-section weak magnetic tailings are obtained; (4) the second-section weak magnetic concentrate is subjected to tower grinding, third-section magnetic