Tailing recovery process adopting magnetic separation-circulating roasting-regrinding and magnetic separation method

The invention relates to a tailing recovery process adopting a magnetic separation-circulating roasting-regrinding and magnetic separation method. The tailing recovery process is characterized in that magnetic separation, third-section hydrocyclone closed circuit grinding and classification operatio...

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Bibliographische Detailangaben
Hauptverfasser:	YANG XIAOFENG, TANG HAO, LIU SHUANG'AN, MEI CANGUO, DOU GUOYU, SONG JUNLI, LIU SHENGCHEN, MENG NA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS METALLURGY MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to a tailing recovery process adopting a magnetic separation-circulating roasting-regrinding and magnetic separation method. The tailing recovery process is characterized in that magnetic separation, third-section hydrocyclone closed circuit grinding and classification operation, circulating roasting, and regrinding and fifth-section low-intensity magnetic separation are adopted. According to the tailing recovery process disclosed by the invention, tailings in third-section low-intensity magnetic separation, fourth-section low-intensity magnetic separation and fifth-section low-intensity magnetic separation are returned to a concentration operation before roasting, and subjected to roasting, grinding and separation again, so that effective recovery for iron minerals is realized under relatively large grinding particle sizes, and the tailing grade is low, thus the good indexes of a concentrate grade of more than 63% and a metal recovery rate of more than 57% are obtained.