Mineral processing method for comprehensively recovering weak magnetic iron, rare earth and fluorite

• Main Authors: CAO ZHAO, ZHANG JINSHAN, CAO YONGDAN
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2017
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; DIFFERENTIAL SEDIMENTATION; FLOTATION; 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; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; 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

The invention discloses a mineral processing method for comprehensively recovering weak magnetic iron, rare earth and fluorite. The mineral processing method comprises the following steps: by taking tailings as a raw material, adopting high intensity magnetic separation by a high gradient magnetic separator, ore grinding, magnetic roasting, low intensity magnetic separation by a cylinder magnetic separator and selection by a magnetic separation column to obtain final iron concentrates with a TFe grade being 60-62 percent; adopting ore grinding on the tailings subjected to high intensity magnetic separation by taking o-hydroxy naphthalene hydroxamic acid as a collector and water glass as an inhibitor, and carrying out flotation with one rough floatation and three concentrating to obtain rare earth concentrates with an REO grade being 48-52 percent; and adopting ore grinding on rare earth flotation tailings by taking sodium oleate as a collector and acidified sodium silicate as an inhibitor, and carrying out fl