FLUORINE-FREE EXTRACTION METHOD FOR INSOLUBLE POTASSIUM ORE

• Main Authors: WEI ZHOU, YONGPENG YING, XIAOHUA SUN, YUQING ZHAO, XIN XIONG
• Format: Patent
• Language: English
• Published: 25.10.2022
• Subjects: DIFFERENTIAL SEDIMENTATION; FLOTATION; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

The present invention provides a fluorine-free extraction method for an insoluble potassium ore, and relates to the technical field of ore extraction. The extraction method includes a crushing process, a grinding process, a magnetic 5 separation process and a flotation process of a potassium feldspar ore. The present invention uses sodium hexametaphosphate and a sodium oleate/dodecylamine collector to float potassium feldspar under fluorine-free and weakly acidic conditions provided by a sulfuric acid. The present 10 invention increases the surface hydrophobicity of the potassium feldspar, so that the potassium feldspar is floated up and.selectedd Comparedxvith.hydrofluoric acid, the sulfuric acid is weaker in acidity and lower in corrosion and cost. Therefore, the extraction method provided by the present 15 invention reduces the corrosion<xfthe eguipment.andtflxeimpact onthehumanbodyandtheenvironmentandreducestheproduction cost. In addition, the extraction method realizes the extraction of high-quality potassium feldspar concentrate, mica concentrate and quartz concentrate and achieves the 20 comprehensive utilization of the mineral resources.