Beneficiation method for comprehensively improving indexes of low-grade lepidolite concentrate

• Main Authors: LING SHISHENG, LIU SHUJIE, WU SHIPENG, XIAO QIAOBIN, WANG ZHONGMING, HE ZHUANGZHI, LIU FANG, TAN XIN, ZHAO CHEN
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2023
• Subjects: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS 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

The invention provides a beneficiation method for comprehensively improving indexes of low-grade lepidolite concentrate, and relates to the field of beneficiation. The beneficiation method comprises the steps that low-grade lepidolite ore is ground through a rod mill to obtain ore pulp, then a pH regulator and a collecting agent are added for multiple times of roughing, and rough concentrate and roughing tailings are obtained; the rough concentrate is screened and classified, oversize products are high-grade lithium concentrate, and undersize products are subjected to multiple times of concentration to obtain lithium concentrate; and a collecting agent is added into the roughing tailings for multiple times of scavenging, scavenged concentrate returns to the ore pulp or is scavenged in the last stage, and scavenged tailings serve as final tailings to be treated. According to the beneficiation method provided by the invention, the lepidolite is subjected to flotation recovery under the condition of no pre-desli