Method for separating bismuth from arsenic in high-bismuth and arsenic sulfur concentrate

• Main Authors: YUAN JINGZHONG, TANG YUHE, QIU XIANYANG, HU ZHEN, LI HANWEN, YE XIAOLU, YANG QUANZHI, CHEN HONGBING, LI PEILUN, SONG BAOXU, CHEN MINGBO, WANG CHENGXING, RAN JINCHENG, FU HUA, HE FENGWEN, WANG TAI, ZOU JIANJIAN, YAO YANQING
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2018
• 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 discloses a method for separating bismuth from arsenic in high-bismuth and arsenic sulfur concentrate. According to the method, firstly, pyrrhotite with relatively high magnetism is sorted out through low intensity magnetic separation in advance; and then, pyrrhotite with relatively low magnetism is sorted out through strong magnetic separation, the pyrrhotite with relatively high magnetism and the pyrrhotite with relatively low magnetism are combined to form the sulfur concentrate mainly with the pyrrhotite, effective removing of the pyrrhotite is achieved through the action ofthe magnetic separation, preconcentration of bismuth is achieved through the scientific control of a magnetic separation condition, the handling capacity of following bismuth leaching is effectively reduced, the leaching rate of the bismuth is increased, the in-leaching grade of the bismuth is remarkably improved, a bismuth leaching agent is reasonably added in magnetic separation of tailings so that normal temperature an