Method for efficiently recovering tungsten, tin and fluorite from raw tin ore

• Main Authors: ZHONG LELE, LI CHENG, HE JIAN, YANG XIAOJUN, YU XINWEN, HE TING, YANG MIN, ZHAO XIANGYANG, ZHANG WEI, MAO SURONG, WEN WEI
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2023
• 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 method for efficiently recovering tungsten, tin and fluorite from raw tin ore, and belongs to the technical field of ore dressing. The method comprises the following steps: firstly, reselecting tin raw ore, regrinding reselected rough concentrate, then carrying out strong magnetic separation to remove limonite, and sequentially carrying out reverse flotation desulfurization, defluoridation and desilicication; after regrinding the reselected tailings, carrying out strong magnetic separation to remove limonite, and carrying out reverse flotation desulfurization and fluorite flotation; by means of the beneficiation process, the tin concentrate with the tin grade larger than 52% and the fluorite concentrate with the fluorite grade larger than 96% are obtained, and the recovery rate of tin and fluorite is increased. In addition, tungsten-tin bulk concentrate and fluorite secondary concentrate with CaF2 larger than 85% are further obtained, and co-generated tungsten ore in the tin raw ore i