Slimes’ individual processing is characteristic of China Wuxi Concentrator. Wolframite is brittle and easily over crushed. According to statistics, the number of slimes and metal content are generally 11% -14% of the out-cave ore, slimes recovery is about 3% -8% of total recovery, slimes recovery is obviously improved, which is crucial to improve the comprehensive recovery of tungsten and valuable metals and mining economic benefits.

 

Each wolframite concentrator generally has slimes workshop or section. General flows of slimes processing: after desulfurization, recovered tungsten ores by re-election, flotation, magnetic separation or several sorting processes combined according to the properties of slimes materials, while using the associated metal minerals comprehensively.

 

The main flow of slimes recovery process is "desulfurization - centrifugal concentrator - tungsten flotation - magnetic separation" in Jiangxi Tungsten Mine. After the slag and concentrated, protogenic and secondary slimes go flotation desulfurization, centrifugal concentrator and then a rough one and a fine one, centrifuge tungsten concentrate flotation, flotation concentrate by magnetic separation SQC magnetic machine, magnetic concentrates of tungsten concentrates election, magnetic separation tailings tin ore, crude centrifugal concentrator tailings, flotation tailings tungsten into the shaker respectively sweep the election.

 

With this process, tungsten recovery rate of slimes processing goes to 66.94% , tungsten slimes concentrate grade is 65.16%, with an annual output of 82.2t of tungsten metal content, tungsten slimes tailings grade is controlled at 0.12% or less, thus ensuring comprehensive tungsten beneficiation recovery rate above 86%.