中国矿山工程

Based on an industrial experiment at a domestic tungsten mine, a systematic analysis was conducted on the ore feed size, reject rate, and equipment processing capacity in the photoelectric sorting process. With an original ore grade of 0.22% and an ore feed size of 10~40mm, the use of the K-108 photoelectric sorting equipment yielded a tungsten concentrate with a grade of 0.26%, a reject tailings tungsten grade of 0.046%, a reject rate of 21.84%, and a tungsten metal recovery rate of 95.38%. The photoelectric sorting process showed a significant separation effect for this tungsten mine. The study identified that non-standard ore sampling was the fundamental reason for the high reject and concentrate recovery rates in the industrial test, and the sorting cycle load was a key factor affecting the stability of the sorting process.