Modern Mining ›› 2024, Vol. 40 ›› Issue (03): 227-229.
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In order to improve the second-stage grinding effect of the tailings recovery plant of Dex⁃ ing Copper Mine，aiming at the problems of poor grinding effect and low grinding efficiency of the original ϕ0.9 m × 1.8 m horizontal overflow ball mill，the KLM-75 vertical mill was used to replace the original hori⁃ zontal ball mill，and the grinding conditions of the vertical mill were studied.The test results show that the grinding effect is the best when the alumina ceramic ball is used as the grinding medium of the KLM-75 verti⁃ cal mill. The fineness of the examined grading overflow is increased by 3.75 percentage points，the running cur⁃ rent of the vertical mill is decreased by 13.66%，the daily consumption of the grinding medium is decreased by 94.73%，and the service life of the spiral liner is increased by 136.84%. The energy saving effect is remarkable.
