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以某铜矿进口大型半自磨机为例,按冲击破碎的力度和几率分析,现用Φ130mm钢球偏小,改用重量与最大粒度原矿块相等的Φ180mm钢球。处理量增加60%以上,钢球消耗下降40%左右。提出钢球球径加大到原矿最大粒度即Φ240mm钢球,钢球抛落几乎都冲砸在矿块上,其冲击破粉碎效果(破碎比、处理量能耗和物耗),都优于任何破碎机和其他磨机。
Taking a large semi-autogenous mill imported from a copper mine as an example, according to the analysis of the intensity and probability of impact crushing, Φ130mm steel ball is now used as a small Φ180mm ball with the same weight as the largest particle size ore block. Handling capacity increased by more than 60%, steel ball consumption decreased by 40%. It is proposed that the ball diameter of the steel ball should be increased to the maximum particle size of the ore, ie, Φ240mm steel ball, almost all of which is smashed on the ore block. The impact crushing effect (crushing ratio, processing energy consumption and material consumption) Crushers and other mills.