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The operational factors undoubtedly affect the efficiency of the grinding milling machine technology. For example, in closed-circuit grinding, when the ratio of returning sand is too large and exceeds the normal passing ability of the grinding machine, the phenomenon of “running rough” will appear in the grinding products. If the sand return ratio is too small or there is no sand return, it will easily cause over-grinding. If the load is too large, the phenomenon of “running rough” in the grinding products is serious, and if the load is insufficient, the crushing is severe. Therefore, it is required to give uniformity and stability to the ore during sanding. When the ore amount is given, the efficiency of the grinding technology will be improved. The grinding grain size of each section is determined to be unreasonable. It also affects the efficiency of grinding technology.
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