一、前言磨矿分级是选矿准备回路的一个重要作业。在浮选厂中,磨矿约占整个选厂电耗的25～65%。磨矿部分的基建费约占选厂总投资的35～40%。精矿质量和回收率等选别指标的好坏,在很大程度上也取决于磨矿分级产品的质量。对于南墅石墨矿鳞片石墨来说,粗磨时,特别要求保护大鳞片石墨。对此,工艺上总是严格控制粗磨细度在一100目占60～70%范围。所以,要创造一个稳 First, the preface Grinding classification is an important operation of dressing preparation circuit. In flotation plants, grinding accounts for about 25 ~ 65% of the power consumption of the entire plant. Grinding part of the capital construction costs accounted for about 35-40% of the total investment. The quality of the concentrate and the recovery rate, etc., are good or bad, depending largely on the quality of the grinding grade product. Graphite graphite for the Nan Shui graphite, rough grinding, in particular, require the protection of large scale graphite. In this regard, the process is always strictly controlled coarseness of a 100 mesh in the 60 to 70% range. So, to create a stable