山东某石墨矿分选试验研究

摘要

山东省某石墨矿属于难选类型石墨,为了得到合格的石墨产品,对该石墨矿进行了试验研究.研究结果表明该矿属鳞片状结构石墨,主要组成矿物为石墨、云母,另含有较多量的矿泥、长石、石英、透闪石,其次为云母、方解石等.平均粒度为0.17 mm,-0.074mm的含量为13.84％,以细粒为主,粘性粒级含量高,直接进行浮选无法得到合格的石墨精矿.考虑其组成成分中的矿泥较多,经过脱泥工作后再进行浮选试验,最终得到了品位为97％,回收率为87％的石墨精矿.%A graphite ore in Shandong Province belongs to the type of refractory graphite.In order to get qualified graphite products experimental study on the graphite ore was conducted.The graphite ore was a scale-like structure of graphite,which was mainly composed of graphite,mica,a large amount of slime,feldspar,quartz,tremolite,followed by mica,calcite and so on.The average particle size was 0.17mm,with-0.074mm content of 13.84％,containing mainly fine-grained and high viscosity particles.The experimental results showed that direct flotation tests cannot produce qualified graphite concentrate,taking into account of its composition with more mud.After the desliming tests flotation experiments were carried out which produced a final graphite concentrate with a grade of 97％ and a recovery of 87％.