东冲河石墨矿区地处扬子准地台鄂中褶断区黄陵断穹核北部圈椅埫穹窿南翼，石墨矿赋存于含石墨岩系水月寺(岩)群富铝质片岩大理岩(岩)组下段上亚段的中部，为变质变成型矿床。区内产出Ⅱ、Ⅲ、Ⅳ三个工业矿层，七个工业矿体。矿石类型分为云母石墨片岩、石墨云母片岩、石墨黑云斜长片麻岩。矿石主要化学成分是SiO255．01%、 Al2O318．27%、 TFe2O37．36%、固定碳(C)6%、 K2O4．15%、 MgO1．97%，还含有少量的CaO、 Na2 O、 TiO2、 MnO。主要组成矿物为石英、云母类(黑云母和白云母)、石墨、长石类及少量绿泥石和黄铁矿。通过选矿试验，确定研究区石墨矿选矿工艺流程为：一次粗选，粗精矿四次再磨五次精选。为石墨矿的开发与利用提供科学的地质依据。%Dongchong River graphite mine area is situated in the Quanyitang southern limb of Huangling faulted dome, which is in the mid-Hubei fault folding region of Yangtze paraplatform. Graphite mine belongs to the metamorphic-trans-form type mineral deposit,existing in lower member of schist and marble formation complex and the middle of upper sec-tion with rich alumina of Shuiyuesi group which is the rock series containing graphite. There are three industrial seamsⅡ,Ⅲ and Ⅳ,and sever industrial ore bodies. The types of ore are mica graphite schist,graphite mica schist and graph-ite biotite plagiogneiss. The main chemical compositions of ore are 55. 01% of SiO2 ,18. 27% of Al2 O3 ,7. 36% of TFe2 O3 , 6% of C,4. 15% of K2 O,1. 97% of MgO,and a small amount of CaO,Na2 O,TiO2 ,MnO. The main mineral compositions are quartz,mica( black mica and muscovite) ,graphite,feldspar and a little chlorite and pyrite. According to beneficiation tests for the ore,the mineral processing technology of graphite mine has been determined that one roughing,four regrind-ing and five cleaning,which provides a scientific geological basis for the development and utilization of the graphite mine.
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