The hardness of graphite ore is generally medium hard or soft. The grade is generally between 2% ~ 10%. The crushing process is relatively simple, we often use three stage, two stage, one stage process or flotation process.

 

The small and medium ores to process weathered ore, can be crushed directly into Kefid vertical mill. The flotation process is generally the closed circuit of multi-segment grinding, multi-segment sorting, mining order (or focus) to return. Multi-stage process has three forms, namely, concentrate refinishing, mine re-grinding and tailings regrinding. For crystal graphite,we usually use concentrate regrinding process, under normal circumstances,the dressing recovery is up to 80%.

 

Based on the above crushed graphite ore, Kefid classified graphite ore crushing equipment as: raymond mill, high pressure suspension roller mill, high pressure powder mill and ultra-fine mill. According to the unique nature of graphite ore and beneficiation methods, Kefid has developed graphite ore equipment from coarse grinding to fine grinding to ultra-fine grinding. It has the features of less investment cost, safe and reliable operation,energy saving and environmental protection.