After three-stage pulverization, dry-distillated activation and coupling agent surface modification, the kaolinite-typed gangue of Sichuan Hongni Coal Mine(SHCM) can be manufactured into activated gangue\'s carbon black. Its surface area is ＞25 m2/g, and possesses carbon black\'s carbon framework and structure. It can be used as strengthening agent of high polymer material such as rubber.