沥青基球形活性炭成球工艺研究

Research on the sphericizing technique of pitch-based spherical activated carbon

以各向同性的高温沥青(软化点为280℃)为主要原料,采用悬浮法制备含萘沥青球。使用电子显微镜对沥青球的表面形貌进行表征。探讨了萘含量以及成球温度、成球时间和搅拌速度等成球工艺条件对沥青基球形活性炭成球形貌的影响。结果表明,萘含量为30%的调制沥青在成球温度为110-115℃,搅拌速度为300 r/min,成球时间为30 min的条件下制得的沥青球球形度好,表面光滑。

Thepitchsphereswerepreparedbysuspensionmethodfromhightemperaturepitch （ softening point is 280℃） . The surface morphologies of pitch spheres were characterized by electron microscope. The effects of naphthalene content and balling conditions such as balling temperature, balling time, stir speed were investigated. The results show that the pitch spheres with naphthalene content of 30%have good sphericity and slick surface and the suitable sphericizing conditions were the temperature, 110℃-115℃, stir speed,300r/min, time,30min.