摘要：利用水厂活性炭废炭和行星式球磨机分别进行废炭干、湿法粉磨实验，激光粒径仪测定粉磨产物的粒径 d₅₀ 值，在罗辛-拉姆勒粒径特性方程基础上研究干、湿法粉磨方式和磨机转速对产物 d₅₀ 值和能耗的影响，建立废炭粉磨能耗模型，并用实际能耗值对模型进行验证。结果表明，干、湿法粉磨条件下，随能耗增加，产物 d₅₀ 值和粒径模数均先减小后趋于平缓；在 200~300 r/min 转速范围内，浆料质量比为 40%的湿法粉磨较干法粉磨易获得更小 d₅₀ 值、比能耗更低、粒径分布范围更窄的粉磨产物；粉磨方式、磨机转速均影响废炭粉磨能耗；以罗辛-拉姆勒粒径特性方程为基础的能耗方程适用于行星式球磨机粉磨废炭过程。

关键词：饮用水处理；活性炭废炭；行星式球磨机；粉磨能耗

Abstract： A kind of spent activated carbon was derived from a drinking water treatment plant， and then was grinded in planetary ball mill with or and dry methods. The index of particle size distribution d₅₀ of grinding products were valuated by laser particle analyzer. The effects of grinding methods and rotational speed on d₅₀ and energy consumptions of grinding products were investigated based on Rosin -Rammler distribution model. The energy consumption models were established， and then were verified by experimental values. The results show that the values of d₅₀ and size modulus reduce first and then stable in a certain value with the increase of energy consumption during dry or wet grinding. Comparing with dry grinding in the rang of 200 to 300 r/min rotational speed，a wet grinding at 40% solid mass concentration is conducive to obtain the grinding product with smaller d₅₀ and narrower size distribution in lower energy consumption. The energy consumptions of grinding spent activated carbon are highly affected by rotational speeds and grinding methods including wet or dry. The established energy consumption models which are based on Rosin-Rammler distribution model can be applied in the grinding process of spent activated carbon with planetary ball mill.

Keywords:  drinking water treatment；spent activated carbon；planetary ball mill；grinding energy consumption