Abstract: The present invention relates to a method for grinding a material, for example, cement or cement additive. The method according to the present invention includes at least one step of mechanical grinding the said material in a grinding apparatus, wherein grinding apparatus comprises grinding bodies, wherein the method further includes a step of neutralizing a debris-layer formed at the pre-surface layer of the grinding bodies by using in combination, in any order, simultaneously or sequentially, the following operations: a) applying electric potential to the grinding bodies in the said at least one grinding step, and b) applying a surfactant to the said non-conductive material in the said at least one grinding step, wherein the amount of surfactant is from 50% to 100% of the normative amount.