Processing additive for high-pressure roll press process of forming finish grind cement

In a process for forming hydraulic cement powder product from clinker raw material by subjecting clinker raw material to a high pressure roll press, pulverizing the clinker raw material within the roll press to form a press cake, disintegrating the press cake and removing the coarse particulate, the improvement comprising applying to the clinker raw material an aqueous solution having from 5 to 95 weight percent of an organic hydroxyl or methoxy containing additive therein selected from phenol, propylene glycol, lignin or mixtures thereof at a rate of from about 25 to 2500 gram of additive per metric ton of clinker raw material.