Patent ID: 9573138
Date: 2017-02-21
CPC Classifications: B02C

Claim:
1. A roller mill for grinding material to be ground, comprising: a grinding table configured to carry material to be ground on an upper surface thereof; at least one grinding roller in communication with said grinding table and configured to roll over the upper surface of said grinding table to grind the material to be ground between the upper surface of the grinding table and an outer surface of said grinding roller; and a rotatable water lance disposed above the upper surface of said grinding table and in front of said grinding roller in the direction of rotation of said grinding table, and configured to apply water to the material to be ground that is carried on said grinding table; and a means for rotating said rotatable water lance so that the distance away from said grinding roller at which water is applied to said material to be ground may be selectively adjusted, in order to adjust the amount of time that the material to be ground is exposed to the applied water before the material to be ground is ground between said grinding roller and said grinding table.