Rod Mill

Rod Mill

Rod mills operate at lower speed than ball mills since the rods are rolled and not cascaded. For an equivalent grind, a rod mill uses less steel than a ball mill because of the lower speed and better contact between the media and ore. The rod charge must be maintained in good working condition, and broken and worn rods must be removed. Rod mills usually require greater operator attention. It is important that the rods stay essentially parallel to one another. If rods become misaligned, grinding action is lost and, more importantly, rod tangles occur.

  1. rod mill commonly used 50-100 - mm diameter steel bar as grinding medium, and the ball mill grinding media ball. Steel bar length 25 to 50 mm, shorter than shell carbon 0.8% - 0.8% of the high carbon steel is often used to manufacture;Rod load quantity for rod mill about 35% - 35% of effective volume, with the naked eye observation, the level of the rod in about 100-200 - mm below the center line of the cylinder.
  2. the rod mill barrel length to diameter is generally 1.5 2.0, and the end cover plate on the inside surface should be a vertical plane. Its purpose is to prevent and reduce the steel bar in the cylinder body from the chaos movement, bend and break, ensure the steel rods have regular exercise.Ball mill barrel length and the ratio of the smaller diameter, in most cases the ratio only slightly greater than 1.
  3. rod mill without grating ore, and use the overflow type, open rack row ore;Row ore side hollow shaft neck diameter is bigger than ball mill is generally the same specification.Rod mill cylinder speed should be lower than the same specification of the ball mill work speed, drop them in the medium of xie type work status.