| 摘要 |
PCT No. PCT/EP96/01494 Sec. 371 Date Sep. 17, 1997 Sec. 102(e) Date Sep. 17, 1997 PCT Filed Apr. 4, 1996 PCT Pub. No. WO96/31277 PCT Pub. Date Oct. 10, 1996A method and apparatus for comminuting granular mill feed material wherein the material is delivered in a stream to a gap between two rotary grinding tracks which confront one another, one of which is positioned at a small angle to the other so that in response to relative rotation of such tracks the width of the gap decreases to a minimum at an initial rate of at least 1 m/s. At the minimum width of the gap the material is subjected to comminuting pressure greater than 50 MPa. |
