| 摘要 |
<p>PCT No. PCT/EP94/04311 Sec. 371 Date Jun. 20, 1996 Sec. 102(e) Date Jun. 20, 1996 PCT Filed Dec. 23, 1994 PCT Pub. No. WO95/17967 PCT Pub. Date Jul. 6, 1995A tubular mill for grinding natural and synthetic raw materials, in particular for the cement industry, includes a rotary cylindrical drum (11, 111) arranged with its axis (27) horizontal and containing at least one grinding element (25, 34), in which there are one or more grinding chambers (22; 23, 123) connected together, in at least one (22) of which the grinding element consists of a roller (25) which when in its operating position has its axis (26) essentially parallel to the axis (27) of the drum (11, 111) and is supported by an independent external pressure and extraction support (28), the roller (25) being idle and, at least along one of its outer generating lines, engaging an annular grinding track (24) rigid with the inner wall of the drum. As the grinding element for the second chamber (23), the mill can include a second roller (34) arranged and supported as the first roller (25), or a plurality of grinding balls.</p> |
