| 摘要 |
A pulp lifter for installation in a rotary grinding mill has a leading edge wall (4) and a trailing edge wall (2) with respect to rotation of the mill. The leading edge wall (4) and the trailing edge wall (2) define a pulp lifter chamber (1 ), and a grate allows slurry to pass to a radially outward collecting region (10) of the pulp lifter chamber for removal from the mill by way of a radially inward discharge region of the pulp lifter chamber. The pulp lifter chamber (1 ) further comprises a gate (6) positioned between the collecting region (10) and the discharge region, the gate (6) being movable between an open position, in which the gate (6) permits solid material to pass from the collecting region (10) to the discharge region, and a closed position, in which the gate (6) prevents return movement of solid material from the discharge region to the collecting region (10). Also, a pulp lifter whose trailing edge wall (2) is inclined; a pulp lifter whose trailing edge wall (2) has a S-shaped curvature; a pulp lifter that has a pocket for receiving pebbles; and a pulp lifter whose grate has openings distributed so that the area nearer the trailing edge wall (2) has fewer openings than the area nearer the leading edge wall (4).
|
