公开(公告)号：EP2621637B1

公开(公告)日：2015-03-25

申请号：EP11779189.7

申请日：2011-09-26

申请人： Outotec Oyj

发明人： RINNE, Antti ,  SALOHEIMO, Kari

IPC分类号： B03D1/16 ,  B03D1/02 ,  G01F23/28

CPC分类号： B03D1/02 ,  B03D1/028 ,  B03D1/16 ,  B03D1/20 ,  G01F23/296 ,  G01F23/2962

公开(公告)号：EP2442910A1

公开(公告)日：2012-04-25

申请号：EP10789062.6

申请日：2010-06-10

申请人： Outotec Oyj

发明人： ALLENIUS, Hans ,  HINDSTRÖM, Sami ,  VIRTANEN, Markku ,  SALOHEIMO, Kari

IPC分类号： B02C17/18 ,  B02C23/02

CPC分类号： B02C17/1855

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).

公开(公告)号：EP2621637A1

公开(公告)日：2013-08-07

申请号：EP11779189.7

申请日：2011-09-26

申请人： Outotec OYJ

发明人： RINNE, Antti ,  SALOHEIMO, Kari

IPC分类号： B03D1/16 ,  B03D1/02 ,  G01F23/28

CPC分类号： B03D1/02 ,  B03D1/028 ,  B03D1/16 ,  B03D1/20 ,  G01F23/296 ,  G01F23/2962

摘要： The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from anaqueous slurry that contains these particles. The flotation machine includes a flotation cell (1), and a rotor (2) that is inside the flotation cell. The rotor (2) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell (1) is determined, and the rotation speed of the rotor (2) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device (5) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device (4) is arranged to adjust the rotation speed of the motor (3), which rotates the rotor (2), on the basis of the measuring result of the measuring device (5) to remove the solid matter from the bottom of the cell.