After long-term use slime dryer, slime dryer will appear around the idler wear degree difference, before the extent of which the idler wear lighter, less obvious, 尔后托 wheel wear more serious, and often becomes a saddle shaped or stepped, after the idler severe wear will affect the drying process smoothly, and greatly shrink cycle parts, Branch promptly identify the cause of severe wear rear drag. First, the defect structure plan slime dryer will form Roller badly worn, because slime dryer cylinder is tilted angle Roller placed above the barrel knot around a large round of negotiations with the size difference , front width of 120MM, rear width of 105MM, and the same width around slime dryer Roller, are 160MM, from the above figures show, after the area in contact with the roller and the wheel is narrow, and cylinder tilted at an angle, greater pressure on the rear wheel of care, after long hours of work, after the idler easily deformed. Second, the staff is wrong with the operation, will form after Roller badly worn, for example, some mining plants when dry materials, not detailed ran up and down the barrel of the situation, or around the idler adjustment method, after the formation of the idler Throughout the course of their work force by changing the event, after the formation of the idler badly worn. Third, slime dryer repair method is incorrect. When the slime dryer long-term use because of the long-term effect of high temperature gas stream by, round belts and pads will be severe wear on the cylinder deformation may change back wheel with an oval, then the pressure will be on the idler changes, and eventually it will severely worn idler.