回转窑轮带与垫板间隙对生产的影响及调整措施

Impact of the Clearance between Kiln Tyre and Backing Plate on Production and its Adjustment Measures

基于ϕ4.8m×74m回转窑运行数据,简述了通过计量热膨胀量和滑移量,测量轮带与垫板间隙的方法,以及间隙大小对回转窑运行的影响及间隙调整措施。轮带与垫板间隙过大,易造成耐火砖断裂、脱落,缩短耐火砖使用寿命;间隙过小,易造成回转窑受热膨胀不均,产生“缩颈”现象,严重影响窑的安全运行。通过加强轮带与垫板间的润滑维护、调整垫板厚度、更换垫板等,可使轮带和垫板间隙在合理范围内,降低维护成本,进一步提高窑运转率。

Based on the operation data ofϕ4.8m×74m rotary kiln,it briefly descrbes the measuring method of the clearance between the kiln tyre and the backing plate by measuring the thermal expansion and slippage,and the impact of clearance size on the operation of rotary kiln and its adjustment measures.Excessive clearance between the kiln tyre and the backing plate would easily cause the breakage and fall-off of the refractory bricks and shorten its service life,while too small clearance would easily cause uneven thermal expansion of the rotary kiln and result in the"necking"phenomenon,which would seriously affect the safe operation of the kiln.By strengthening the lubrication and maintenance,adjusting the thickness of the backing plate,replacing the backing plate,etc.,the clearance between the kiln tyre and the backing plate could be ensured within a reasonable range,which reduce costs of kiln maintenance,and further improve the operation rate of the rotary kiln.