Based on the
operation data of ?4.8m×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.
