What should I do if the refractory castable lining is difficult to remove?
Refractory castables need to be dismantled and repaired after a certain period of time or wear. Generally, a pneumatic pick is used for dismantling, or an electric hammer or mechanical tool can be used for dismantling.
1. The removal of refractory castables is very laborious
The removal of refractories castables is very laborious and requires maintenance after removal, so care must be taken not to cause damage to the furnace shell during removal.
If disassembly and assembly are too difficult, disassembly and assembly materials can be used. Spray on the surface of the castable. After spraying, all castables containing aluminum will automatically fall off.
2. Precautions for dismantling refractory castables
If the furnace top castable is to be removed, the plaster layer should be removed with a shovel and other tools, and then the wire mesh should be removed. Use shovels, hammers and other tools to remove refractory castables, use wrenches to remove corrugated boards, and then check the quality of old nails. If they can no longer be used, use a cutting machine to remove them, and finally clean up the site.
Be careful when dismantling refractories castables, and do not dismantle them by force. If you want to completely solve the problem, you need to analyze the real cause and use practical methods to dismantle it to avoid damage to the shell and deformation. It is necessary to ensure that the furnace lining is in good condition, so as to continue to replace the refractories castable for the lining and solve various difficult problems in the high-temperature furnace lining in a timely manner.
3.Removal of nails in refractory castables
Special attention must also be paid to the problem of removing nails in refractory castables. Those that cannot be used must be dealt with properly and no hidden dangers can be left. If it affects the replacement of the castable for the lining, attention should also be paid to the re-construction of the refractory castable and nail welding, so that the replaced refractory material castable cannot crack, expand or peel off.
Make the lining castable more integrated and have better air tightness.
