With the reinvigoration of the manufacturing industry around the country comes the need to renovate older industrial furnaces. Whether your facility needs a full or partial relining will depend on several factors, including the extent of damage and the materials used previously.
A thorough inspection will tell you whether or not your #refractory can be salvaged with relining.
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Refractory relining describes the replacement of the brickwork or monolithic refractory material from a furnace, oxidizer or boiler. Relining may be done as part of necessary repairs or to update an outdated machine.
Structural integrity is a top priority in refractory relining. Older materials were generally heavier, so after years or even decades of neglect, they may not be structurally sound. A thorough inspection should be done before relining, to ensure that the structure itself can withstand renovations.
Many furnaces built from 1960 – 1990 were lined with firebrick on the walls and roof. Often, an original brick roof in an older furnace will partially or totally collapse. If not totally collapsed, they may have cracked due to thermal stress. Instead of hunting for an experienced refractory brick mason, you may opt for an easier to apply material, such as monolithic or fiber refractory.
If you want to stick with firebrick, make installation easier on yourself with a Convey-It System® , which is a conveyer belt system that streamlines brick refractory installation. It’s compact and durable, making a normally intensive and tedious process easier and faster.
An experienced refractory contractor or manufacturer should perform a heat flow analysis or inspection to demonstrate the suitability of the new lining. This takes into account temperature fluctuations, maximum temperature, internal stress, slag and chemical composition. This will help ensure heat containment capabilities.
Many old furnaces have excellent bones and will operate for years to come with a partial or full relining. With the right refractory material, relining can give your furnace a new lease on life.
Contact Us to learn more about refractory relining and how to get your furnace back online.
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