What is the recommended method for initial dryout heating of newly installed refractory linings?

The recommended method for initial dryout heating of newly installed refractory linings is through the use of process heating devices. This approach ensures that the refractory materials are uniformly and adequately heated during the dryout phase. Utilizing process heating devices allows for controlled temperature increases, which is critical in preventing undue stress and cracking in the refractory lining.

These devices can effectively manage the heating process by providing direct and consistent heat to the refractory materials. It is essential for the dryout process to be gradual to allow for proper moisture removal without compromising the integrity of the installation. Properly following this method significantly contributes to achieving the desired performance and longevity of the refractory linings.

Other methods, such as natural sunlight or air drying, may lack the control necessary for heat application, potentially leading to uneven drying or inadequate moisture removal. Infrared heaters, while they can provide effective localized heating, may not be as suitable for the initial dryout of an entire refractory lining compared to dedicated process heating devices that encompass more comprehensive heating strategies.