ANNEALING
QUENCHING AND TEMPERING
CARBURIZING AND CARBONITRIDING
NITRIDING
TOOL STEELS
STAINLESS STEELS AND SUPERALLOYS
NONFERROUS METALS
SPECIAL TREATMENTS
ON SITE TREATMENTS
DRYING OUT OF REFRACTORY MATERIALS
ThermetcoThermetco Services Mobiles
Metal structure coated with refractory cement ready for dry out
Greatly enhances their durability and performance.

 

Over the past few years, technological improvements made to refractory products (better row materials, better particle sizing, new additives, improved manufacturing and coating processes) have greatly increased their performance.

Also, proper refractory dry out has proven to be a key to achieving optimum service life.

It is important to understand how refractory materials react to water evaporation during drying out as this can cause explosive spalling and seriously damage equipment especially at temperatures between 200°C - 320°C (390°F - 610°F). Lowering temperatures is also critical, as residual stresses in the lining can cause breakage of the refractory material.

Services Mobile Thermetco’s team performs on-site refractory dry out using high velocity gas burners or electric resistance elements according to the type of treatment required. Our high velocity gas burners use an excess air volume to obtain low temperature combustion gasses. Massive air circulation helps dry the refractory lining while maintaining good thermal uniformity. Depending on the type of refractory material, dry out operations can extend over very long periods at temperatures of up to 1300°C / 2400°F.

Drying-out of refractory tube
Drying-out of refractory lining in a cracking tower