Often called refractory concretes, castables and gun mixes are furnished dry to be mixed with water before installation. Usually cast and vibrated in the same manner as ordinary concrete, castables can also be installed by trowelling, pumping or occasionally ramming.

Often called refractory concretes, castables and gun mixes are furnished dry to be mixed with water before installation. Usually cast and vibrated in the same manner as ordinary concrete, castables can also be installed by trowelling, pumping or occasionally ramming.

Often called refractory concretes, castables and gun mixes are furnished dry to be mixed with water before installation. Usually cast and vibrated in the same manner as ordinary concrete, castables can also be installed by trowelling, pumping or occasionally ramming.

Plastic refractories are mixtures of refractory materials prepared in stiff, extruded condition for application without mixing. They are generally rammed into place with pneumatic hammers, but they can also be pounded with a mallet, gunned or vibrated into place. Plastic refractories are especially adaptable for making quick, economical, emergency repairs and are easily installed to any shape or contour, eliminating the need to cut special shapes

Wherever furnace construction and operating conditions permit, refractory linings are typically constructed with brick of standard sizes and shapes. Standard materials cost less than larger, more intricate shapes and frequently are more serviceable. They are also more accessible, in that they are likely to be routinely stocked by the manufacturer.