feature of castable

Nov 22,2016
Castable material can be directly used in the thermal equipment on the template, with an anchor, it can be in a certain conservation period after tamping. it can also be made of prefabricated blocks, such as vaults, ceiling, furnace wall, furnace cover, furnace door, etc., it is much more convenient in construction and replacement than the brick or direct casting molding, .
Castables will be further developed, because it has some obvious features;
(1) Refractoriness is more or less as the same material refractory brick, but because of without sintering, the initial heating shrinkage, the load softening point of castable is lower than the refractory brick. Nonetheless, the overall performance is superior to refractory bricks.
(2) Due to the role of low-temperature binder. The room temperature of castable with high compressive strength. At the same time, because the overall masonry is good, good air tightness of the stove, not easily to  deform, the outside of the shell steel plate can be canceled, the furnace resistance to mechanical vibration and shock performance better than brick masonry. For example, the upper part of the side wall of a dry soaking furnace is used, where mechanical wear and impact are more severe and life expectancy is several times longer than that of brick.
(3) Thermal stability is good, most of the aggregate is clinker, expansion and cementing materials to offset the contraction, so the thermal expansion masonry relatively speaking, smaller than the brick, the temperature stress is also small. And the structure of a variety of mesh, needle, chain-like crystalline phase, the ability to resist temperature stress. For example, the furnace is used to pour the stove and furnace lid. Life extended to a year and a half.
(4) The production process is simple, eliminating the complex brick-making process. Can be made into a variety of prefabricated blocks, and mechanized construction, greatly accelerating the building furnace speed, efficiency is 10 times than bricklaying. Can also use waste brick as aggregates, turning waste into advantage.