Deflocculated (Highly Compact)
These high-tech and
delicately formulated castables contains deflocculating agents
and ultra fine particles beside high Alumina Cement, which
consists the core of binding system. By introducing finely
balanced chemical additives into the binding systems, reduction
of cement proportion and consequently CaO content is possible.
Considering deleterious effect of lime, through generation of
low melting fluxes on sensitive characteristics such as bond
strength, corrosion and erosion resistance at high application
temperatures, superiority of deflocculated to conventional
castable in high temperature applications is easily understood.
The relatively low cement
content permits a favorable reduction of mixing water, which
results in lower porosity.
castables have been successfully applied in the hardest and most
demanding services such as continuous casting tundishes,
electrical arch furnace roof, and hearth of walking beam or
rotary hearth furnaces.
are categorized to the following groups:
Action of admixtures
Action of plasticisers
Action of accelerators
Action of reactive fillers