Dense refractory castable (Low-porosity Mullite Castable Series)

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$Dense Refractory Castable (High-alumina Castable Series)$

$Dense Refractory Castable (High-alumina Castable Series)$ $Dense Refractory Castable (High-alumina Castable Series)$

$Dense Refractory Castable (High-alumina Castable Series)$

Dense refractory castable (Low-porosity Mullite Castable Series)


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CASTIX

insulation refractory High temperature high refractoriness refractory materials Castable High-Alumina Steel fiber Low-porosity Mullite Castable

Product Description

Low-porosity mullite castable is a dense refractory material formulated with mullite clinker as the main raw material, supplemented by ultrafine powder and high-efficiency water reducers. Its core characteristics include low porosity and high compactness, along with excellent high-temperature volume stability, thermal shock resistance and chemical corrosion resistance. It is less prone to structural looseness or deformation at high temperatures, and has good construction performance—it can be cast after mixing with water, with rapid strength improvement after curing. Compared with ordinary mullite castables, it has more outstanding thermal insulation and erosion resistance, and its service life is significantly prolonged.

Application

This material is widely used in high-temperature industrial fields such as metallurgy, building materials and petrochemicals.

In the metallurgical industry, it can be used as the working lining of ladles and tundishes, as well as the lining of blast furnace hot blast stoves.

In the building materials industry, it is suitable for key parts such as ceramic roller kilns and regenerator lattices of glass kilns. In the petrochemical field, it is applied to the lining construction of cracking furnaces and reforming furnaces.

In addition, it is also suitable for the lining of various high-precision heat treatment furnaces, meeting the needs of complex working conditions where high temperature, strong scouring and corrosive media coexist.

Parameter Control

Index		Unit	Low-porosity Mullite Castable Series
Index		Unit	CT Mul-55PL	CT Mul-65PL	CT Mul-70PL	CT Mul-70PL Super
Al₂O₃		%	≥55	≥65	≥70	≥70
Fe₂O₃		%	≤1.5	≤1.5	≤1.5	≤1.5
Bulk density ≥		g/cm³	≥2.35	≥2.50	≥2.50	≥2.50
porosity		%	≤16	≤16	≤16	~13
Modulus of rupture ≥	110℃*24h	MPa	≥8	≥8	≥8	≥8
	1100℃*3h		≥9	≥9	≥10	≥10
	1450℃*3h		≥9	≥9	≥10	≥10
Cold crushing strength ≥	110℃*24h	MPa	≥80	≥80	≥90	≥90
	1100℃*3h		≥80	≥80	≥90	≥90
	1450℃*3h		≥90	≥90	≥90	≥90
Reheating linear change	1100℃*3h	%	±0.5	±0.5	±0.5	±0.5
Reheating linear change	1450℃*3h	%	±0.5	±0.5	±0.5	±0.5
Thermal Conductivity At 600℃		W/m.k	≤1.8	≤1.8	≤1.8	≤1.8
Recommended Maximum Service Temperature		℃	1400	1450	1450	1450
Application Method		casting