Is aluminate cement refractory cement
Release time: 2025-05-07
Aluminate cement is made by calcining bauxite and limestone as raw materials
The relationship between aluminate cement and refractory cement can be summarized as follows:
Definition and ingredient consistency
Aluminate cement is made by calcining bauxite and limestone as raw materials, mainly composed of calcium aluminate (CA), with an alumina content of about 50%, and belongs to hydraulic cementitious materials. Refractory cement is another name or subdivision type of aluminate cement, and the two are completely identical in terms of raw materials, production processes, and core components.
Fire resistance performance and application scenarios
Aluminate cement is widely used in the field of refractory materials, such as refractory castables and refractory mortar, due to its high aluminum content (Al ₂ O ∝ ≥ 50%) and high temperature stability, which can withstand high temperatures above 1300 ℃. Its fire resistance performance increases with the increase of CA ₂ (calcium aluminate) content.
The correlation of label classification
The national standard GB201-2000 classifies aluminate cement into grades CA-50, CA-60, CA-70, CA-80, etc. according to the content of Al ₂ O3, among which CA-50 (alumina 50% -60%) is the most common refractory cement.
Precautions for use
Avoid mixing with refractory soil, otherwise it will reduce strength;
Usually, it is necessary to use aggregates in combination (such as 30% coarse aggregate and 46% fine aggregate) to reduce the risk of high-temperature cracking.
Conclusion: Aluminate cement is the main type of refractory cement, and the two are often considered synonymous in the industrial context, but refractory cement emphasizes its high-temperature application characteristics more.
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