In extreme operating conditions such as casting holding furnaces,ceramic insulation blanket are exposed not only to high temperatures but also to continuous corrosion from aluminum vapor, chloride atmospheres, and alkaline vapors. When impurity levels within the fibers are excessive, the ceramic fiber blanket becomes more susceptible to chemical attack at high temperatures, leading to damage of the fiber structure and eventual material failure.
The chemical stability of a ceramic fiber blanket is directly determined by its impurity content. CCEWOOL® regards impurity reduction as the fundamental prerequisite for ceramic insulation blanket stability and treats it as a core objective throughout its entire quality control process.
How does CCEWOOL® ceramic insulation blanket improve chemical stability in corrosive environments?
In-house raw material base ensures high-purity inputs
CCEWOOL® operates its own raw material base and applies more stringent raw material selection standards. Through precise grading and pre-treatment processes, impurity content is consistently controlled at ≤1%, minimizing the risk of impurities reacting with corrosive furnace atmospheres from the source.
The benefits of high-purity raw materials include:
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Stronger resistance to chemical corrosion, reducing fiber embrittlement and breakage
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Longer-lasting thermal insulation performance
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Greater lining stability during long-term high-temperature operation, extending overall service life
High-alumina and zirconia-containing systems enhance corrosion resistance and chemical stability
Based on high-quality raw materials, optimized formulations further strengthen fiber corrosion resistance. High-alumina systems offer superior chemical inertness and are less reactive with aluminum vapor and chloride atmospheres, allowing the fiber structure to remain stable under repeated thermal cycling. Zirconia-containing systems significantly enhance resistance to alkaline slags and metal vapors, enabling the fibers to maintain integrity at high temperatures without powdering, embrittlement, or structural collapse.
Through the combination of high-purity raw materials and scientifically engineered formulations, CCEWOOL® ceramic insulation blanket form a chemically stable structure that delivers longer service life in casting holding furnaces. The fiber structure remains more stable, insulation performance is retained for extended periods, maintenance intervals are significantly prolonged, and overall operating costs are reduced.
By lowering impurity content and enhancing chemical stability, CCEWOOL® ceramic insulation blanket provide customers with high-quality insulation solutions that maintain strength and resilience even in highly corrosive environments—ensuring safer furnace operation, longer lining life, and improved energy efficiency.
Post time: Dec-19-2025
