Due to its special chemical properties, ceramic fiber blankets may have adverse reactions when in contact with certain substances, affecting their performance and service life. Specifically, ceramic fiber blankets are not suitable for contact with the following substances:
1. Fluorine and fluoride: Fluorine is the most corrosive to refractory fibers, and it can react with all aluminum silicate materials (including the main components of ceramic fiber blankets), resulting in a decline in material properties.
2. Vanadium and other heavy metals: vanadium and other heavy metals in inferior fuel oil will produce V2O5 when burned, which melts into liquid at about 690 degrees and can be adsorbed in the pores of fibers to form a layer of hard shell. After this hard shell falls off, it will corrode the fibers layer by layer, seriously affecting its service life.
3. Alkali metal: If you are in an alkaline environment for a long time, the fiber lining of the ceramic fiber blanket may shrink and be damaged. After the surface layer is peeled, it will continue to corrode the bottom layer, further shortening its service life.
4. Phosphoric acid at high temperature: Experiments have shown that if it is in contact with phosphoric acid in an environment above 540 degrees for a long time, the ceramic fiber blanket will produce obvious shrinkage.
In addition, while sulfuric acid itself does not react with ceramic fibers, it corrodes metal anchors very severely. In some cases, sulfuric acid can even "dissolve" anchors and furnace shells, indirectly affecting the effectiveness of ceramic fiber blankets.
To sum up, in order to maintain the performance and service life of ceramic fiber blankets, its contact with the above substances should be avoided as much as possible. During use and storage, the relevant operating procedures and safety specifications should be strictly adhered to to ensure the safety and reliability of the ceramic fiber blanket.