| 摘要 |
1492928 Hot tops FOSECO TRADING AG 3 Oct 1974 [17 Oct 1973] 48420/73 Heading C3N [Also in Divisions B2 and B3] A coating of mould flux on a hot top lining slab (see Division B3), comprises one or more of fly ash, fly ash floaters, and alkali and alkaline earth metal silicates, carbonates and halides. A thick paste for trowelling may be made by mixing with water, by weight: fly ash 80%; alkali metal carbonate 13%; inorganic binding agent 7%. |
