| 摘要 |
A barrier comprising: a) between about 75 w/o and about 95 w/o alumina-silica refractory grain, and b) between about 2 w/o and about 10 w/o of a sealant selected from the group consisting of zinc borate; sulfur; R1 Alx/2 Siy/2 Oz/2 and R2 Sib/2 Sc/2 Cd/2 Oe/2 Hf/2 wherein: i) R1 is selected from the group consisting of Na, K, and Li, and mixtures thereof, ii) x,y and z are integers between 0 and 16, iii) R2 is selected from the group consisting of Ca, Sr and Mg, and mixtures thereof, and iv) b,c,d,e and f are integers between about 0 and 16. |
