| 摘要 |
<p>1322214 Carbon black furnace PHILLIPS PETROLEUM CO 29 July 1970 [30 July 1969] 36725/70 Heading C1A A carbon black furnace comprises a refractory lining of pre-formed shaped blocks 27 for feed zone 3, and a cast unitary lining of refractory material 17 for carbon black forming zone 4 and 5. Removable closure 7 has a layer 29 of cast refractory.</p> |
