Blast pipe for metallurgical processes having refractory coated surfaces

摘要

PCT No. PCT/SE87/00394 Sec. 371 Date Apr. 29, 1988 Sec. 102(e) Date Apr. 29, 1988 PCT Filed Sep. 2, 1987 PCT Pub. No. WO88/01721 PCT Pub. Date Mar. 10, 1988.A high-temperature resistant blast pipe is primarily intended for delivering gas, such as oxygen, and, when appropriate, solid material to metallurgical processes, and incorporates a layer of refractory material comprising a refractory mixture of solid particles and an alkali-silicate based binder. The blast pipe is characterized in particular in that the major constituent of the binder is of the type polymerized alkali silicate.