Application of Large-sized Precast Block for Blast Furnace Trough/Runner

摘要

Precast block is a prefabricated refractory product which is produced by casting castable refractory into mold with vibration forming,followed by curing and drying.In comparison with production of shaped refractory such as refractory brick,precast block production method enables to produce refractory block with large size and/or complicated shape more easily.Ceiling block for electric arc furnace.blast furnace trough/runner,injection lance or snorkel (immersion tube) for RH degasser are listed as examples of such large-sized precast block.Taking precast block applied for blast furnace trough/runner as example,technologies relating to precast block production are described in this report.