炼钢方面 1、利用镁砖修砌空气上升道及煤气喷出火 道: 我厂平炉全系Ruppman式,炉体最弱的部份就是空气上升道及燃气喷出火道,在以前下部全用　砖砌成,上部表面砌三层镁砖,再在上部用镁砖摆上小墙,这样总是在使用以後10～15天中,由於下部　砖a部被浸,而上部的小墙因为失去了支 Steelmaking 1, the use of magnesia brick building air way up and gas spout Fire: I flat hearth furnace Ruppman type, the weakest part of the furnace is the air rising Road and the gas jet fire in the previous lower part of the whole Brick, the upper surface of three layers of brick built puzzle, and then placed in the upper part of the small wall with magnesia, it is always 10 to 15 days after use, because the lower part of a bricks were dipped, and the upper part of the small wall because Lost branch