大同市阀门厂1.5吨炼钢电弧炉的炉墙用镁砂、卤水打结而成,原来使用耐火砖炉盖时,炉墙寿命仅80～90炉。以后改用水冷炉盖(如图1所示),炉墙寿命提高到130炉以上,而且节约了大量的耐火砖,镁砂的消耗也明显降低。该厂平均日产2炉钢,1978年使用耐火砖 Datong City valve factory 1.5 tons steelmaking furnace wall with magnesia, brine knot made, the original use of firebrick cover, the furnace wall life of only 80 to 90 furnaces. After the switch to the water-cooled lid (shown in Figure 1), furnace wall life increased to more than 130 furnaces, and save a lot of refractory brick, magnesia consumption is also significantly reduced. The plant average Nissan 2 furnace steel, fired brick in 1978