| 摘要 |
The refractory bricks having a good rust resistance was manufactured by adding Mg-Al composite metal and chromium oxide into a refractory material of magnesia and chromium. Sintered magnesia clinker containing 0.23 wt.% of SiO2, 0.12 wt.% of Al2O6, 0.06 wt.% of Fe2O6, 0.33 wt.% of CaO, and 99.14 wt.% of MgO, chromium iron ore containing 4.67 wt.% of SiO2, 26.92 wt.% of Al2O6, 12.99 wt.% of Fe2O: , 0.79 wt.% of CaO, and 20.68 wt.% of MgO, 32.88 wt.% of Cr2O6, and chromium oxide contg. 0.02 wt.% of SiO2, 0.01 wt.% of Al2O6, 0.03 wt.% of Fe2O6, 0.01 wt.% of CaO, and 0.01 wt.% of MgO and 99.80 wt.% of Cr2O6 was molded at 800 kg/cm2 with 2.5 wt.% of phenol resin binder, and sintered at 1,750 deg.c to give the brick. |
