During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded.
在某地高氟含量铁矿石的冶炼过程中，炉缸粘土质高炉砖砖视遭到了极其严重的破坏作用。
2
Continuous car type furnace was used in iron ore reduction successfully. The contents of with rotary hearth furnace are as more than 92% metallization and about 90% total iron.
此炉子已经成功地用于铁精矿粉还原焙烧，所得到的海绵铁产品的金属化率大于92 %，全铁约90 %。
3
Meanwhile, the effect of adding titanium ore on hearth bottom maintenance is notable, but not obvious for the control of hearth sidewall erosion.