| 摘要 |
PURPOSE:To obtain chromium-containing iron with high chromium concentration, by blowing oxygen in place of hot blast from the tuyere of a furnace into which cold-bound pellets and lump coke are charged so as to prevent temp. rise in the upper part of a furnace. CONSTITUTION:Chromitite and coke fines are mixed, and the resulting mixture is subjected to pelletizing and curing to be formed into cold-bound pellets contg. carbon material. Then the above pellets and lump coke are charged from the upper part of a furnace. At the same time, oxygen is blown from the tuyere and further pulverized coal is also blown. Then chromitite is reduced to be formed into ferrochrome.
|
