| 摘要 |
<p>PURPOSE:To efficiently heat iron scrap in a converter by charging the iron scrap into the converter, injecting kerosene from fine pipe assembling tuyere at furnace bottom, at the same time, injecting oxygen from a top-blowing lance to burn the kerosene at the furnace bottom. CONSTITUTION:The iron scrap 6 is charged into the converter 1. Successively, the kerosene is injected from the fine pipe assembling tuyere 2 set at the furnace bottom. At the same time of this, the oxygen or the air mainly containing the oxygen or mixed gas with the oxygen and nitrogen is injected from the top-blowing lance 5, to burn the above kerosene. Then, inert gas of nitrogen, argon, carbon dioxide gas, etc., is injected together with the kerosene and further, it is desirable to control the kerosene with a flow control valve 3 at the fixed rate and the inert gas with a pressure control valve 4 at the fixed pressure. Further, it is desirable to set the height of the top blowing lance 5 to comparatively low and the flow speed of the injecting oxygen to high so as to pass through gap between the iron scraps 6. By this method, the above kerosene is burnt near the furnace bottom to efficiently heat the iron scrap 6.</p> |
