Direct iron smelting reduction has been examined using a modified 50 kg induction furnace. The furnace was equipped with continuous raw mateiral feeding, a top oxygen lance, argon bottom bubbling, and sensors for emasurement of gas and bath temperatures, gas composition and other parameters. In the base case, iron ore was charged at the rate of 1.5 kg/h, coke flowrate was adjusted to maintain a char fraction in the slag at 30 wt per cent, the oxygen flowrate was 100 Nl/min and the post-combustion ratio (PCR) was 60 per cent. The PCR was varied from 45 to 75 per cent by changing the lance height relative to the bath surface.
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机译：已经使用改进的50 kg感应炉检查了直接的铁冶炼还原。该炉配有连续的原料供给，顶部氧气喷枪，氩气底部鼓泡以及用于确定气体和熔池温度，气体组成和其他参数的传感器。在基本情况下，以1.5 kg / h的速度装入铁矿石，调节焦炭流量以将炉渣中的炭含量保持在30 wt％，氧气流量为100 Nl / min，后燃比（PCR）为60％。通过改变相对于镀液表面的喷枪高度，PCR的范围从45％到75％。
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