Using sponge iron reduced by iron ore concentrate powder as raw material, the smelting process of pure iron is investigated through non vacuum induction furnace and vacuum induction furnace.
以由铁精矿粉直接还原出来的海绵铁为原料，以非真空感应炉和真空感应炉为冶炼设备，对纯铁的冶炼工艺进行了研究与试验。
The basic principle and process to produce the sponge iron in our corporation are introduced.
对海绵铁生产的基本原理及公司的海绵铁生产工艺进行了介绍。
The sulfur content in pellets almost remains the same during the said process, the sulfur content in sponge iron originates from iron ores.
球团在还原过程中硫含量基本不变，海绵铁中的硫基本上源于矿石。
The sulfur content in pellets almost remains the same during the said process, the sulfur content in sponge iron originates from iron ores.
球团在还原过程中硫含量基本不变，海绵铁中的硫基本上源于矿石。
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