By means of crushing and conditioning the size ratio, fettle material and mud powder to plug tap-hole for electricrefining furnace use were developed.
通过加工破碎，调整粒度及配比等工艺参数，研制开发出铁合金精炼炉补炉料及堵眼粉。
2
To take away the refining part of the steel making cycle off an electric arc furnace, which is discussed elsewhere, is an excellent start.
把炼钢周期中的精炼阶段从电弧炉中移走（这个问题将在别处加以讨论），是一个良好的开端。
3
The first electric arc furnace was installed. The arc furnace recycled locally collected scrap steel by melting and refining, then continuously casting the molten steel into billets.