By means of crushing and conditioning the size ratio, fettle material and mud powder to plug tap-hole for electric refining 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
there has no screw thread on the installation hole on head of water-cooling. It's difficult to install it by the screw tap which along the products.
产品有以下缺陷：水冷头上的安装孔没有螺纹，用配带的自攻螺丝安装非常困难。
3
Dust collecting unit shall work for dedusting of the taphole and the outlet of the hot-metal ladle.