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发明公开
CN105950828A 减少钢液进LF炉冶炼时间的方法 无效 - 撤回

减少钢液进LF炉冶炼时间的方法
摘要：
本发明公开了一种减少钢液进LF炉冶炼时间的方法，包括以下工艺步骤：（1）造渣材料的配制：按照原料重量百分比石灰为35%～50%，三氧化二铝粉末为35%～40%，铝粒为12%～20%，金属钙为2%～5%，二氧化硅粉为3%～5%配制造渣材料；（2）转炉出钢前控制钢液中氧含量[O] ≤500ppm；（3）在转炉出钢过程中，用管道将造渣材料与钢水一道加入钢包中，加入量按重量为3～5kg/吨钢，利用钢水自身的重力及底吹氩的搅拌力搅拌钢水；（4）出钢完毕时，在钢液中加入0.05～0.08kg/吨钢的活性金属Ca。本发明能去除钢液中的部分有害元素S，以得到合符要求的钢水，降低钢水在LF炉的处理时间和成本消耗。
摘要（英）：

The invention discloses a method of shortening the smelting time of molten steel entering an LF furnace. The method comprises the following process steps: (1) preparing a slagging material: preparing the slagging material from raw materials in percentages by weight as follows: 35-50% of lime, 35-40% of aluminum sesquioxide powder, 12-20% of aluminum particles, 2-5% of metal calcium and 3-5% of silicon dioxide; (2) controlling the oxygen content [O] in the molten steel to be less than or equal to 500ppm before converter tapping; (3) in the converter tapping process, adding the slagging material and the molten steel together into a steel ladle through pipelines, wherein the additive amount is 3-5kg/ton of steel, and stirring the molten steel by virtue of self weight of the molten steel and a stirring force of bottom argon blowing; and (4) after tapping, adding 0.05-0.08kg/ton of steel of active metal Ca into the molten steel. The method disclosed by the invention can remove a part of harmful element S in the molten steel so as to obtain molten steel satisfying the requirements, so that the treatment time of the molten steel in the LF furnace is shortened, and the cost consumed is lowered.

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