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发明公开
CN102382925A 一种超纯度工业纯铁的制造方法 无效 - 驳回

一种超纯度工业纯铁的制造方法
摘要：
本发明公开了一种超纯度工业纯铁的制造方法，其步骤包括：(1)将原料进行EAF冶炼；(2)LF冶炼；(3)VD炉真空脱气；(4)出钢浇铸。该制造方法通过EAF冶炼熔氧期步骤中在Si、P达标后进行完全扒渣以及在LF冶炼步骤中采用CaO+CaF2+CaC2渣系进行脱硫，将各杂质元素含量控制在技术要求范围之内，从而使得采用本发明所述的技术方案制得的超纯度工业纯铁达到超低杂质元素的水平，完全能够满足二次硬化钢、高纯度要求的精密合金、高级叶片钢和不锈钢的生产需要。
摘要（英）：

The invention discloses a manufacturing method of ultrapurity armco iron, which comprises the following steps: 1) EAF (Electric Arc Furnace) smelting of raw materials; 2) LF (Ladle Furnace) smelting; 3) vacuum degassing of a VD (Vacuum Degassing) furnace; and 4) steel tapping and casting. By the manufacturing method, the slagging-off is carried out in the step of melting and oxidizing period through EAF smelting after Si and P reach the standard, and desulfuration is carried out in the step of LF smelting by using a CaO+CaF2+CaC2 slag system, so that the contents of impurity elements can be controlled in the scope technically required. Therefore, the ultrapurity armco iron manufactured by using the technical scheme of the invention can reach the standard that the contents of the impurity elements are extremely low, thereby fully meeting the production requirements of secondary hardening steel, precision alloy with high purity requirement, high grade blade steel and stainless steel.

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