Desulfurizing and dephosphoring refining agent for external refining of molten steel
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 安徽中实冶金材料工程技术研究有限公司
- Publication Date
- 2007-06-06
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention belongs to the treatment of molten ferrous alloys, and in particular relates to an added treatment agent for refining outside a furnace. Background technique
[0002] With the progress of society and the rapid development of industry, the requirements for the content of sulfur and phosphorus in steel are becoming more and more stringent. Reduce the content of sulfur and phosphorus in steel to produce clean molten steel. One of its main measures is to reduce the phosphorus content of the ferromanganese melt and adopt an out-of-furnace refining process. Refining agent is added during the refining process to desulfurize and dephosphorize molten steel. The current desulfurization uses CaO-Al 2 o 3 Out-of-furnace desulfurization agent based on molten steel, and CaO-FeO-based out-of-furnace dephosphorization refining agent for dephosphorization. Defects are: CaO-Al 2 o 3 The refining agent for out-of-furnace desulfurization of molten stee...