一种重型异形坯用连铸结晶器保护渣
By adjusting the chemical composition and preparation process of the protective slag, the problems of excessively rapid cooling of the billet and uneven slag film inflow during the continuous casting of heavy irregular billets were solved, achieving uniform slag film inflow and slow cooling effect, thus improving the quality of the billet and production stability.
CN115870465BActive Publication Date: 2026-07-17XIXIA XIBAO METALLURGY MATERIAL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIXIA XIBAO METALLURGY MATERIAL CO LTD
- Filing Date
- 2022-11-29
- Publication Date
- 2026-07-17
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Abstract
本发明提供一种重型异形坯用连铸结晶器保护渣及其制备方法，属于冶金材料技术领域，其中保护渣包括以下质量百分比的化学成分：SiO2：22.0～30.0%、CaO：29.0～37.0%、Al2O3：7.0～13.0%、Na2O：0.5～2.5%、F‑：0.5～2.5%、MgO：1.0～4.0%、Fe2O3:0~3.0%、C.free:14.0～20.0%、CO2:6.0～10.0%，其中制备方法包括以下步骤，将各原材料粉碎至200～400目的细粉，然后加入清水，使制浆浓度57～63%，然后球磨，球磨时间≥50min，接着喷雾造粒，得到中空颗粒状保护渣；本发明可以提高了保护渣析晶率增加渣膜热阻，达到铸坯缓冷效果，减少裂纹产生，而且保护渣的粘度高，渣膜的流入均匀而连续。
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