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发明公开
CN102652988A 一种含硼的氧化钡基钢包覆盖剂及其制备方法和应用 无效 - 驳回

  • 专利标题： 一种含硼的氧化钡基钢包覆盖剂及其制备方法和应用
  • 专利标题（英）： Boron-containing barium-oxide-base ladle covering agent as well as preparation method and application thereof
  • 申请号： CN201210142963.6
    申请日： 2012-05-10
  • 公开(公告)号： CN102652988A
    公开(公告)日： 2012-09-05
  • 发明人: 王宏明 , 李桂荣 , 赵玉涛 , 赵钊
  • 申请人： 江苏大学
  • 申请人地址： 江苏省镇江市京口区学府路301号
  • 专利权人： 江苏大学
  • 当前专利权人： 江苏大学
  • 当前专利权人地址： 江苏省镇江市京口区学府路301号
  • 代理机构： 南京经纬专利商标代理有限公司
  • 代理商 楼高潮
  • 主分类号： B22D11/111
  • IPC分类号： B22D11/111 ;  C21C7/076
一种含硼的氧化钡基钢包覆盖剂及其制备方法和应用
摘要：
本发明涉及洁净钢冶炼及钢包冶金技术领域，特别涉及一种含硼的氧化钡基钢包覆盖剂及其制备方法和应用。该覆盖剂的成分（质量百分数）为：BaO85-95%，B2O32-6%，MgO1-8%，CaC21-10%，余量为杂质0-4%，杂质中SiO2≤1.0%，Al2O3≤1.0%，P≤0.01%，S≤0.01%；本发明的覆盖剂具有的突出特征是：高碱度、强碱性、强还原性和良好熔化性能，脱硫能力强、实现钢液回磷控制，覆盖剂熔化速度快且铺展性好，有效防止钢液氧化、吸气并吸附钢液沉淀脱氧的产物，减少钢中的S、P、O等有害元素和夹杂物，提高了钢包冶金效果。另外，该钢包覆盖剂具有很好的玻璃化特征，有利于防止提高钢包清渣效率和防止钢包粘渣，提高钢包使用寿命和周转效率，并且该覆盖剂的原料来源、成本低、具有显著的经济效益和社会效益。
摘要（英）：

The invention relates to the technical field of clean steel smelting and ladle metallurgy and in particular relates to a boron-containing barium-oxide-base ladle covering agent as well as a preparation method and application thereof. The boron-containing barium-oxide-base ladle covering agent comprises the following components in percentage by weight: 85-95% of BaO, 2-6% of B2O3, 1-8% of MgO, 1-10% of CaC2 and 0-4% of the balance of impurities, wherein the impurities comprise less than or equal to 1.0% of SiO2, less than or equal to 1.0% of Al2O3, less than or equal to 0.01% of P and less than or equal to 0.01% of S. The boron-containing barium-oxide-base ladle covering agent has the remarkable characteristics of being high in alkalinity, strong in basicity and reducing property, good in melting performance and strong in desulfuration capacity, realizing molten steel rephosphorization control, being rapid in speed of melting and good in spreadability, effectively preventing molten steel from being oxidized, air from being sucked and molten steel precipitation desoxydation products from being absorbed, reducing harmful elements such as S, P and O as well as impurities in the steel, and improving the steel ladle metallurgy effect. In addition, the ladle covering agent has good vitrification characteristic, and is conductive to improving the ladle slag removing efficiency and preventing the ladle from bonding slag, thus improving the service life and turnover efficiency of the ladle; furthermore, the covering agent is wide in raw material source and low in cost, and has remarkable economic benefit and social benefit.

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