CN107021767A - 一种脱硫搅拌枪用浇注料 - Google Patents
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Abstract
本发明提供一种脱硫搅拌枪用浇注料,解决现有的搅拌器因抗侵蚀性差,铁水侵蚀严重,抗热震性差导致结构剥落,热剥落等引起寿命较短的问题。本发明的技术方案为:硅线石10~20重量份;Ti3AlC31‑3重量份;莫来石10~20重量份;矾土基刚玉10‑20重量份;铬刚玉5‑15重量份;硅线石微粉5‑10重量份;铜铁尖晶石微粉3‑5重量份;富铝尖晶石粉3‑8重量份;氧化镍粉3~5重量份,纯铝酸钙水泥2~5重量份,铝凝胶粉2‑4重量粉;外加添加剂0.35重量份;上述原料按照配比进行混合,即可得到一种脱硫搅拌枪用浇注料。
Description
技术领域
本发明涉及属钢铁冶金行业中铁水脱硫预处理工艺技术领域,特别涉及一种脱硫搅拌枪用浇注料。
背景技术
搅拌脱硫法是日本新日铁文田制铁所于1963年开始研究,1965年应用于工业生产的一种铁水炉外脱硫技术。该脱硫方法具有脱硫效率高,脱硫剂消耗少,作业时间短,金属耗损低以及耐火材料消耗低等特点。上世纪70年代,我国武钢从日本新日铁引进搅拌脱硫技术,其它国内企业也相继引进或自行设计制备的搅拌脱硫生产线,开拓了我国铁水脱硫技术发展的新格局。
搅拌枪为钢铁冶炼工艺中铁水脱硫预处理所需的主要设备之一,搅拌枪因使用条件较为苛刻。搅拌器内部为搅拌器钢结构,外部浇注耐火材料,钢结构可以重复使用几个寿命周期,而外部耐火材料则需一个寿命周期进行一次重新浇注;随着脱硫效果及程度的需求提高,所用搅拌器寿命不能满足当前产品的需要,寿命较短,影响了生产的顺利进行,市场上急需一种长寿命的搅拌脱硫枪用浇注料。
发明内容
本发明提供一种脱硫搅拌枪用浇注料,解决现有的搅拌器因抗侵蚀性差,铁水侵蚀严重,抗热震性差导致结构剥落,热剥落等引起寿命较短的问题。
为解决上述技术问题,本发明的技术方案为:硅线石10~20重量份;Ti3AlC31-3重量份;莫来石10~20重量份;矾土基刚玉10-20重量份;铬刚玉5-15重量份;硅线石微粉5-10重量份;铜铁尖晶石微粉3-5重量份;富铝尖晶石粉3-8重量份;氧化镍粉3~5重量份,纯铝酸钙水泥2~5重量份,铝凝胶粉2-4重量粉;外加添加剂0.35重量份;上述原料按照配比进行混合,即可得到一种脱硫搅拌枪用浇注料(本发明如无特殊说明物质含量指的是重量含量)。
其中,优选地,所述硅线石铝含量≥60%。
其中,优选地,所述莫来石铝含量≥70%。
其中,优选地,所述矾土基刚玉铝含量≥90%。
其中,优选地,所述富铝尖晶石铝含量≥78%。
其中,优选地,所述铝凝胶粉纯度≥99%;Ti3AlC3纯度≥99%。
其中,优选地,所述添加剂为三聚磷酸钠 、防爆纤维、金属铝粉三种复合。
本发明的有益效果:.本发明的耐火浇注料根据铁水搅拌脱硫的工艺过程和搅拌器本身的结构特点,选择本发明所用的耐火原料为主要原料,获得了一种抗侵蚀性好,抗结构剥落和抗热剥落性能良好,长寿命的一种脱硫搅拌枪用浇注料。
本发明的脱硫搅拌枪用浇注料在铁水搅拌脱硫的使用条件下,采用硅线石骨料、Ti3AlC3和细粉,铬刚玉,提高了脱硫搅拌枪体积稳定性和抗渣铁性能,避免了搅拌枪收缩开裂以及挂铁渣的缺陷。
本发明添加富铝尖晶石,铜铁尖晶石,有效改善了骨料和粉料之间的结合状况,提高了耐火浇注料的基质结合强度,基质的抗熔渣渗透能力,进而提高了脱硫搅拌枪的整体性能。
本发明添加的纯铝酸钙水泥,铝凝胶粉,氧化镍粉在高温使用过程中,会逐步发生反应,生产性能优越的镍铝尖晶石,强化了整体性能。采用铝凝胶粉和水泥共同作为复合结合剂,可以提高整体性能,降低引入的钙含量。添加剂的加入,获得了较好的产品施工性能和部分热震性能。
采用本发明的脱硫搅拌枪浇注料性能优良、成本低廉,在同样的应用条件下平均使用寿命达到1500次左右,是目前常用的搅拌器耐火材料使用寿命3倍。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本实施例提供一种脱硫搅拌枪用浇注料,是由如下制备方法制备而成:
按照如下重量比进行配料:硅线石19重量份;Ti3AlC31重量份;莫来石18重量份;矾土基刚玉18重量份;铬刚玉12重量份;硅线石微粉9重量份;铜铁尖晶石微粉4重量份;富铝尖晶石粉5重量份;氧化镍粉5重量份,纯铝酸钙水泥5重量份,铝凝胶粉4重量粉;添加剂0.35重量份。
其中,优选地,所述硅线石铝含量≥60%。
其中,优选地,所述莫来石铝含量≥70%。
其中,优选地,所述矾土基刚玉铝含量≥90%。
其中,优选地,所述富铝尖晶石铝含量≥78%。
其中,优选地,所述铝凝胶粉纯度≥99%;Ti3AlC3纯度≥99%。
其中,优选地,所述添加剂为三聚磷酸钠 、防爆纤维、金属铝粉三种复合。
实施例2
按照如下重量比进行配料:硅线石17重量份;Ti3AlC32重量份;莫来石18重量份;矾土基刚玉18重量份;铬刚玉15重量份;硅线石微粉10重量份;铜铁尖晶石微粉3重量份;富铝尖晶石粉6重量份;氧化镍粉4重量份,纯铝酸钙水泥4重量份,铝凝胶粉3重量粉;外加添加剂0.35重量份。
其中,优选地,所述硅线石铝含量≥60%。
其中,优选地,所述莫来石铝含量≥70%。
其中,优选地,所述矾土基刚玉铝含量≥90%。
其中,优选地,所述富铝尖晶石铝含量≥78%。
其中,优选地,优选地,所述铝凝胶粉纯度≥99%;Ti3AlC3纯度≥99%。
其中,优选地,所述添加剂为三聚磷酸钠 、防爆纤维、金属铝粉三种复合。
实施例3
按照如下重量比进行配料:硅线石10重量份;Ti3AlC33重量份;莫来石17重量份;矾土基刚玉20重量份;铬刚玉15重量份;硅线石微粉10重量份;铜铁尖晶石微粉5重量份;富铝尖晶石粉8重量份;氧化镍粉5重量份,纯铝酸钙水泥5重量份,铝凝胶粉2重量粉;外加添加剂0.35重量份。
其中,优选地,所述硅线石铝含量≥60%。
其中,优选地,所述莫来石铝含量≥70%。
其中,优选地,所述矾土基刚玉铝含量≥90%。
其中,优选地,所述富铝尖晶石铝含量≥78%。
其中,优选地,优选地,所述铝凝胶粉纯度≥99%;Ti3AlC3纯度≥99%。
其中,优选地,所述添加剂为三聚磷酸钠 、防爆纤维、金属铝粉三种复合。
将上述制备好的耐火浇注料按常规方法浇注成40mm×40mm×160mm的试验块,并与脱硫搅拌器常用浇注料进行抗热震稳定性对比试验,具体为1000℃水冷实验,结果上述实施例制得的耐火浇注与常规浇注料基本相同。
将上述实施例制得的脱硫搅拌枪用浇注料送到炼钢厂脱硫搅拌枪制作现场,按照搅拌枪制作工艺,完成了数支工业试验用搅拌枪的制作。通过工业性试验,取得了搅拌枪平均使用寿命为1500次左右优良效果,使用寿命相当优秀。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种脱硫搅拌枪用浇注料,其特征在于,硅线石10~20重量份;Ti3AlC31-3重量份;莫来石10~20重量份;矾土基刚玉10-20重量份;铬刚玉5-15重量份;硅线石微粉5-10重量份;铜铁尖晶石微粉3-5重量份;富铝尖晶石粉3-8重量份;氧化镍粉3~5重量份,纯铝酸钙水泥2~5重量份,铝凝胶粉2-4重量粉;外加添加剂0.35重量份。
2.根据权利要求1所述的一种脱硫搅拌枪用浇注料,其特征在于,所述硅线石铝含量≥60%。
3.根据权利要求1所述的一种脱硫搅拌枪用浇注料,其特征在于,所述莫来石铝含量≥70%。
4.根据权利要求1所述的一种脱硫搅拌枪用浇注料,其特征在于,所述铝凝胶粉纯度≥99%,Ti3AlC3纯度≥99%。
5.根据权利要求1所述的一种脱硫搅拌枪用浇注料,其特征在于,所述添加剂为三聚磷酸钠 、防爆纤维、金属铝粉三种复合。
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CN1785908A (zh) * | 2005-11-03 | 2006-06-14 | 武汉钢铁(集团)公司 | 铁水脱硫搅拌器用耐火浇注料 |
US20070203014A1 (en) * | 2006-02-24 | 2007-08-30 | Tdk Corporation | Dielectric ceramic composition and the production method |
CN104876598A (zh) * | 2015-05-14 | 2015-09-02 | 武汉钢铁(集团)公司 | 薄带连铸用Max相-氮化硼复合陶瓷侧封板及其制造方法 |
CN104973877A (zh) * | 2015-07-16 | 2015-10-14 | 陈巨根 | 一种具有良好烧结性能的浇注料 |
CN105036756A (zh) * | 2015-02-11 | 2015-11-11 | 徐梅子 | 一种12000t/d窑口专用浇注料 |
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US20070203014A1 (en) * | 2006-02-24 | 2007-08-30 | Tdk Corporation | Dielectric ceramic composition and the production method |
CN105036756A (zh) * | 2015-02-11 | 2015-11-11 | 徐梅子 | 一种12000t/d窑口专用浇注料 |
CN104876598A (zh) * | 2015-05-14 | 2015-09-02 | 武汉钢铁(集团)公司 | 薄带连铸用Max相-氮化硼复合陶瓷侧封板及其制造方法 |
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