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CN110627489A - 一种环保型镍铁回转窑用耐火浇注料及其制备方法 - Google Patents

一种环保型镍铁回转窑用耐火浇注料及其制备方法 Download PDF

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CN110627489A
CN110627489A CN201911062999.1A CN201911062999A CN110627489A CN 110627489 A CN110627489 A CN 110627489A CN 201911062999 A CN201911062999 A CN 201911062999A CN 110627489 A CN110627489 A CN 110627489A
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朱新伟
王有权
王春波
王国选
孙洋洋
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Zhengzhou Keyuan Refractory Material Co Ltd
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Abstract

本发明公开了一种环保型镍铁回转窑用耐火浇注料,其组成原料的重量份为:特级矾土40‑45份,粒径在8‑3mm;棕刚玉35‑40份,粒径3‑0.088mm;锆英石粉0‑4份,粒径≤0.088mm;二氧化硅微粉1‑3份,粒径在≤2μ;氧化铝微粉3‑5份,粒径在≤1.5μ;纯铝酸钙水泥3‑7份,粒径在0≤0.045mm;复合减水剂0‑0.5份。本发明不含碳和铬等有害元素,对人体和环境无污染;采用整体浇注的施工方式,施工效率高;本发明所述特级矾土、棕刚玉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥采用科学合理的颗粒级以及配方方式,优化基质组合,添加适量复合减水剂,有效提高浇注料的施工性能,并且本发明所述浇注料不经高温预处理,只需现场低温烘烤便可直接投入使用,达到节能减排的目的。

Description

一种环保型镍铁回转窑用耐火浇注料及其制备方法
技术领域
本发明涉及一种耐火材料,具体涉及一种环保型镍铁回转窑用耐火浇注料及其制备方法。
背景技术
回转窑作为镍铁冶炼的重要设备之一,决定着镍铁冶炼的质量好坏。在生产过程中,回转窑连续运转,不仅要求耐火内衬具有良好的抗冲刷性、抗渣侵蚀性、高温体积稳定性、耐火性、热震稳定性等特点,还要求耐火内衬节能环保。而现有制作回转窑内衬的耐火浇注料不能达到上述性能,发明人经过长时间的实地调研和研究认为有必要对现有技术进行改进以解决上述技术问题。
发明内容
为此,本发明的目的是提供一种节能环保型、施工性能好、抗冲刷能力强、高温体积稳定性好、热震稳定性好及抗渣侵蚀性优良的一种耐火浇注料及其制备方法,具体而言通过以下技术方案实现:
一种环保型镍铁回转窑用耐火浇注料,其组成原料的重量份为:特级矾土40-45份,粒径在8-3mm;棕刚玉35-40份,粒径3-0.088mm;锆英石粉0-4份,粒径≤0.088mm;二氧化硅微粉1-3份,粒径在≤2μ;氧化铝微粉3-5份,粒径在≤1.5μ;纯铝酸钙水泥3-7份,粒径在0≤0.045mm;复合减水剂0-0.5份。
优先的,所述特级矾土45份,粒径在8-3mm;棕刚玉40份,粒径3-0.088mm;锆英石粉3份,粒径≤0.088mm;二氧化硅微粉3份,粒径在≤2μ;氧化铝微粉4份,粒径在≤1.5μ;纯铝酸钙水泥5份,粒径在0≤0.045mm;复合减水剂0.3份。
优先的,所述特级矾土40份,粒径在8-3mm;棕刚玉45份,粒径3-0.088mm;锆英石粉3份,粒径≤0.088mm;二氧化硅微粉2份,粒径在≤2μ;氧化铝微粉5份,粒径在≤1.5μ;纯铝酸钙水泥5份,粒径在0≤0.045mm;复合减水剂0.5份。
本发明所述制备上述环保型镍铁回转窑用耐火浇注料的方法,其特征在于包括如下步骤:
S1:将棕刚玉粉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥制成相应粒径的物料;
S2:将S1的物料称量取量并均匀混合制成预混合料A;
S3:将特级矾土制成相应粒径的物料称量取量制成骨料B;
S4:将复合减水剂取量制成预混合料C;
S5:将预混合料A、骨料B、预混合料C分别包装入袋。
S6:将预混合料A、骨料B、预混合料C均匀混合的同时加入常温水。
本发明的有益效果:本发明所述特级矾土、棕刚玉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥采用科学合理的颗粒级以及配方方式,优化基质组合,添加适量复合减水剂,有效提高浇注料的施工性能,并且本发明所述浇注料不经高温预处理,只需现场低温烘烤便可直接投入使用,达到节能减排的目的。其次,本发明不含碳和铬等有害元素,对人体和环境无污染。本发明的其他有益效果将结合下文具体实施例进行进一步说明。
具体实施方式
本发明充分排除碳、铬等污染元素,采用特级高铝矾土、棕刚玉为主要原料,特级高铝矾土、棕刚玉骨料由一定的颗粒级配组成,以棕刚玉粉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥为基质组成,并添加适量的高效复合分散剂配制而成。具体的:本发明所述的一种环保型镍铁回转窑用耐火浇注料,其组成原料的重量份为:特级矾土40-45份,粒径在8-3mm;棕刚玉35-40份,粒径3-0.088mm;锆英石粉0-4份,粒径≤0.088mm;二氧化硅微粉1-3份,粒径在≤2μ;氧化铝微粉3-5份,粒径在≤1.5μ;纯铝酸钙水泥3-7份,粒径在0≤0.045mm;复合减水剂0-0.5份
实施例一:振动成型:先将棕刚玉粉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥制成预混合料A,然后在混料机中将各种粒度的骨料B搅拌均匀,及复合减水剂制成预混合料C,把A料、B料和C料分别包装。回转窑用耐火浇注料按组成原料的重量份为:特级矾土,粒径在8-3mm,加入量为45%;棕刚玉,粒径在3-0.088mm,加入量为40%;锆英石粉,粒径在≤0.088mm,加入量为3%;二氧化硅微粉,粒径在≤2μ,加入量为3%;氧化铝微粉,粒径在≤1.5μ,加入量为4%;纯铝酸钙水泥,粒径在0≤0.045mm,加入量为5%;外加复合减水剂,加入量为0.3%。
该实施例所述一种环保型镍铁回转窑用耐火浇注料制品与现有镍铁回转窑用耐火砖的性能参数比较见表1
表1
实施例二:自流成型:先将棕刚玉粉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥制成预混合料A,然后在混料机中将各种粒度的骨料B搅拌均匀,及复合减水剂制成预混合料C,把A料、B料和C料分别包装。
回转窑用耐火浇注料按组成原料的重量份进行配置:特级矾土,粒径在8-3mm,加入量为40%;棕刚玉,粒径在3-0.088mm,加入量为45%;锆英石粉,粒径在≤0.088mm,加入量为3%;二氧化硅微粉,粒径在≤2μ,加入量为2%;氧化铝微粉,粒径在≤1.5μ,加入量为5%;纯铝酸钙水泥,粒径在≤0.045mm,加入量为5%;外加复合减水剂,加入量为0.5%。
该实施例所述一种环保型镍铁回转窑用耐火浇注料制品与现有镍铁回转窑用耐火砖的性能参数比较见表2:
表2
综上所述,本发明所述环保型镍铁回转窑用耐火浇注料还具有如下优点见表3:
主要特征表现 本产品 耐火砖
生产与施工效率 较高
施工后特点 无缝连接 有缝隙
是否经高温烧制 不需要 需要
能源问题 节能 极大浪费
有害元素 无污染 一般含有铬元素
强度 较好
热震后强度保持率 较高 较差
导热率 很小 较大
抗侵蚀性 较好 较好
表3
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。

Claims (4)

1.一种环保型镍铁回转窑用耐火浇注料,其特征在于组成原料的重量份为:特级矾土40-45份,粒径在8-3mm;棕刚玉35-40份,粒径3-0.088mm;锆英石粉0-4份,粒径≤0.088mm;二氧化硅微粉1-3份,粒径在≤2μ;氧化铝微粉3-5份,粒径在≤1.5μ;纯铝酸钙水泥3-7份,粒径在0≤0.045mm;复合减水剂0-0.5份。
2.根据权利要求1所述环保型镍铁回转窑用耐火浇注料,其特征在于:所述特级矾土45份,粒径在8-3mm;棕刚玉40份,粒径3-0.088mm;锆英石粉3份,粒径≤0.088mm;二氧化硅微粉3份,粒径在≤2μ;氧化铝微粉4份,粒径在≤1.5μ;纯铝酸钙水泥5份,粒径在0≤0.045mm;复合减水剂0.3份。
3.根据权利要求1所述环保型镍铁回转窑用耐火浇注料,其特征在于:所述特级矾土40份,粒径在8-3mm;棕刚玉45份,粒径3-0.088mm;锆英石粉3份,粒径≤0.088mm;二氧化硅微粉2份,粒径在≤2μ;氧化铝微粉5份,粒径在≤1.5μ;纯铝酸钙水泥5份,粒径在0≤0.045mm;复合减水剂0.5份。
4.一种制备权利要求1-3任一权利要求所述环保型镍铁回转窑用耐火浇注料的方法,其特征在于包括如下步骤:
S1:将棕刚玉粉、锆英石粉、二氧化硅微粉、氧化铝微粉、纯铝酸钙水泥制成相应粒径的物料;
S2:将S1的物料称量取量并均匀混合制成预混合料A;
S3:将特级矾土制成相应粒径的物料称量取量制成骨料B;
S4:将复合减水剂取量制成预混合料C;
S5:将预混合料A、骨料B、预混合料C分别包装入袋。
S6:将预混合料A、骨料B、预混合料C均匀混合的同时加入常温水。
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Application publication date: 20191231