CN111333426A - 一种用于重烧窑喷火口的耐火烧注料及其制备方法 - Google Patents

一种用于重烧窑喷火口的耐火烧注料及其制备方法 Download PDF

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CN111333426A
CN111333426A CN202010247844.1A CN202010247844A CN111333426A CN 111333426 A CN111333426 A CN 111333426A CN 202010247844 A CN202010247844 A CN 202010247844A CN 111333426 A CN111333426 A CN 111333426A
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张委铭
毕德玉
毕成
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Haicheng Guotian Mining Co ltd
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Abstract

本发明涉及耐火材料生产技术领域，尤其是一种用于重烧窑喷火口的耐火烧注料及其制备方法，步骤为：（1）加水混合均匀制得砂浆；（2）浇注，升温，预热后向窑内充满氩气，再升温，高温静置，降温度，恒温养护，自然冷却。本发明的有益效果如下：1）采用铝硅质耐高温组分相配比，多段加热和氩气充填技术，提高重烧窑喷火口的抗热震性、常温耐压强度和荷重软化温度，进而延长窑炉的连续安全运行寿命；2）对比传统高铝碳类喷火口耐火材料，气孔率降低4‑6%、常温耐压强度提高5‑10MPa、抗热震性提升10‑15次、荷重软化温度提高5‑20℃、耐火度提高5‑20℃，窑炉运行寿命延长5‑8%。

Description

一种用于重烧窑喷火口的耐火烧注料及其制备方法
技术领域
本发明涉及耐火材料生产技术领域，尤其是一种用于重烧窑喷火口的耐火烧注料及其制备方法。
背景技术
菱镁矿是一种碳酸镁矿物，以菱镁矿为原料制备的各种镁盐产品在冶金、化工、建材等行业应用广泛。利用菱镁矿生产重烧镁砂的主要流程包括：轻烧粉煅烧后获得的轻烧粉进行磨矿，然后压球，压球后的镁球进入重烧窑中进行煅烧，煅烧温度达到1350℃以上，如果以高纯轻烧MgO为原料，压成球团，在1750℃至1850℃高温下煅烧，形成烧结程度好，结晶良好，化学纯度高的MgO，这种方法主要生产中档镁砂，在辽宁省中档竖窑和高纯油竖窑大致有近200座，产能100多万吨。
竖窑中喷火口附近内衬砖因为温度高，对耐热震性有更高的要求，重烧窑喷火口的耐火烧注料性能对竖窑的使用寿命有直接影响。
发明内容
本发明的目的是提供一种用于重烧窑喷火口的耐火烧注料及其制备方法，克服现有技术的不足，采用铝硅质耐高温组分相配比，多段加热和氩气充填技术，提高重烧窑喷火口的抗热震性、常温耐压强度和荷重软化温度，进而延长窑炉的连续安全运行寿命。
为实现上述目的，本发明通过以下技术方案实现：
技术方案之一：一种用于重烧窑喷火口的耐火烧注料，其特征在于，包括下列耐火材料：莫来石45～48％、碳化硅15～20%、碳化硅微粉5～8%、二氧化硅微粉2～5%、刚玉微粉3～6％、聚磷酸盐0.2～0.8%、氟化铝3～5%、氯化铝3～5%、氯化钙0.4～1.0%、铝酸钙水泥3～7%。
所述莫来石原料中Al2O3≥62%，二氧化硅微粉原料中SiO2≥93%，碳化硅原料中SiC≥96%，刚玉原料中Al2O3≥97%。
所述碳化硅微粉平均粒径小于10um，二氧化硅微粉平均粒径小于1um，刚玉微粉平均粒径小于20um。
所述莫来石经拣选分级-破碎-筛分-除铁后获得，按照粒径进行分级为 8mm-5mm大颗粒料30%，5mm-3mm中颗粒料35%，3mm-1mm细颗粒料35%。
所述聚磷酸盐是六偏磷酸钠。
技术方案之二：一种用于重烧窑喷火口的耐火烧注料的制备方法，其特征在于，具体制备步骤为：
（1）将全部配方量的组份投入搅拌机中加入总质量的10-20%的水，混合均匀制得砂浆；
（2）将砂浆浇注到重烧窑喷火口处模板中，升高窑内温度至100～110℃，恒温预热40～50min，预热后向窑内充满氩气，再升高窑内温度至800～900℃，高温静置100～120min，降低窑内温度至400～500℃，恒温养护2～3h，自然冷却制得重烧窑喷火口。
优选的配方组分重量百分比为，莫来石47％、刚玉微粉6％、碳化硅20%、氟化铝5%、氯化铝5%、二氧化硅微粉4%、碳化硅微粉5%、聚磷酸盐0.6%、氯化钙0.4%、铝酸钙水泥7%。所述水的添加量优选值为配方总质量的12%。
技术方案中，铝酸钙水泥和聚磷酸盐起到粘结剂的作用，颗粒级和微粉粒级的组份在混合物中起到骨料和微观增强的作用，多段加热工艺避免升温过快带来的微裂纹倾向，氩气可减少氧化反应，从而解决传统高铝制品较大体积膨胀、气孔率大、抗热震性不良等问题。
与现有技术相比，本发明的有益效果如下：
1）采用铝硅质耐高温组分相配比，多段加热和氩气充填技术，提高重烧窑喷火口的抗热震性、常温耐压强度和荷重软化温度，进而延长窑炉的连续安全运行寿命；2）对比传统高铝碳类喷火口耐火材料，气孔率降低4-6%、常温耐压强度提高5-10MPa、抗热震性提升10-15次、荷重软化温度提高5-20℃、耐火度提高5-20℃，窑炉运行寿命延长5-8%。
具体实施方式
下面结合实施例对本发明的实施方式作进一步说明：
本发明一种用于重烧窑喷火口的耐火烧注料的制备方法具体制备步骤为：
（1）将全部配方量的组份投入搅拌机中加入水，混合均匀制得砂浆；
（2）将砂浆浇注到重烧窑喷火口处模板中，升高窑内温度至100～110℃，恒温预热40～50min，预热后向窑内充满氩气，再升高窑内温度至850℃，高温静置120min，降低窑内温度至400～500℃，恒温养护3h，自然冷却制得重烧窑喷火口。
实施例1
配方组分中，莫来石48公斤、刚玉微粉5公斤、碳化硅20公斤、氟化铝4.5公斤、氯化铝4.5公斤、二氧化硅微粉5公斤、碳化硅微粉6公斤、聚磷酸盐0.6公斤、氯化钙0.4公斤、铝酸钙水泥5公斤。水的添加量优选值为配方总质量的11公斤。 实施例2
配方组分中，莫来石47公斤、刚玉微粉6公斤、碳化硅20公斤、氟化铝5公斤、氯化铝5公斤、二氧化硅微粉4公斤、碳化硅微粉5公斤、聚磷酸盐0.6公斤、氯化钙0.4公斤、铝酸钙水泥7公斤。水的添加量优选值为配方总质量的12公斤。
实施例3
配方组分中，莫来石46公斤、刚玉微粉6公斤、碳化硅19公斤、氟化铝5公斤、氯化铝5公斤、二氧化硅微粉5公斤、碳化硅微粉6.2公斤、聚磷酸盐0.8公斤、氯化钙1.0公斤、铝酸钙水泥6公斤。水的添加量优选值为配方总质量的10公斤。
上述实施例中，莫来石原料中Al2O3≥62%，二氧化硅微粉原料中SiO2≥93%，碳化硅原料中SiC≥96%，刚玉原料中Al2O3≥97%。碳化硅微粉平均粒径小于10um，二氧化硅微粉平均粒径小于1um，刚玉微粉平均粒径小于20um。莫来石经拣选分级-破碎-筛分-除铁后获得，按照粒径进行分级为 8mm-5mm大颗粒料30%，5mm-3mm中颗粒料35%，3mm-1mm细颗粒料35%。氟化铝、氯化铝、聚磷酸盐、氯化钙均为分析纯制品。聚磷酸盐是六偏磷酸钠。六偏磷酸钠对于某些金属离子(如钙、镁等)有生成可溶性络合物的能力，可以起到结合剂的作用。

Claims (8)

1.一种用于重烧窑喷火口的耐火烧注料，其特征在于，包括下列耐火材料：莫来石45～48％、碳化硅15～20%、碳化硅微粉5～8%、二氧化硅微粉2～5%、刚玉微粉3～6％、聚磷酸盐0.2～0.8%、氟化铝3～5%、氯化铝3～5%、氯化钙0.4～1.0%、铝酸钙水泥3～7%。
2.根据权利要求1所述的一种用于重烧窑喷火口的耐火烧注料，其特征在于，所述莫来石原料中Al2O3≥62%，二氧化硅微粉原料中SiO2≥93%，碳化硅原料中SiC≥96%，刚玉原料中Al2O3≥97%。
3.根据权利要求1或2所述的一种用于重烧窑喷火口的耐火烧注料，其特征在于，所述碳化硅微粉平均粒径小于10um，二氧化硅微粉平均粒径小于1um，刚玉微粉平均粒径小于20um。
4.根据权利要求1所述的一种用于重烧窑喷火口的耐火烧注料，其特征在于，所述莫来石经拣选分级-破碎-筛分-除铁后获得，按照粒径进行分级为 8mm-5mm大颗粒料30%，5mm-3mm中颗粒料35%，3mm-1mm细颗粒料35%。
5.根据权利要求1所述的一种用于重烧窑喷火口的耐火烧注料，其特征在于，所述聚磷酸盐是六偏磷酸钠。
6.一种用于重烧窑喷火口的耐火烧注料的制备方法，其特征在于，具体制备步骤为：
（1）将全部配方量的组份投入搅拌机中加入总质量的10-20%的水，混合均匀制得砂浆；
（2）将砂浆浇注到重烧窑喷火口处模板中，升高窑内温度至100～110℃，恒温预热40～50min，预热后向窑内充满氩气，再升高窑内温度至800～900℃，高温静置100～120min，降低窑内温度至400～500℃，恒温养护2～3h，自然冷却制得重烧窑喷火口。
7.根据权利要求6所述的一种用于重烧窑喷火口的耐火烧注料的制备方法，其特征在于：优选的配方组分重量百分比为，莫来石47％、刚玉微粉6％、碳化硅20%、氟化铝5%、氯化铝5%、二氧化硅微粉4%、碳化硅微粉5%、聚磷酸盐0.6%、氯化钙0.4%、铝酸钙水泥7%。
8.根据权利要求6所述的一种用于重烧窑喷火口的耐火烧注料的制备方法，其特征在于：所述水的添加量优选值为配方总质量的12%。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701764A (zh) * 2012-06-08 2012-10-03 安徽瑞泰新材料科技有限公司 一种烧结铝硅质耐火材料及其制备方法
CN102701763A (zh) * 2012-06-08 2012-10-03 安徽瑞泰新材料科技有限公司 一种低铝烧结铝硅质耐火材料及其制备方法
CN103011852A (zh) * 2012-11-26 2013-04-03 中国铝业股份有限公司 一种刚玉质浇注料制品的无烧结致密化方法
CN107602090A (zh) * 2017-09-20 2018-01-19 江西萍乡龙发实业股份有限公司 中铝承重陶瓷条梁制备方法
CN108503373A (zh) * 2017-02-27 2018-09-07 宝山钢铁股份有限公司 高炉铁口修复用耐火浇注料

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701764A (zh) * 2012-06-08 2012-10-03 安徽瑞泰新材料科技有限公司 一种烧结铝硅质耐火材料及其制备方法
CN102701763A (zh) * 2012-06-08 2012-10-03 安徽瑞泰新材料科技有限公司 一种低铝烧结铝硅质耐火材料及其制备方法
CN103011852A (zh) * 2012-11-26 2013-04-03 中国铝业股份有限公司 一种刚玉质浇注料制品的无烧结致密化方法
CN108503373A (zh) * 2017-02-27 2018-09-07 宝山钢铁股份有限公司 高炉铁口修复用耐火浇注料
CN107602090A (zh) * 2017-09-20 2018-01-19 江西萍乡龙发实业股份有限公司 中铝承重陶瓷条梁制备方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
古练祥等著: "《耐火纤维》", 31 December 1982, 冶金工业出版社 *
干勇主编: "《现代连续铸钢实用手册》", 31 March 2010, 冶金工业出版社 *

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