CN114773035A - 一种钢包抗侵蚀镁质耐火泥 - Google Patents

一种钢包抗侵蚀镁质耐火泥 Download PDF

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CN114773035A
CN114773035A CN202210350691.2A CN202210350691A CN114773035A CN 114773035 A CN114773035 A CN 114773035A CN 202210350691 A CN202210350691 A CN 202210350691A CN 114773035 A CN114773035 A CN 114773035A
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powder
ladle
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张顺卿
楚得财
戴晓鹏
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Zhengzhou Shuntong New Refractory Materials Co ltd
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Abstract

本发明提供了一种钢包抗侵蚀镁质耐火泥，包括以下重量份数配比的原料：镁砂70‑85份、铝镁尖晶石细粉5‑15份、氧化铝微粉3‑8份、二氧化硅微粉1‑5份、铝酸镁凝胶粉3‑8份、碳化硅细粉2‑6份、氧化锆细粉2‑6份、减水剂1‑5份、增塑剂2‑3份和保存剂3‑5份。该发明对钢包用各种耐火砖有更好的粘结性能；在各个温度阶段具备较好强度和耐高温性能，对熔融钢水与钢渣的侵蚀抵抗效果好；收缩小，致密性好，更好的抗渗透性能显著改善了耐火砖缝的薄弱环节，减少钢包耐材事故，提高钢包整体寿命和安全。

Description

一种钢包抗侵蚀镁质耐火泥
技术领域
本发明涉及耐火泥领域，尤其是涉及了一种钢包抗侵蚀镁质耐火泥。
背景技术
耐火泥又称火泥或接缝料(粉装物)，用作耐火制品砌体的砌缝材料，一般由耐火粉料、结合剂和外加剂组成，按材质可分为黏土质、高铝质、硅质和镁质耐火泥等。钢包是钢水精炼过程中盛放钢水的器具，钢包工作衬大多数由耐火砖砌筑而成，而这些耐火砖必须用耐火泥粘结起来成为一个完整的包衬，如果火泥性能不好，精炼过程中耐火砖缝就会成为最薄弱环节而被冲刷侵蚀掉，包造成钢包穿漏事故。
目前钢包包衬使用的耐火泥浆，在对钢水的冲刷与钢渣侵蚀承受方面效果不理想，砖缝处的残厚明显比包衬的砖本体残厚低，普通耐火泥浆加水量大，在高温下容易产生收缩，填补砖缝时难以饱满填充，容易在砖缝处产生钢水的渗透夹钢。
发明内容
为了解决背景技术中所存在的问题，本发明提出了一种钢包抗侵蚀镁质耐火泥。
一种钢包抗侵蚀镁质耐火泥，包括以下重量份数配比的原料：镁砂70-85 份、铝镁尖晶石细粉5-15份、氧化铝微粉3-8份、二氧化硅微粉1-5份、铝酸镁凝胶粉3-8份、碳化硅细粉2-6份、氧化锆细粉2-6份、减水剂1-5份、增塑剂2-3份和保存剂3-5份。
基于上述，包括以下重量份数配比的原料：镁砂75份、铝镁尖晶石细粉8 份、氧化铝微粉4份、二氧化硅微粉3份、铝酸镁凝胶粉4份、碳化硅细粉3 份、氧化锆细粉3份、减水剂3份、增塑剂2份和保存剂3份。
基于上述，包括以下重量份数配比的原料：镁砂80份、铝镁尖晶石细粉10 份、氧化铝微粉5份、二氧化硅微粉2份、铝酸镁凝胶粉3份、碳化硅细粉3 份、氧化锆细粉3份、减水剂4份、增塑剂2份和保存剂3份。
基于上述，所述镁砂为烧结镁砂或电熔镁砂，所述镁砂的MgO含量≥98％，所述镁砂的粒度为0.02-0.07mm。
基于上述，所述氧化铝微粉的氧化铝含量≥98％，粒径为1-2μm。
基于上述，所述二氧化硅微粉的二氧化硅含量≥97％，粒径为0.1-0.5μm。
基于上述，所述铝酸镁凝胶粉中的氧化镁和氧化铝含量总和≥90％，粒径为0.04-0.07mm。
基于上述，所述碳化硅细粉的碳化硅含量≥97％，粒径为0.4-0.6mm。
基于上述，所述氧化锆细粉的氧化锆含量≥95％，粒径为0.04-0.07mm。
基于上述，减水剂为聚磷酸盐或聚羧酸，所述增塑剂为羧甲基纤维素或黄糊精，所述保存剂为草酸、柠檬酸或硼酸。
本发明相对现有技术具有突出的实质性特点和显著的进步，具体的说，本发明对钢包用各种耐火砖有更好的粘结性能；在各个温度阶段具备较好强度和耐高温性能，对熔融钢水与钢渣的侵蚀抵抗效果好；收缩小，致密性好，更好的抗渗透性能显著改善了耐火砖缝的薄弱环节，减少钢包耐材事故，提高钢包整体寿命和安全。
具体实施方式
下面将结合本发明实施例中，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付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。
一种钢包抗侵蚀镁质耐火泥，包括以下重量份数配比的原料：镁砂70-85 份、铝镁尖晶石细粉5-15份、氧化铝微粉3-8份、二氧化硅微粉1-5份、铝酸镁凝胶粉3-8份、碳化硅细粉2-6份、氧化锆细粉2-6份、减水剂1-5份、增塑剂2-3份和保存剂3-5份。
具体的，所述镁砂为烧结镁砂或电熔镁砂，所述镁砂的MgO含量≥98％，所述镁砂的粒度为0.02-0.07mm。所述氧化铝微粉的氧化铝含量≥98％，粒径为1-2 μm。所述二氧化硅微粉的二氧化硅含量≥97％，粒径为0.1-0.5μm。所述铝酸镁凝胶粉中的氧化镁和氧化铝含量总和≥90％，粒径为0.04-0.07mm。所述碳化硅细粉的碳化硅含量≥97％，粒径为0.4-0.6mm。所述氧化锆细粉的氧化锆含量≥95％，粒径为0.04-0.07mm。减水剂为聚磷酸盐或聚羧酸，所述增塑剂为羧甲基纤维素或黄糊精，所述保存剂为草酸、柠檬酸或硼酸。
按照上述重量份数，将钢包抗侵蚀镁质耐火泥浆的制备原料混合，加入搅拌机中搅拌5分钟，均匀混合后，向混合料中加入占混合料总重20％的水，继续搅拌10分钟，直至混合料成为均匀泥浆，得到钢包抗侵蚀镁质耐火泥。
在优选方案中，该钢包抗侵蚀镁质耐火泥的原料重量份数配比具体为：镁砂75份、铝镁尖晶石细粉8份、氧化铝微粉4份、二氧化硅微粉3份、铝酸镁凝胶粉4份、碳化硅细粉3份、氧化锆细粉3份、减水剂3份、增塑剂2份和保存剂3份。按照上述重量份数，将钢包抗侵蚀镁质耐火泥浆的制备原料混合，加入搅拌机中搅拌5分钟，均匀混合后，向混合料中加入占混合料总重20％的水，继续搅拌10分钟，直至混合料成为均匀泥浆，得到钢包抗侵蚀镁质耐火泥。
该钢包抗侵蚀镁质耐火泥在钢包砌筑时使用在耐火砖之间，钢包使用后砖缝处残厚与耐火砖残厚差为2mm，钢包耐火砖的砖缝内未见夹钢现象，也即该钢包抗侵蚀镁质耐火泥可提高砖缝处的工作层残厚，可阻塞钢水的渗透，该钢包抗侵蚀镁质耐火泥满足钢包使用。
在另一优选方案中，该钢包抗侵蚀镁质耐火泥的原料重量份数配比具体为：镁砂80份、铝镁尖晶石细粉10份、氧化铝微粉5份、二氧化硅微粉2份、铝酸镁凝胶粉3份、碳化硅细粉3份、氧化锆细粉3份、减水剂4份、增塑剂2 份和保存剂3份。按照上述重量份数，将钢包抗侵蚀镁质耐火泥浆的制备原料混合，加入搅拌机中搅拌5分钟，均匀混合后，向混合料中加入占混合料总重 20％的水，继续搅拌10分钟，直至混合料成为均匀泥浆，得到钢包抗侵蚀镁质耐火泥。
该钢包抗侵蚀镁质耐火泥在钢包砌筑时使用在耐火砖之间，钢包使用后砖缝处残厚与耐火砖残厚差为1.3mm，钢包耐火砖的砖缝内未见夹钢现象，也即该钢包抗侵蚀镁质耐火泥可提高砖缝处的工作层残厚，可阻塞钢水的渗透，该钢包抗侵蚀镁质耐火泥满足钢包使用。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何标记视为限制所涉及的权利要求。

Claims (10)

1.一种钢包抗侵蚀镁质耐火泥，其特征在于，包括以下重量份数配比的原料：镁砂70-85份、铝镁尖晶石细粉5-15份、氧化铝微粉3-8份、二氧化硅微粉1-5份、铝酸镁凝胶粉3-8份、碳化硅细粉2-6份、氧化锆细粉2-6份、减水剂1-5份、增塑剂2-3份和保存剂3-5份。
2.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于，包括以下重量份数配比的原料：镁砂75份、铝镁尖晶石细粉8份、氧化铝微粉4份、二氧化硅微粉3份、铝酸镁凝胶粉4份、碳化硅细粉3份、氧化锆细粉3份、减水剂3份、增塑剂2份和保存剂3份。
3.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于，包括以下重量份数配比的原料：镁砂80份、铝镁尖晶石细粉10份、氧化铝微粉5份、二氧化硅微粉2份、铝酸镁凝胶粉3份、碳化硅细粉3份、氧化锆细粉3份、减水剂4份、增塑剂2份和保存剂3份。
4.根据权利要求1任一项所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述镁砂为烧结镁砂或电熔镁砂，所述镁砂的MgO含量≥98％，所述镁砂的粒度为0.02-0.07mm。
5.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述氧化铝微粉的氧化铝含量≥98％，粒径为1-2μm。
6.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述二氧化硅微粉的二氧化硅含量≥97％，粒径为0.1-0.5μm。
7.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述铝酸镁凝胶粉中的氧化镁和氧化铝含量总和≥90％，粒径为0.04-0.07mm。
8.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述碳化硅细粉的碳化硅含量≥97％，粒径为0.4-0.6mm。
9.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：所述氧化锆细粉的氧化锆含量≥95％，粒径为0.04-0.07mm。
10.根据权利要求1所述的钢包抗侵蚀镁质耐火泥，其特征在于：减水剂为聚磷酸盐或聚羧酸，所述增塑剂为羧甲基纤维素或黄糊精，所述保存剂为草酸、柠檬酸或硼酸。
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Publication number Priority date Publication date Assignee Title
CN115650703A (zh) * 2022-11-04 2023-01-31 辽宁利尔镁质合成材料股份有限公司 一种镁质浇注料及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115650703A (zh) * 2022-11-04 2023-01-31 辽宁利尔镁质合成材料股份有限公司 一种镁质浇注料及其制备方法

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