CN109456070A - 一种适用于耐火材料表面的高发射率涂层 - Google Patents

一种适用于耐火材料表面的高发射率涂层 Download PDF

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CN109456070A
CN109456070A CN201811381292.2A CN201811381292A CN109456070A CN 109456070 A CN109456070 A CN 109456070A CN 201811381292 A CN201811381292 A CN 201811381292A CN 109456070 A CN109456070 A CN 109456070A
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high emissivity
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孙洪飞
李和发
祝显伟
邱质彬
雒晓涛
马强
全亮
毕明胤
常英杰
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Xuzhen New Energy Technology (shanghai) Co Ltd
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Abstract

本发明公开了一种适用于耐火材料表面的高发射率涂层，所述涂层的成分包括氧化铝、氧化铬、碳化硅、氧化铁、膨润土、硅酸铝。本发明本发明适用于电力、石油、石化、冶金等行业的电站锅炉、工业锅炉和窑炉的高温辐射卫燃带受热面、向火侧表面，本发明具有高发射率、抗沾污结渣、耐高温腐蚀、抗氧化、抗流速磨损功能，提高受热面的换热能力。

Description

一种适用于耐火材料表面的高发射率涂层
技术领域
本发明涉及耐火材料涂层技术领域，具体为一种适用于耐火材料表面的 高发射率涂层。
背景技术
耐火度不低于1580℃的一类无机非金属材料，耐火度是指耐火材料锥形 体试样在没有荷重情况下，抵抗高温作用而不软化熔倒的摄氏温度，但仅以 耐火度来定义已不能全面描述耐火材料了，1580℃并不是绝对的，现定义为 凡物理化学性质允许其在高温环境下使用的材料称为耐火材料，耐火材料广 泛用于冶金、化工、石油、机械制造、硅酸盐、动力等工业领域，在冶金工 业中用量最大，占总产量的50％～60％。
现有技术中，用于电力、石油、石化、冶金等行业的电站锅炉、工业 锅炉和窑炉的高温辐射耐火材料向火侧表面的涂层存在的不足之处在于发 射率较低，抗沾污结渣、耐高温腐蚀、抗流速磨损能力较差。
发明内容
本发明的目的在于提供一种适用于耐火材料表面的高发射率涂层，具备 发射率高，抗沾污结渣、耐高温腐蚀、抗流速磨损能力强的优点，解决了 现有的适用于耐火材料表面的高发射率涂层不具备发射率高、抗沾污结渣、 耐高温腐蚀以及抗流速磨损能力强的问题。
为实现上述目的，本发明提供如下技术方案：一种适用于耐火材料表面 的高发射率涂层，所述涂层的成分包括氧化铝、氧化铬、碳化硅、氧化铁、 膨润土、硅酸铝。
优选的，所述涂层的成分还包括氧化镧、氧化镝、氧化钇。
优选的，所述涂层各成分所占的重量份数为：氧化镧1-5、氧化镝1-5、 氧化钇15-20、氧化铝3-5、氧化铬5-10、碳化硅10-15、氧化铁3-5、膨 润土15-20、硅酸铝30-40。
优选的，所述氧化镧、氧化镝、氧化钇、氧化铝、氧化铬、碳化硅、 氧化铁、膨润土、硅酸铝的粒度为100纳米-300纳米。
优选的，所述涂层各成分所占的重量份数为：氧化镧2、氧化镝2、氧 化钇19、氧化铝4、氧化铬8、碳化硅13、氧化铁4、膨润土18、硅酸铝 30。
与现有技术相比，本发明的有益效果如下：
本发明本发明适用于电力、石油、石化、冶金等行业的电站锅炉、工 业锅炉和窑炉的高温辐射卫燃带受热面、向火侧表面，本发明具有高发射 率、抗沾污结渣、耐高温腐蚀、抗氧化、抗流速磨损功能，提高受热面的 换热能力。
具体实施方式
下面将结合本发明实施例，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。
一种适用于耐火材料表面的高发射率涂层，涂层的成分包括氧化铝、氧 化铬、碳化硅、氧化铁、膨润土、硅酸铝，涂层的成分还包括氧化镧、氧 化镝、氧化钇，涂层各成分所占的重量份数为，氧化镧1-5、氧化镝1-5、 氧化钇15-20、氧化铝3-5、氧化铬5-10、碳化硅10-15、氧化铁3-5、膨 润土15-20、硅酸铝30-40，氧化镧、氧化镝、氧化钇、氧化铝、氧化铬、碳化硅、氧化铁、膨润土、硅酸铝的粒度为100纳米-300纳米，涂层各成 分所占的重量份数为，氧化镧2、氧化镝2、氧化钇19、氧化铝4、氧化铬 8、碳化硅13、氧化铁4、膨润土18、硅酸铝30。
一种适用于耐火材料表面的高发射率涂的制备工艺：
制备设备：罐磨球磨机、搅拌球磨机、摩尔原子型超纯水器、热风循 环烘箱、程控箱式电炉、电热恒温水槽；
制备原料：各原料所占的重量份数为，氧化镧2、氧化镝2、氧化钇 19、氧化铝4、氧化铬8、碳化硅13、氧化铁4、膨润土18、硅酸铝30；
前处理：无机粉料常温(5-35摄氏度之间)在去离子水中浸泡4-6小时；
制备工艺：研磨-粒度检测-无机料浸泡-混合-搅拌-过滤-指标检 测-成品；
关键工艺试验：溶解、配制、合成、灼烧、粒子整合。
实现本发明目的技术方案：
1)主要配方及质量百分比：
涂层各成分所占的重量份数为，氧化镧2、氧化镝2、氧化钇19、氧化 铝4、氧化铬8、碳化硅13、氧化铁4、膨润土18、硅酸铝30。
2)配方原理：
(1)氧化铬与氧化铝的复合陶瓷，耐高温，抗沾污结渣，氧化钇等稀土 氧化物有利于陶瓷相的紧密和与基材的结合；
(2)氧化钇与氧化铝的复合陶瓷，高发射率，抗沾污结渣，氧化钇等稀 土氧化物有利于陶瓷相的紧密和与基材的结合；
(3)氧化镧、氧化镝、氧化钇、氧化铝、氧化铬、碳化硅、氧化铁、 膨润土、硅酸铝的粒度：100纳米-300纳米，正态分布；
(4)氧化镧、氧化镝保证涂层在高温状态下的光、电、磁、核特性稳定。
3)应用于耐火材料表面；
4)性能：高发射率(0.92)，抗沾污结渣，耐高温腐蚀；
5)许用温度范围：300-1800℃；
6)性能指标；
具体性能指标如下：
如下表所示，本发明能够全面提升电站锅炉、工业锅炉和窑炉的安全 与经济性，并有效降低热力型NOx的排放。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而 言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行 多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限 定。

Claims (5)

1.一种适用于耐火材料表面的高发射率涂层，其特征在于：所述涂层的成分包括氧化铝、氧化铬、碳化硅、氧化铁、膨润土、硅酸铝。
2.根据权利要求1所述的一种适用于耐火材料表面的高发射率涂层，其特征在于：所述涂层的成分还包括氧化镧、氧化镝、氧化钇。
3.根据权利要求1所述的一种适用于耐火材料表面的高发射率涂层，其特征在于：所述涂层各成分所占的重量份数为：氧化镧1-5、氧化镝1-5、氧化钇15-20、氧化铝3-5、氧化铬5-10、碳化硅10-15、氧化铁3-5、膨润土15-20、硅酸铝30-40。
4.根据权利要求1所述的一种适用于耐火材料表面的高发射率涂层，其特征在于：所述氧化镧、氧化镝、氧化钇、氧化铝、氧化铬、碳化硅、氧化铁、膨润土、硅酸铝的粒度为100纳米-300纳米。
5.根据权利要求1所述的一种适用于耐火材料表面的高发射率涂层，其特征在于：所述涂层各成分所占的重量份数为：氧化镧2、氧化镝2、氧化钇19、氧化铝4、氧化铬8、碳化硅13、氧化铁4、膨润土18、硅酸铝30。
CN201811381292.2A 2018-11-16 2018-11-16 一种适用于耐火材料表面的高发射率涂层 Pending CN109456070A (zh)

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WO2021001466A1 (en) * 2019-07-04 2021-01-07 Scg Chemicals Co., Ltd High emissivity cerium oxide coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021001466A1 (en) * 2019-07-04 2021-01-07 Scg Chemicals Co., Ltd High emissivity cerium oxide coating

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