CN109678553A - 锂尾矿发泡陶瓷保温板的制备方法 - Google Patents

锂尾矿发泡陶瓷保温板的制备方法 Download PDF

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CN109678553A
CN109678553A CN201910084227.1A CN201910084227A CN109678553A CN 109678553 A CN109678553 A CN 109678553A CN 201910084227 A CN201910084227 A CN 201910084227A CN 109678553 A CN109678553 A CN 109678553A
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贾小华
刘欢
郭明军
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Yanshan Tangshan Iron And Steel Co Ltd
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Abstract

本发明涉及一种锂尾矿发泡陶瓷保温板的制备方法，步骤：将锂尾矿、高铝硬质高岭土、页岩、碳化硅破碎，除杂，粒度控制在40~60目；按重量百分比称取基料：锂尾矿60－65％，高铝硬质高岭土20－30％，熔剂性原料页岩15－20％；成孔剂碳化硅按基料总重的0.4%称取；按料：球：水=1：2：0.6的比例入球磨机湿磨，细度控制万孔筛余小于1.5％；喷雾造粒，粒径控制在60目～120目≥80%，含水率<1.5%；造粒后的粉料陈腐24小时后，用布料机在模具内布料；经辊道窑或隧道窑在满足配方形成液相及成孔剂分解的温度曲线下烧成产品。本发明能够生产密度小、强度高、导热系数低的外墙陶瓷保温板。

Description

锂尾矿发泡陶瓷保温板的制备方法
技术领域
本发明涉及一种锂尾矿发泡陶瓷保温板的制备方法，属于工业固体废弃物的利用技术。
背景技术
锂尾矿利用途径窄，会对环境污染产生一定的影响，不利于可持续发展。因此，探索利用锂尾矿制备环保型建筑材料对改善居民生活环境，提升矿产资源利用率具有极大的经济和社会效应。
锂尾矿是硅质长石类原料，是一种很好的熔剂性原料，其成分同发泡陶瓷的组成接近，可以作为发泡陶瓷的主要原料，添加一些必要的辅助原料来研究生产发泡陶瓷。中国专利CN 108911778 A提出了“一种锂尾矿轻质陶瓷板材的制作方法”，该方法能充分利用锂尾渣，制备出的轻质陶瓷板材能够用作建筑隔热保温材料、内外饰材料，具有防火、隔热、吸声特性，但强度较低，应用场景具有极大的限制。
发明内容
本发明要解决的技术问题是提供一种锂尾矿发泡陶瓷保温板的制备方法，该方法能够生产密度小、强度高、导热系数低的外墙陶瓷保温板。
本发明解决其技术问题采用的技术方案是：
一种锂尾矿发泡陶瓷保温板的制备方法，原料由基料和成孔剂组成；包括如下步骤：
（1）原料处理：将锂尾矿、高铝硬质高岭土、页岩、碳化硅破碎，除杂，粒度控制在40~60目；
（2）配料：基料按重量百分比称取：锂尾矿60－65％，高铝硬质高岭土20－30％，熔剂性原料页岩15－20％；成孔剂碳化硅按基料总重的0.4%称取；
（3）球磨机湿磨：按料：球：水=1：2：0.6的比例入球磨罐，混合料经球磨机湿磨，细度控制万孔筛余小于1.5％；
（4）造粒：将湿磨后的混合料，喷雾造粒，粒径控制在60目～120目 ≥ 80% ，干燥后含水率< 1.5% ；
（5）布料：造粒后的粉料通过输送机送至料仓，经陈腐24小时后，用布料机在模具内布料，布料前，在模具四周和底部用耐火纸铺贴，布料深度为模具深度的三分之二；
（6）烧成：经辊道窑或隧道窑在满足配方形成液相及成孔剂分解的温度曲线下烧成产品。
采用上述技术方案的本发明，与现有技术相比，有益效果是：
本发明采用混合料入球磨机湿磨后喷雾造粒，相比CN 108911778 A采用的各原料单独干法粉碎再混合造粒，具有混料均匀、后期发泡孔隙均匀的优点，烧制过程中不需要急冷，直接以6℃/min的烧成速率烧至烧成温度（1170℃~1190℃）后，自然冷却，大大缩短了烧成周期；本发明生产的外墙陶瓷保温板性能优异，具体性能：体积密度小（≤0.2-0.4g/cm3），导热系数低（≤0.09w/m.k），强度高（抗压强度为1.5-2Mpa，抗折强度>0.5MPa）。
具体的实施方式
以下结合实施例详述本发明。
实施例1：
按重量份数计，将60份锂尾矿、23份高铝硬质高岭土、17份熔剂性原料页岩、成0.4份孔剂碳化，经球磨、喷雾造粒后布料，布料为600mm×600mm×25mm的规格，控制含水率＜0.1％，入辊道窑在1190℃烧成成品。
实施例2：
按重量份数计，将65份锂尾矿、20份高铝硬质高岭土、5份熔剂性原料页岩、0.4份成孔剂碳化硅，经球磨、喷雾造粒后布料，布料为600mm×600mm×25mm的规格，经干燥后，控制含水率＜0.1％，入辊道窑在1170℃烧成成品。
上述实施例1、2制备的发泡陶瓷保温板，体积密度为0.2-0.4g/cm3，导热系数为0.08-0.1W/M.K，抗压强度为1.5-2Mpa，抗折强度>0.5Mpa，是一种优良的建筑外墙陶瓷保温板。
以上所述仅为本发明较佳可行的实施例，并非因此局限本发明的权利范围，凡运用本发明说明书内容所作的等效变化，均包含于本发明的权利范围之内。

Claims (1)

1.一种锂尾矿发泡陶瓷保温板的制备方法，原料由基料和成孔剂组成；其特征在于，包括如下步骤：
（1）原料处理：将锂尾矿、高铝硬质高岭土、页岩、碳化硅破碎，除杂，粒度控制在40~60目；
（2）配料：基料按重量百分比称取：锂尾矿60－65％，高铝硬质高岭土20－30％，熔剂性原料页岩15－20％；成孔剂碳化硅按基料总重的0.4%称取；
（3）球磨机湿磨：按料：球：水=1：2：0.6的比例入球磨罐，混合料经球磨机湿磨，细度控制万孔筛余小于1.5％；
（4）造粒：将湿磨后的混合料，喷雾造粒，粒径控制在60目～120目 ≥ 80% ，干燥后含水率< 1.5% ；
（5）布料：造粒后的粉料通过输送机送至料仓，经陈腐24小时后，用布料机在模具内布料，布料前，在模具四周和底部用耐火纸铺贴，布料深度为模具深度的三分之二；
（6）烧成：经辊道窑或隧道窑在满足配方形成液相及成孔剂分解的温度曲线下烧成产品。
CN201910084227.1A 2019-01-29 2019-01-29 锂尾矿发泡陶瓷保温板的制备方法 Pending CN109678553A (zh)

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CN116462522A (zh) * 2023-06-19 2023-07-21 湖南永杉锂业有限公司 一种制备匣钵的方法
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CN111205074A (zh) * 2020-01-13 2020-05-29 山东晟世达科技有限公司 一种含堇青石骨架的发泡陶瓷及其制备方法
CN111205074B (zh) * 2020-01-13 2022-08-05 山东晟世达科技有限公司 一种含堇青石骨架的发泡陶瓷及其制备方法
CN111533450A (zh) * 2020-05-07 2020-08-14 江西鼎盛新材料科技有限公司 利用锂云母尾矿生产的微晶泡沫板及其制备方法
WO2023216807A1 (zh) * 2022-05-09 2023-11-16 北京工业大学 一种锂云母尾泥全废料制备生态发泡陶瓷的方法
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US12006268B2 (en) * 2022-05-09 2024-06-11 Beijing University Of Technology Method for preparing ecological foamed ceramic from lepidolite filter mud whole waste
CN116462522A (zh) * 2023-06-19 2023-07-21 湖南永杉锂业有限公司 一种制备匣钵的方法
CN116462522B (zh) * 2023-06-19 2023-08-22 湖南永杉锂业有限公司 一种制备匣钵的方法

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