CN106431190A - 一种节能环保的页岩散热瓷砖及其制备方法 - Google Patents
一种节能环保的页岩散热瓷砖及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种添加稀土和石墨烯的页岩散热瓷砖及其制备方法。其中瓷砖的原料包括页岩55%~65%,高岭土10%~20%,煤矸石5%~10%,粉煤灰5%~10%,钾长石4.5%~6%,富含CeO2的混合稀土2%~5%,石墨烯粉末0.5%~2%。本发明的瓷砖导热系数高,抗压能力强,节能环保,附加值高,符合市场需求。
Description
技术领域
本发明涉及地热辐射采暖地砖领域,尤其涉及一种添加稀土和石墨烯的高效散热的瓷砖。
背景技术
随着人民生活水平提高,越来越多的建筑开始选择能更好的契合体感舒适度的地热辐射采暖系统。目前现有地面辐射采暖主要有两种方式:一是低温热水地面辐射采暖;二是电采暖。
地面辐射系统通过埋设于表层地板或地砖下方的热源供热,通常热源温度可达60°C,通过将表层的地板或者地砖加热,均匀地向室内辐射热能。这种地热采暖热传导的特殊性,需要地板、地砖具有优异的热传导性能和良好的尺寸稳定性以实现均匀散热。地板或者地砖的导热系数越小,要达到相同的采暖效果,运行费用就越高,此外,较低的导热系数也导致了预热时间的加长和热能资源的耗费。然而,目前常用的地板、地砖等的散热效果并不理想。如木材的导热系数为0.04~0.12W/(m·K),传统瓷砖为1.1 W/(m·K),大理石为2.9W/(m·K),多层实木地板为0.12~0.15 W/(m·K),中密度纤维板为0.16~0.2 W/(m·K)。
发明内容
本发明的针对现有的技术缺陷,旨在提供一种散热性能优异的瓷砖及其制备方法,以达到节能环保的目标。为实现上述目的,本发明提供了一种以页岩为主料的新型瓷砖,通过添加一定组分的稀土和石墨烯,以提高瓷砖的散热性能以及烧结性能。
其原料主要组分及其质量百分比为:
页岩55%~65%,高岭土10%~20%,煤矸石5%~10%,粉煤灰5%~10%,钾长石4.5%~6%,富含CeO2的混合稀土2%~5%,石墨烯粉末0.5%~2% 。
其工艺过程为:
(1)将页岩送入破碎机进行粉碎;煤矸石经过筛选除杂后,送入破碎机粉碎,通过水洗去除杂质和漂浮物;钾长石进行酸洗以去除其中的铁和云母等杂质。
(2)将破碎后的页岩、煤矸石、钾长石以及粉煤灰按比例配料,共混进入球磨机水磨10~12h,细度控制在万孔筛余1%~2%范围以内。
(3)将经过球磨机水磨后的浆料电磁除铁,过100目振动筛,陈腐8~10h。
(4)去除浆料表面的清水部分,经榨滤机进一步除水后得到含水率不超过20%的湿料粉。
(5)将湿料粉与按比例配料的高岭土以及富含CeO2的混合稀土与湿料粉混合加入球磨机,水磨3~4h,细度控制在万孔筛余1%~1.5%范围以内。
(6)将石墨烯粉末以1:100的质量比在乙醇中分散开,超声震荡得到黑色石墨烯溶液。
(7)将经过球磨机水磨后的浆料再次进行电磁除铁,过100目振动筛。混磨浆料与石墨烯溶液一起加入浆料池充分搅拌备用。
(8)浆料经喷雾干燥后压制成型,坯砖经干燥后进行表面施釉,经过窑炉烧制成瓷砖,抛光后即为成品。
最终得到所述成品瓷砖导热系数为3~4.5 W/(m·K),抗压强度不低于35MPa。
本发明与现有技术相比的优点是:添加少量石墨烯粉末显著提高瓷砖的导热系数、增加其强度;添加微量富含CeO2的混合稀土可以降低烧结温度,细化晶粒,提高抗压强度。按此技术方案制得的瓷砖拥有优异散热性能,节能环保,符合市场需求,附加值高。
具体实施方式
实施例1
一种添加稀土和石墨烯的页岩散热瓷砖,其原料组成质量百分比为:
页岩65%,高岭土10%,煤矸石5%,粉煤灰10%,钾长石4.5%,富含CeO2的混合稀土5%,石墨烯粉末0.5%。
制备工艺流程为:
将页岩送入颚式破碎机进行粉碎;煤矸石经过筛选除杂后,送入破碎机粉碎,通过水洗去除其中的杂质和漂浮物;钾长石进行酸洗,去除其中的铁和云母等杂质。
将破碎后的页岩、煤矸石、钾长石以及粉煤灰按比例配料,进入球磨机水磨12h,细度控制在万孔筛余1%~2%范围以内。
将经过球磨机水磨后的浆料电磁除铁,过100目振动筛,陈腐10h。
排除浆料表面的清水部分,经榨滤机进一步除水,成为含水率不超过20%的湿料粉。
将湿料粉与按比例配料的高岭土以及富含CeO2的混合稀土与湿料粉混合加入球磨机,水磨3.5h,细度控制在万孔筛余1%~1.5%范围以内。
将石墨烯粉末以1:100的质量比在无水乙醇中分散开,超声震荡1小时得到黑色石墨烯溶液。
将经过球磨机水磨后的浆料再次进行电磁除铁,过100目振动筛。混磨浆料与石墨烯溶液一起加入浆料池充分搅拌备用。
浆料经喷雾干燥后进入7800吨压机压制成型,坯砖经干燥后进行表面施釉,然后经过窑炉烧制成瓷砖,抛光后即为成品。
得到所述成品瓷砖导热系数为3 W/(m·K),抗压强度为35MPa。
一种添加稀土和石墨烯的页岩散热瓷砖,其原料组成质量百分比为:
页岩60%,高岭土15%,煤矸石10%,粉煤灰5%,钾长石5.5%,富含CeO2的混合稀土3.5%,石墨烯粉末1%。
其工艺过程为:
将页岩送入颚式破碎机进行粉碎;煤矸石经过筛选除杂后,送入破碎机粉碎,再用水洗,去除其中的杂质和漂浮物;钾长石进行酸洗,去除其中的铁和云母等杂质。
将破碎后的页岩、煤矸石、钾长石以及粉煤灰按比例配料,进入球磨机水磨10h,细度控制在万孔筛余1%~2%范围以内。
将经过球磨机水磨后的浆料电磁除铁,过100目振动筛,陈腐8h。
排除浆料表面的清水部分,经榨滤机进一步除水,成为含水率不超过20%的湿料粉。
将湿料粉与按比例配料的高岭土以及富含CeO2的混合稀土与湿料粉混合加入球磨机,水磨3h,细度控制在万孔筛余1%~1.5%范围以内。
将石墨烯粉末以1:100的质量比在无水乙醇中分散开,超声震荡1小时得到黑色石墨烯溶液。
将经过球磨机水磨后的浆料再次进行电磁除铁,过100目振动筛。混磨浆料与石墨烯溶液一起加入浆料池充分搅拌备用。
浆料经喷雾干燥后进入7800吨压机压制成型,坯砖经干燥后进行表面施釉,然后经过窑炉烧制成瓷砖,抛光后即为成品。
得到所述成品瓷砖导热系数为3.5 W/(m·K),抗压强度为38MPa。
实施例3
一种添加稀土和石墨烯页岩散热瓷砖,其原料组成质量百分比为:
页岩55%,高岭土20%,煤矸石7.5%,粉煤灰7.5%,钾长石6%,富含CeO2的混合稀土2%,石墨烯粉末2%。
其工艺过程为:
将页岩送入颚式破碎机进行粉碎;煤矸石经过筛选除杂后,送入破碎机粉碎,再用水洗,去除其中的杂质和漂浮物;钾长石进行酸洗,去除其中的铁和云母等杂质。
将破碎后的页岩、煤矸石、钾长石以及粉煤灰按比例配料,进入球磨机水磨11h,细度控制在万孔筛余1%~2%范围以内。
将经过球磨机水磨后的浆料电磁除铁,过100目振动筛,陈腐9h。
排除浆料表面的清水部分,经榨滤机进一步除水,成为含水率不超过20%的湿料粉。
将湿料粉与按比例配料的高岭土以及富含CeO2的混合稀土与湿料粉混合加入球磨机,水磨4h,细度控制在万孔筛余1%~1.5%范围以内。
将石墨烯粉末以1:100的质量比在无水乙醇中分散开,超声震荡1小时得到黑色石墨烯溶液。
将经过球磨机水磨后的浆料再次进行电磁除铁,过100目振动筛。混磨浆料与石墨烯溶液一起加入浆料池充分搅拌备用。
浆料经喷雾干燥后进入7800吨压机压制成型,坯砖经干燥后进行表面施釉,然后经过窑炉烧制成瓷砖,抛光后即为成品。
得到所述成品瓷砖导热系数为4.5 W/(m·K),抗压强度为40MPa。
Claims (3)
1.一种添加稀土和石墨烯的页岩散热瓷砖,其特征在于,其原料主要组分及其质量百分比为:页岩55%~65% ,高岭土10%~20%,煤矸石5%~10%,粉煤灰5%~10%,钾长石4.5%~6%,富含CeO2的混合稀土2%~5%,石墨烯粉末0.5%~2%。
2.根据权利要求1所述的一种添加稀土和石墨烯的页岩散热瓷砖,其特征在于,制备工艺包含以下步骤:
将页岩送入破碎机进行粉碎;煤矸石经过筛选除杂后,送入破碎机粉碎,水洗去除杂质和漂浮物;钾长石进行酸洗,去除其中的铁和云母等杂质;
将破碎后的页岩、煤矸石、钾长石以及粉煤灰按比例配料,进入球磨机水磨10~12h,细度控制在万孔筛余1%~2%范围以内;
将经过球磨机水磨后的浆料电磁除铁,过100目振动筛,陈腐8~10h;
排除浆料表面的清水部分,经榨滤机进一步除水,成为含水率不超过20%的湿料粉;
将湿料粉、按比例配料的高岭土、富含CeO2的混合稀土共混加入球磨机,水磨3~4h,细度控制在万孔筛余1%~1.5%范围以内;
将石墨烯粉体以1:100的质量比在乙醇中分散开,超声震荡得到黑色石墨烯溶液;
将经过球磨机水磨后的浆料再次进行电磁除铁,过100目振动筛;
混磨浆料与石墨烯溶液一起加入浆料池充分搅拌备用;
浆料干燥后压制成型,坯砖经干燥后进行表面施釉,然后经过窑炉烧制成瓷砖,抛光后即为成品。
3.根据权利要求2所述的一种添加稀土和石墨烯的页岩散热瓷砖的制备方法,其特征在于,得到所述成品瓷砖导热系数为3~4.5 W/(m·K),抗压强度不低于35MPa。
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