CN110066165A - 一种石墨烯高性能滑板砖及其制作工艺 - Google Patents
一种石墨烯高性能滑板砖及其制作工艺 Download PDFInfo
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Abstract
本发明提供了一种石墨烯高性能滑板砖及其制作工艺,它按板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%进行混料,再放入压力机中高压成型,自然干燥24小时,再放入干燥窑内烘烤干燥24小时,自然冷却至60~80℃,再放入高温窑进行烧成,出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。本发明采用板状刚玉作为设备的骨料并添加有石墨烯,制成的滑板砖有热震稳定性和耐磨性,强度高、性能好、更耐高温。
Description
技术领域
本发明涉及滑板砖改进技术领域,具体为一种添加有石墨烯的高性能滑板砖及其制作工艺。
背景技术
滑板砖是连铸用功能耐火材料,广泛用于电炉、转炉、炉外精炼等钢包和连铸中间包滑动水口系统中。它作为控制钢水流量和流速的开关,安装在钢包和中间包底部,须长时间承受1600℃左右高温钢液的化学侵蚀,以及几十吨乃至上百吨钢液的压力。因此,要求滑板砖具有较高的耐高温强度,优良的耐侵蚀性、抗冲刷性和抗热震性。现有技术生产出的滑板砖大多是普通铝碳、铝锆碳质滑板砖,以板状刚玉、电熔刚玉、锆刚玉、锆莫来石为主要原料,添加金属微、细粉提高滑板的高温性能,以残碳高,固含量高的酚醛树脂和硅质改性树脂等为结合剂,采取不烧、轻烧、烧成的多种不同工艺制成。还有镁碳、铝镁晶石碳质滑板砖,采用烧结刚玉、高纯镁砂、镁铝尖晶石等原料,添加金属微、细粉提高滑板的高温性能,采用新型树脂结合,经高压成型,低温干燥制成。这种滑板砖性能低、强度低、使用次数较少、热稳定性低。当滑板温度达到一定高度时,容易被钢水冲刷,增加滑板砖之间的相互摩擦,造成不必要的摩擦损耗。
发明内容
本发明要解决的技术问题是克服现有的缺陷,提供一种成品质量高、性能好、使用寿命长的滑板砖及其制作工艺。
为了解决上述技术问题,本发明提供了如下的技术方案:
一种石墨烯高性能滑板砖,其包含的成分及重量百分比为:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%。
优选地,板状刚玉的粒径≤0.5mm。
优选地,碳黑为N220、N550和N660中的一种或多种。
优选地,石墨烯为黑色粉末状,其粒度<10μm。
优选地,铝粉牌号为FLG1、FLG2、FLG3中的一种或多种。
优选地,一种石墨烯高性能滑板砖的制作工艺,包括以下步骤:
(1)按重量比例称取各原料:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%,混合均匀后,置于压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至60~80℃,再放入高温窑进行烧成,烧成温度为1100~1250℃,时间为5~7天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
本发明的有益效果是:(1)采用板状刚玉作为设备骨料,具有高纯、低碱、高致密度、高强度、高导热性、高抗震性、耐腐蚀性和高绝缘性,是高级耐火材料,其耐火度≥1800℃,熔点高达2050℃,制成的滑板砖有热震稳定性和耐磨性,能够保证产品的使用寿命、保障生产的持续性,也可以降低生产成本;(2)石墨烯的材料强度是普通钢材的100倍,添加石墨烯后,能够提升产品的强度,在生产的产品有预设强度时,能够更快达成要求、缩短生产周期;(3)石墨烯结构稳定,更耐高温,添加石墨烯后,能够保护滑板和钢水的接触面和孔口不受高温钢水侵蚀。
具体实施方式
以下对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
板状刚玉是一种以高纯氧化铝为原料,纯净的、不添加任何外加剂而烧成收缩彻底的烧结刚玉。其耐火度≥1800℃,熔点高达2050℃。同时,由于其具有结晶粗大、发育良好的a-Al2O3晶体结构,大大改善了整体结构的抗蠕变性能;而板片状晶体结构,开口气孔小、显气孔率低、吸水率低、内部封闭气孔较多,提升了抗热震和抗剥落性能。也就是说,板状刚玉具有很高的耐火度、优异的抗热震性、抗蠕变性和抗剥落性。它原料来源稳定、生产过程节能环保、产品性价比高,做制品时还有耐磨性。而石墨烯材料有很好的强度,其强度是普通钢材的100倍,所以添加石墨烯生产的产品也有很好的强度,在产品强度需要达到一定值的情况下,使用石墨烯材料能够缩短生产周期,因为更容易达到其强度要求。同时,石墨烯的结构非常稳定,即使在高温环境下,周围碳原子发生挤撞,石墨烯内部电子受到的干扰也非常小,从而保持石墨烯原有的性质。
本发明涉及的一种石墨烯高性能滑板砖,基于上述情况进行研究设计,其包含的成分及重量百分比为:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%。
其中,板状刚玉的粒径≤0.5mm;碳黑为N220、N550和N660中的一种或多种;石墨烯为黑色粉末状,其粒度<10μm;铝粉牌号为FLG1、FLG2、FLG3中的一种或多种。
该技术的实现步骤如下:
(1)按重量比例称取各原料:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%,通过混料机将原材料混合均匀,再放入压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至80℃,再放入高温窑进行烧成,烧成温度为1100~1250℃,时间为5~7天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
实施例1
一种石墨烯高性能滑板砖,其包含的成分及重量百分比为:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%。
(1)按重量比例称取各原料:板状刚玉40%、矾土40%、石墨烯5%、铝粉10%和碳黑5%,通过混料机将原材料混合均匀,再放入压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至60℃,再放入高温窑进行烧成,烧成温度为1100℃,时间为7天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
实施例2
(1)按重量比例称取各原料:板状刚玉50%、矾土35%、石墨烯5%、铝粉5%和碳黑5%,通过混料机将原材料混合均匀,再放入压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至70℃,再放入高温窑进行烧成,烧成温度为1250℃,时间为5天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
实施例3
(1)按重量比例称取各原料:板状刚玉35%、矾土35%、石墨烯5%、铝粉15%和碳黑10%,通过混料机将原材料混合均匀,再放入压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至80℃,再放入高温窑进行烧成,烧成温度为1200℃,时间为6天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
本发明生产的滑板砖,性能高,能够提升单块滑板的使用次数,减少更换次数,从而降低使用者的劳动强度,同时,由于滑板的使用次数得到提升,降低了原材料的消耗,也降低了生产的成本;强度高,滑板不容易破损,更耐钢水冲刷,使用寿命更长;更耐高温,保护滑板不受高温钢水侵蚀。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种石墨烯高性能滑板砖,其特征在于,包含的成分及重量百分比为:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%。
2.根据权利要求1所述的一种石墨烯高性能滑板砖,其特征在于:所述碳黑为N220、N550和N660中的一种或多种。
3.根据权利要求1所述的一种石墨烯高性能滑板砖,其特征在于:所述石墨烯呈黑色粉末状,其粒度<10μm。
4.根据权利要求1所述的一种石墨烯高性能滑板砖,其特征在于:所述铝粉牌号为FLG1、FLG2、FLG3中的一种或多种。
5.根据权利要求1所述的一种石墨烯高性能滑板砖的制作工艺,其特征在于,包括以下步骤:
(1)按重量比例称取各原料:板状刚玉30~50%、矾土30~50%、碳黑2~5%、石墨烯5%和铝粉8~15%,混合均匀后,置于压力机中高压成型;
(2)将高压成型的原胚自然干燥24小时,再放入干燥窑内烘烤干燥,干燥温度为500℃,时间为24小时;
(3)取出干燥后的原胚,自然冷却至60~80℃,再放入高温窑进行烧成,烧成温度为1100~1250℃,时间为5~7天;
(4)出窑后,将原胚冷却至室温,到精密机床进行加工、组装,最后包装完成。
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CN102295464A (zh) * | 2011-06-13 | 2011-12-28 | 武汉科技大学 | 一种碳复合耐火材料及其制备方法 |
CN107473756A (zh) * | 2017-08-14 | 2017-12-15 | 唐山贝斯特高温材料有限公司 | 一种多用途含低维碳的陶瓷/炭复合材料及其生产方法 |
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