CN112552019A - 一种用于高温烧成骨质日用瓷的泥釉料配方 - Google Patents
一种用于高温烧成骨质日用瓷的泥釉料配方 Download PDFInfo
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- 238000010304 firing Methods 0.000 title claims abstract description 60
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Abstract
本发明涉及一种用于高温烧成骨质日用瓷的泥釉料配方,属于陶瓷制品技术领域。其泥料和釉料配方成分的重量份数为,泥料:滑石70‑80份、骨炭粉3‑4份、长石3‑6份、膨润土4‑7份、大同土9‑13份、腐殖酸钠0.2‑0.5份;釉料:钾长石55‑62份、石英9‑12份、龙岩土9‑11份、锂云母3‑4份、氧化锌3‑5份、废瓷粉9‑10份、骨炭粉2‑3份经过泥料和釉料制备、成型、干燥、施釉、高温烧成获得制品,其烧成时间为8‑12h,最高烧成温度为1280‑1320℃。本发明烧成的新型骨质日用瓷透明度、强度和白度好,光洁、观赏价值高,因此具有广阔的应用前景。
Description
技术领域
本发明涉及一种用于高温烧成骨质日用瓷的泥釉料配方,属于陶瓷制品技术领域。
背景技术
骨质瓷瓷质细腻,釉面光洁、光泽柔和,如脂似玉,极显雍容华贵。随着人们生活水平的不断提高,对生活用品的品味和档次提出了更高要求,特别是体现在日用陶瓷用品方面。骨质瓷是当今世界上公认的最高档瓷种,深受广大消费者的喜爱,市场前景非常广阔。
高白瓷亦称高级白度瓷,与建白瓷、艺术瓷雕合称德化瓷中的三朵金花。高白瓷系采选本地优质高岭土等原材料,经精加工配制,以高温还原烧成,瓷质釉色纯净细腻。但传统的高白瓷泥配方,泥浆流动性差、泥浆塑形差、成瓷热稳定性差、吸水率高、成瓷白度和透光度不理想,导致成品率低、价格昂贵。
高温烧制骨瓷(最高烧成温度为1300℃)具有强度高、白度和透明度好、釉面光洁细腻和美观的优点。然而现有骨质瓷产品质量较难控制,主要问题是强度低、抗热震性差、铅镉溶出量高。而随着人们生活水平日益提高,消费者对日用瓷器的要求也越来越高,人们不仅对日用瓷外观白度、透明度等有着高的要求,并且对内在性能铅镉溶出量、抗热震性有着更高的要求。因此研究发明一种外观更佳且强度高、铅镉溶出量低、抗热震性好的新型骨质日用瓷就具有非常大的现实意义。
发明内容
本发明要解决的技术问题是针对现有骨质日用瓷的技术不足,提供一种新型骨质日用瓷。与普通高白瓷相比,本发明新型骨质日用瓷铅镉溶出量低、抗热震性好,白度高、高透明、光洁、美观、耐用且观赏价值高。
本发明的第一个方面在于提供一种用于高温烧成骨质日用瓷的泥釉料配方,按照重量份计:
泥料包括:滑石70-80份、骨炭粉3-4份、长石3-6份、膨润土4-7份、大同土9-13份和腐殖酸钠0.2-0.5份;
釉料包括:钾长石55-62份、石英9-12份、龙岩土9-11份、锂云母3-4份、氧化锌3-5份、废瓷粉9-10份和骨炭粉2-3份。
在高温烧成骨质日用瓷的烧制过程中,泥料和其上的釉面均会发生一定的膨胀和收缩,因此,对于本发明而言,高温烧成骨质日用瓷的泥料和釉料需同时满足上述要求,泥釉料的膨胀系数必须相适应,,以保障瓷器在烧制过程中不会出现变形、鼓泡、开裂等情况。
进一步地,所述泥料包括:滑石74份、骨炭粉4份、长石5份、膨润土6份、大同土11份和腐殖酸钠0.3份。
进一步地,所述长石为钠长石或钾长石。
进一步地,所述釉料包括:钾长石58份、石英9份、龙岩土11份、锂云母3份、氧化锌5份、废瓷粉10份和骨炭粉3份。
进一步地,所述泥料的制备工序为:按泥料配方量称取各原料加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐即得。
进一步地,所述釉料的制备工序为:按釉料配方量称取各原料加入水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁即得。
进一步地,所述泥料是釉料的10倍重量。
本发明的另一个目的,在于提供一种高温烧制骨质日用瓷的烧成方法,包括以下步骤:
1)原料准备:分别制备高温烧制骨质日用瓷的泥料和釉料;
2)机压成型:采用所述泥料完成坯体制作,所述坯体进行干燥后施釉得釉坯;
3)一段氧化除杂:待釉坯干燥后置入炉窑进行氧化除杂烧制,所述氧化除杂烧制方法为,将炉窑内温度用时3-4h由室温升至975-985℃并保温20-40min;
4)二段弱还原:将炉窑温度用时2-2.5h由975-985℃升至1200-1240℃对氧化除杂烧制后的釉坯进行弱还原烧制;
5)三段高温烧成:将炉窑温度用时2.5-3.5h由1200-1240℃升至1280-1320℃对弱还原烧制后的釉坯进行高温烧成并保温20-40min。
进一步地,所述氧化除杂烧制方法为,将炉窑内温度用时3.5h由室温升至980℃并保温30min。
进一步地,所述弱还原烧制方法为,将炉窑温度用时2.5h由980℃升至1200℃对氧化除杂烧制后的釉坯进行弱还原烧制。
进一步地,所述高温烧成方法为,将炉窑温度用时2.5h由1200℃升至1300℃对弱还原烧制后的釉坯进行高温烧成,然后保温30min。
进一步地,所述炉窑为自动节能梭式窑。
本发明采用三段式烧成工艺对高温烧制骨质日用瓷进行烧制,具体地,所述氧化除杂烧制的目的在于去除釉坯中的碳、结晶水、氧化硫和有机物杂质等;还原烧制的目的在于将釉坯中的Fe进行高温还原,使瓷制品白度提高;高温烧成的目的在于,通过在高温下使瓷制品产生较高玻璃相,使瓷制品透明度高。
在本发明中,将强还原烧制改为弱还原烧制,在强还原烧制的过程中,烧制温度需要达到1260℃以上,烧制时间需要达到3.5h以上以使的釉坯中的Fe3+全部还原为Fe2+,所得成品的色泽白中泛青,在本发明中,通过在1200-1240℃下烧制2-2.5h将釉坯中的Fe3+部分还原为Fe2+过程中,使所得成品色泽白度自然柔和,节约能耗,排出去的烧成废气含硫的有害物质少,工艺更加环保,通过本发明配方和本烧成工艺的配合,所制备的瓷制品强度更高,透明度更高,色泽也更加柔和。
与现有技术相比,本发明具有的有益效果:
本发明烧制的骨质日用瓷经泥釉料配方研制和调试具有铅镉溶出量低、抗热震性好,强度白度高、高透明、光洁、美观、耐用且观赏价值高的优点,且本发明的新瓷种比原老瓷种(高白瓷)的成本增加10%左右,而销售价格增加25%左右,直接经济效益15%左右。
对成型工艺的泥釉料适应性进行升级,既要适应注浆工艺,又要适合全自动智能成型生产线操作,投入大生产后完全达到要求。
对烧成曲线作了调整,以全自动节能梭式窑烧成为课题,从原来的强还原焰烧成调成为弱还原焰烧成,从而节约天然气20%左右,生产出来的陶瓷产品更通透、光洁细腻,强度白度更高、色泽润滑具有玉质感。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将对本发明实施例中的技术方案进行清楚、完整地描述。实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
实施例1
一种高温烧制的骨质日用瓷,其泥料和釉料配方成分重量份数为:
泥料:滑石74份、骨炭粉4份、长石5份、膨润土6份、大同土11份、腐殖酸钠0.3份;
釉料:钾长石58份、石英9份、龙岩土11份、锂云母3份、氧化锌5份、废瓷粉10份、骨炭粉3份;
其制备方法包括以下步骤:
1)泥料制备:按泥料配方量称取各原料,加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐后备用。
2)釉料制备:按釉料配方量称取各原料,加入水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁后备用。
3)将步骤1)制备好的泥料投入石膏模成型后,待泥坯干燥后在泥坯表面施用步骤2)中制备得到的釉料,所用泥料是釉料的10倍重量,施釉后的坯体采用三段式高温烧成工艺,具体烧制步骤为:
一段氧化除杂:待釉坯干燥后置入炉窑进行氧化除杂烧制,所述氧化除杂烧制方法为,将炉窑内温度用时3.5h由室温升至980℃并保温30min以去除坯体中碳、结晶水、氧化硫和有机物杂质等;
二段弱还原:将炉窑温度用时2.5h由980℃升至1200℃对氧化除杂烧制后的釉坯进行弱还原烧制将坯体中Fe3+还原成Fe2+;
三段高温烧成:将炉窑温度用时2.5h由1200℃升至1300℃对弱还原烧制后的釉坯进行高温烧成并保温30min使坯体产生玻璃相;最后窑炉熄火自然冷却至室温。
实施例2
一种高温烧制的骨质日用瓷,其泥料和釉料配方成分重量份数为:
泥料:滑石74份、骨炭粉4份、长石5份、膨润土6份、大同土11份、腐殖酸钠0.3份;
釉料:钾长石58份、石英9份、龙岩土11份、锂云母3份、氧化锌5份、废瓷粉10份、骨炭粉3份;
其制备方法包括以下步骤:
1)泥料制备:按泥料配方量称取各原料,加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐后备用。
2)釉料制备:按釉料配方量称取各原料,加入水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁后备用。
3)将步骤1)制备好的泥料投入石膏模成型后,待泥坯干燥后在泥坯表面施用步骤2)中制备得到的釉料,所用泥料是釉料的10倍重量,施釉后的坯体采用三段式高温烧成工艺,具体烧制步骤为:
一段氧化除杂:待釉坯干燥后置入炉窑进行氧化除杂烧制,所述氧化除杂烧制方法为,将炉窑内温度用时3.5h由室温升至980℃并保温30min以去除坯体中碳、结晶水、氧化硫和有机物杂质等;
二段弱还原:将炉窑温度用时2.5h由980℃升至1240℃对氧化除杂烧制后的釉坯进行弱还原烧制将坯体中Fe3+还原成Fe2+;
三段高温烧成:将炉窑温度用时2.5h由1240℃升至1320℃对弱还原烧制后的釉坯进行高温烧成并保温30min使坯体产生玻璃相;最后窑炉熄火自然冷却至室温。
实施例3
一种高温烧制的骨质日用瓷,其泥料和釉料配方成分重量份数为:
泥料:滑石78份、骨炭粉3份、长石3份、膨润土5份、大同土9份、腐殖酸钠0.5份;
釉料:钾长石60份、石英11份、龙岩土9份、锂云母4份、氧化锌4份、废瓷粉9份、骨炭粉2份;
其制备方法包括以下步骤:
1)泥料制备:按泥料配方量称取各原料,加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐后备用。
2)釉料制备:按釉料配方量称取各原料,加入水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁后备用。
3)将步骤1)制备好的泥料投入石膏模成型后,待泥坯干燥后在泥坯表面施用步骤2)中制备得到的釉料,所用泥料是釉料的10倍重量,施釉后的坯体采用三段式高温烧成工艺,具体烧制步骤为:
一段氧化除杂:待釉坯干燥后置入炉窑进行氧化除杂烧制,所述氧化除杂烧制方法为,将炉窑内温度用时3.5h由室温升至980℃并保温30min以去除坯体中碳、结晶水、氧化硫和有机物杂质等;
二段弱还原:将炉窑温度用时2.5h由980℃升至1200℃对氧化除杂烧制后的釉坯进行弱还原烧制将坯体中Fe3+还原成Fe2+;
三段高温烧成:将炉窑温度用时2.5h由1200℃升至1300℃对弱还原烧制后的釉坯进行高温烧成并保温30min使坯体产生玻璃相;最后窑炉熄火自然冷却至室温。
对比例1
一种高温烧制的高白瓷,其泥料和釉料配方成分重量份数为:
泥料:高岭土80份、长石10份、废瓷粉7份、腐殖酸钠3份;
釉料:长石62份、石英20份、碳酸钙5份、氧化锌5份、高岭土8份;
其制备方法包括以下步骤:
1)泥料制备:按泥料配方量称取各原料,加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐后备用。
2)釉料制备:按釉料配方量称取各原料,加入水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁后备用。
3)将步骤1)制备好的泥料投入石膏模成型后,待泥坯干燥后在泥坯表面施用步骤2)中制备得到的釉料,所用泥料是釉料的10倍重量,施釉后的坯体采用三段式高温烧成工艺,具体烧制步骤为:
一段氧化除杂:待釉坯干燥后置入炉窑进行氧化除杂烧制,所述氧化除杂烧制方法为,将炉窑内温度用时4h由室温升至980℃并保温30min以去除坯体中碳、结晶水、氧化硫和有机物杂质等;
二段弱还原:将炉窑温度用时3.5h由980℃升至1260℃对氧化除杂烧制后的釉坯进行弱还原烧制将坯体中Fe3+还原成Fe2+;
三段高温烧成:将炉窑温度用时4.5h由1260℃升至1350℃对弱还原烧制后的釉坯进行高温烧成并保温30min使坯体产生玻璃相;最后窑炉熄火自然冷却至室温。
对实施例1-3及对比例1烧制的样品进行质量检测,其中,抗热震性的检测依据为GB/T 3298-2008规定的方法,每个实施例或对比例中使用6个样品经180到20℃热交换一次;
白度的检测依据为QB/T 1503-2011;
铅迁移量的检测依据为GB 31604.34-2016;
镉迁移量的检测依据为GB 31604.24-2016;
吸水率的检测依据为GB/T 3299-2011;
抗弯曲强度的检测依据为GB/T 4741-1999;
结果如表1所示:
表1
国标 | 实施例1 | 实施例2 | 实施例3 | 对比例1 | |
抗热震性 | - | 未裂开 | 未裂开 | 未裂开 | 未裂开 |
白度(%) | ≧55 | 87 | 83 | 86 | 74 |
铅迁移量(mg/L) | - | 未检出 | 未检出 | 未检出 | 未检出 |
镉迁移量(mg/L) | - | 未检出 | 未检出 | 未检出 | 未检出 |
吸水率(E/%) | ≦0.5 | 0.02 | 0.03 | 0.02 | 0.11 |
抗弯曲强度(MPa) | - | 132 | 126 | 130 | 111 |
成坯率(%) | - | 96.5 | 95.9 | 96.3 | 92.4 |
通过表1数据可以看出,本发明烧制的骨质日用瓷铅镉溶出率及吸水率极低,抗热震性及抗弯曲强度好,白度高,与烧制的原老瓷种(高白瓷)相比,内在性能与外观均有明显的提高,符合如今人们对日用瓷器高的要求。
以上所描述的实施例仅为本发明优选实施例,并不用于限制本发明。对于本领域的技术人员来说,本发明可以有各种变化和更改,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,按照重量份计:
泥料包括:滑石70-80份、骨炭粉3-4份、长石3-6份、膨润土4-7份、大同土9-13份和腐殖酸钠0.2-0.5份;
釉料包括:钾长石55-62份、石英9-12份、龙岩土9-11份、锂云母3-4份、氧化锌3-5份、废瓷粉9-10份和骨炭粉2-3份。
2.根据权利要求1所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述泥料包括滑石74份、骨炭粉4份、长石5份、膨润土6份、大同土11份和腐殖酸钠0.3份。
3.根据权利要求2所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述长石为钠长石或钾长石。
4.根据权利要求1所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述釉料包括:钾长石58份、石英9份、龙岩土11份、锂云母3份、氧化锌5份、废瓷粉10份和骨炭粉3份。
5.权利要求1-3任一项所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述泥料的制备工序为:按泥料配方量称取各原料,加入水至泥料含水率为40%-45%,装入球磨设备内球磨,出磨泥浆过筛除铁、脱水,再练泥和陈腐即得。
6.根据权利要求1-3任一项所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述釉料制备工序为:按釉料配方量称取各原料,加水至釉料含水率为45%-50%,装入球磨设备内球磨,出磨釉浆过筛除铁即得。
7.根据权利要求6、7所述一种用于高温烧成骨质日用瓷的泥釉料配方,其特征在于,所述泥料是釉料的10倍重量。
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