CN115196950A - 一种秘色瓷原料及烧制方法 - Google Patents
一种秘色瓷原料及烧制方法 Download PDFInfo
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- CN115196950A CN115196950A CN202210690985.XA CN202210690985A CN115196950A CN 115196950 A CN115196950 A CN 115196950A CN 202210690985 A CN202210690985 A CN 202210690985A CN 115196950 A CN115196950 A CN 115196950A
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 110
- 238000010304 firing Methods 0.000 title claims abstract description 104
- 239000002994 raw material Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 33
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 68
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 30
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 21
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000292 calcium oxide Substances 0.000 claims abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 15
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 15
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 15
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims description 22
- 235000015895 biscuits Nutrition 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 15
- 230000001590 oxidative effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 5
- 235000011613 Pinus brutia Nutrition 0.000 claims description 5
- 241000018646 Pinus brutia Species 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010137 moulding (plastic) Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 238000005245 sintering Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001354 calcination Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 5
- 230000010494 opalescence Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 235000009051 Ambrosia paniculata var. peruviana Nutrition 0.000 description 2
- 235000003097 Artemisia absinthium Nutrition 0.000 description 2
- 240000001851 Artemisia dracunculus Species 0.000 description 2
- 235000017731 Artemisia dracunculus ssp. dracunculus Nutrition 0.000 description 2
- 235000003261 Artemisia vulgaris Nutrition 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000001138 artemisia absinthium Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000003181 co-melting Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 238000004017 vitrification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RLLPVAHGXHCWKJ-UHFFFAOYSA-N permethrin Chemical compound CC1(C)C(C=C(Cl)Cl)C1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 RLLPVAHGXHCWKJ-UHFFFAOYSA-N 0.000 description 1
- 229960000490 permethrin Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
本发明提供了一种秘色瓷原料及烧制方法,涉及瓷器制造技术领域,所述秘色瓷原料在坯体和釉料中采用二氧化硅、三氧化二铝、氧化钾、三氧化二铁、氧化镁、氧化钠、氧化钛、氧化钙、二氧化锰以及五氧化二磷进行配比,有效降低了秘色瓷的煅烧温度,提高反应烧结活性,使秘色瓷烧成温度从1270‑1300℃降至1140‑1200℃,解决了秘色瓷烧结温度高、耗能大的技术难题,节能降耗效果显著,降低了秘色瓷的制造成本,且烧制效率高,成品率高,瓷质好,釉面丰润细腻,产品热稳定性好,强度高,大大提高了成品秘色瓷的美观度和质量。
Description
技术领域
本发明涉及瓷器制造技术领域,具体而言,涉及一种秘色瓷原料及烧制方法。
背景技术
秘色瓷,是越窑青瓷精品之一,秘色瓷烧造决定于瓷土、釉色和温度,烧制难度极高,瓷器的釉色如何,主要靠釉料配方和窑炉火候的把握,不同的火候、气氛,釉色可以相去很远。然而秘色瓷从配方、制坯、上釉到烧造整个工艺都是秘不外传的,因此现代工艺想稳定地烧出同样的釉色具有相当大的难度,研究其配方和工艺以还原秘色瓷的独特成色也成为领域内的热门研究方向。
现代秘色瓷烧制工艺中,烧成温度普遍较高,一般处于1270-1300℃之间,且多采用液化气来对产品进行烧成,从烧成到冷却需要24-48小时,烧成时间比较长,而且不能实现连续作业,造成单位产品的能耗较大,因此在当今世界能源极度短缺的情况下,降低越窑秘色瓷的烧结温度已成为业界迫切需要解决的问题。除此之外,现有工艺制成的秘色瓷还常出现与传统秘色瓷色彩偏差较大,成色浑浊,表面粗糙,质感较差等问题。
发明内容
本发明解决的问题是现有秘色瓷烧成温度高,时间长,耗能大,以及瓷器成色质感较差中的至少一个方面。
为解决上述问题,本发明提供一种秘色瓷原料,包括坯体原料和釉料原料,所述坯体原料按重量百分比包括如下组分:二氧化硅60%-70%,三氧化二铝20%-30%,氧化钾4%-8%,三氧化二铁1.8%-3.2%,氧化镁0.3%-0.5%,氧化钠0.15%-0.2%,氧化钛0.15%-0.3%,氧化钙0.07%-0.12%,二氧化锰0.03%-0.15%,五氧化二磷0.01%-0.5%;所述釉料原料按重量百分比包括如下组分:二氧化硅65%-78%,三氧化二铝7%-13%,氧化钙7%-12%,氧化钾3%-6%,五氧化二磷3%-5%,三氧化二铁1%-3%,氧化钠0.1%-0.5%,氧化镁0.1%-0.4%,氧化钛0.08%-0.25%,二氧化锰0.03%-0.08%。
可选地,所述坯体原料和所述釉料原料的平均颗粒尺寸不低于180目。
可选地,所述五氧化二磷的平均颗粒尺寸不低于250目。
可选地,所述三氧化二铝的平均颗粒尺寸不低于1000目。
与现有技术相比,本发明具有以下技术效果:
本发明所提供的秘色瓷原料组分中,氧化钠、氧化钙、二氧化硅、三氧化二铝、三氧化二铁和氧化镁作为秘色瓷原料的基础材料;五氧化二磷和氧化钾为重要的降温成分,坯体原料中0.01%-0.5%含量的五氧化二磷和4%-8%含量氧化钾,在低温时可以使坯体的烧结提前,釉料原料中3%-5%含量的五氧化二磷和3%-6%含量的氧化钾可以有效的在低温(1000℃以下)时初融釉料中的其他材料,如氧化钛和二氧化锰等,使釉料在低温时有良好的熔融表现,提高反应烧结活性。五氧化二磷的熔点为340℃,主要作用于温度从常温升至525-575℃烧制阶段,氧化钾的熔点770℃,主要作用于温度在950-1000℃以下的烧制阶段,1000℃之后是各其他高熔点元素与五氧化二磷和氧化钾之间共熔的过程,可以通过五氧化二磷和氧化钾的共同作用来实现玻化;氧化钛和二氧化锰是釉料的着色剂、消色剂和脱铁剂,可以使釉面呈现出黄色和红褐色,配合青色成为秘色瓷特有的艾草色,且二氧化锰的熔点为535℃,对烧制温度的降低也有一定帮助。
本发明所提供的秘色瓷原料有效降低了秘色瓷的煅烧温度,提高反应烧结活性,使秘色瓷烧成温度从1270-1300℃降至1140-1200℃,解决了秘色瓷烧结温度高、耗能大的技术难题,节能降耗效果显著,降低了秘色瓷的制造成本,且烧制效率高,成品率高,瓷质好,釉面丰润细腻,产品热稳定性好,强度高,大大提高了成品秘色瓷的美观度和质量。
本发明另一目的在于提供一种秘色瓷烧制方法,使用上述秘色瓷原料烧制,包括坯体制备、釉料制备、施釉、烧成工序,其中,所述坯体使用所述秘色瓷原料中的坯体原料制备得到,所述釉料使用所述秘色瓷原料中的釉料原料制备得到,所述烧成工序包括:
步骤S1:将施釉完毕的坯体置入窑炉中,烧制3-5小时,将窑温从常温升至525-575℃;
步骤S2:继续烧制2-3小时,将窑温升至950-1000℃后保温1-2小时;
步骤S3:使用还原焰烧制1-2小时,将窑温升至1120-1130℃;
步骤S4:加重还原焰,继续烧制1-2小时,将窑温升至1140-1150℃后保温1-2小时;
步骤S5:将火焰转为氧化焰,缓慢降温3-5小时,直至将窑温降至800-850℃,停火并自然冷却,烧成完毕。
可选地,所述坯体制备工序包括:采集蛏子泥,淘洗并球磨,出浆后晒干,得到坯体原料;向所述坯体原料中加水调和,可塑成型后晾干,得到素坯;对所述素坯进行素烧,得到坯体。
可选地,所述素烧的过程包括:将所述素坯置入窑炉中,使用所述氧化焰烧制3-5小时,将窑温从常温升至530-550℃,继续烧制2-3小时,将窑温升至1050-1100℃,保温20-40min后自然冷却至室温。
可选地,所述釉料制备工序包括:使用松木烧制草木灰,将所述草木灰与蛏子泥和矿物原料混合,加水调和,得到釉料。
可选地,所述釉料的浓度为48-52婆梅氏度。
可选地,所述施釉工序包括浸釉、喷釉、刷釉、涂釉、淋釉中的一种或几种,且施釉后所述釉料的厚度不超过1mm。
本发明所述的秘色瓷烧制方法先升温排出水分,再使用还原焰烧制使釉料中的部分氧化铁还原为氧化亚铁,最后在氧化焰环境下缓慢降温3-5个小时,使秘色瓷呈现偏淡黄的青色和艾色,通透率高,无乳浊现象,琉璃莹润之质感强,整体釉面均匀透亮,能较好还原传统越窑秘色瓷之美丽色彩,且所述秘色瓷的制备方法对于现有技术的其他优势与上述低温烧成秘色瓷的原料相同,在此不再赘述。
附图说明
图1为本发明实施例提供的秘色瓷烧制方法流程图。
具体实施方式
为使本发明的上述目的、特征和优点能够更为明显易懂,下面结合附图对本发明的具体实施例做详细的说明。
本发明实施例提供的秘色瓷原料包括坯体原料和釉料原料,所述坯体原料按重量百分比包括如下组分:二氧化硅60%-70%,三氧化二铝20%-30%,氧化钾4%-8%,三氧化二铁1.8%-3.2%,氧化镁0.3%-0.5%,氧化钠0.15%-0.2%,氧化钛0.15%-0.3%,氧化钙0.07%-0.12%,二氧化锰0.03%-0.15%,五氧化二磷0.01%-0.5%;所述釉料原料按重量百分比包括如下组分:二氧化硅65%-78%,三氧化二铝7%-13%,氧化钙7%-12%,氧化钾3%-6%,五氧化二磷3%-5%,三氧化二铁1%-3%,氧化钠0.1%-0.5%,氧化镁0.1%-0.4%,氧化钛0.08%-0.25%,二氧化锰0.03%-0.08%。
本实施例所提供的秘色瓷原料组分中,氧化钠、氧化钙、二氧化硅、三氧化二铝、三氧化二铁和氧化镁作为秘色瓷原料的基础材料;五氧化二磷和氧化钾为重要的降温成分,坯体原料中0.01%-0.5%含量的五氧化二磷和4%-8%含量氧化钾,在低温时可以使坯体的烧结提前,釉料原料中3%-5%含量的五氧化二磷和3%-6%含量的氧化钾可以有效的在低温(1000℃以下)时初融釉料中的其他材料,如氧化钛和二氧化锰等,使釉料在低温时有良好的熔融表现,提高反应烧结活性。五氧化二磷的熔点为340℃,主要作用于温度从常温升至525-575℃烧制阶段,氧化钾的熔点770℃,主要作用于温度在950-1000℃以下的烧制阶段,1000℃之后是各其他高熔点元素与五氧化二磷和氧化钾之间共熔的过程,可以通过五氧化二磷和氧化钾的共同作用来实现玻化;氧化钛和二氧化锰是釉料的着色剂、消色剂和脱铁剂,可以使釉面呈现出黄色和红褐色,配合青色成为秘色瓷特有的艾草色,且二氧化锰的熔点为535℃,对烧制温度的降低也有一定帮助。
本实施例所提供的秘色瓷原料有效降低了秘色瓷的煅烧温度,提高反应烧结活性,使秘色瓷烧成温度从1270-1300℃降至1140-1200℃,解决了秘色瓷烧结温度高、耗能大的技术难题,节能降耗效果显著,降低了秘色瓷的制造成本,且烧制效率高,成品率高,瓷质好,釉面丰润细腻,产品热稳定性好,强度高,大大提高了成品秘色瓷的美观度和质量。
在一些具体的实施例中,坯体原料和釉料原料的平均颗粒尺寸不低于180目,目数在中国规格以每厘米长度内的木孔数表示,目数越大,说明物料粒度越细,目数越小,说明物料粒度越大,本实施例将坯体原料和釉料原料的平均颗粒控制在不低于180目的尺寸,以此使坯体原料和釉料原料的颗粒保持在较细的状态,获得品质较佳的坯体和釉料浆,有利于后续烧制过程中,坯体和釉料结合紧密,得到釉面丰润细腻,瓷质好,热稳定性好,强度高的成品秘色瓷。
在一些具体的实施例中,五氧化二磷的平均颗粒尺寸不低于250目,以此使釉料原料的颗粒保持在较细的状态,获得品质较佳的釉料浆,有利于后续烧制过程中,坯体和釉料结合紧密,得到釉面丰润细腻,瓷质好的成品秘色瓷,同时将五氧化二磷的颗粒尺寸保持在不低于250目的大小,能够更好地降低秘色瓷的煅烧温度,提高反应烧结活性,节约能源。
在一些具体的实施例中,三氧化二铝的平均颗粒尺寸不低于1000目,以此使坯体原料和釉料原料中的三氧化二铝的颗粒保持在较细的状态,获得品质较佳的坯体和釉料浆,有利于后续烧制过程中,坯体和釉料结合紧密,得到美观度和质量俱佳的成品秘色瓷。
本发明另一实施例提供一种秘色瓷烧制方法,使用上述秘色瓷原料烧制,包括坯体制备、釉料制备、施釉、烧成工序,其中,所述坯体使用所述秘色瓷原料中的坯体原料制备得到,所述釉料使用所述秘色瓷原料中的釉料原料制备得到,结合图1所示,所述烧成工序包括:
步骤S1:将施釉完毕的坯体置入窑炉中,烧制3-5小时,将窑温从常温升至525-575℃,用以排除施釉后素胎坯体中物理水分;
步骤S2:继续烧制2-3小时,将窑温升至950-1000℃后保温1-2小时,用以排除坯体中分子水分;
步骤S3:使用还原焰烧制1-2小时,将窑温升至1120-1130℃,以使釉料中的部分氧化铁还原为氧化亚铁。具体地,通过减少助燃空气量,使火焰中有不完全燃烧的还原性气体产物CO和H2等,在高温下秘色瓷坯体中的高价的红色三氧化二铁被还原为低价青色氧化亚铁,秘色瓷瓷身也因此而呈现出青色;
步骤S4:加重还原焰,继续烧制1-2小时,将窑温升至1140-1150℃后保温1-2小时,其中,加重还原焰是指加大风门的大小,使火焰燃烧更加充分,火焰燃烧充分消耗瓷器内部的氧气,促进还原反应,进一步加强秘色瓷表面的青色;
步骤S5:将火焰转为氧化焰,缓慢降温3-5小时,直至将窑温降至800-850℃,停火并自然冷却,烧成完毕,增加助燃空气量使燃料煤气完全燃烧,使用氧化焰烧制秘色瓷,并使窑温在3-5小时的时间段内缓慢降低至800-850℃后停火,可以使秘色瓷呈现莹润透亮的艾青色,青中略带黄,更加接近传统秘色瓷艾色釉的美丽成色,能较好地还原秘色瓷的独特釉色,若不使用氧化焰或降温过程时间不够长,则烧制得到的秘色瓷器易泛青灰色,与传统秘色瓷成色相差较大,美观度和质量较差。
本实施例所述的秘色瓷烧制方法先升温排出水分,再使用还原焰烧制使釉料中的部分氧化铁还原为氧化亚铁,最后在氧化焰环境下缓慢降温3-5个小时,使秘色瓷呈现偏淡黄的青色和艾色,通透率高,无乳浊现象,琉璃莹润之质感强,整体釉面均匀透亮,能较好还原传统越窑秘色瓷之美丽色彩。
在一些具体的实施例中,坯体制备工序包括:采集蛏子泥,淘洗并球磨,出浆后晒干,得到坯体原料;向坯体原料中加水调和,可塑成型后晾干,得到素坯;对素坯进行素烧,得到坯体。
蛏子泥是宁波地区对田里或山岙里表层土向下2-4米采出的青灰色泥土的专用词,浙江西南地区将这种泥称为青丝泥,中原北方地区称为大青土、二青土,蛏子泥粘性好,适宜作为秘色瓷坯料的原料,可以得到质量品质较佳的坯料。
在一些具体的实施例中,素烧的过程包括:将素坯置入窑炉中,使用氧化焰烧制3-5小时,将窑温从常温升至530-550℃,继续烧制2-3小时,将窑温升至1050-1100℃,保温20-40min后自然冷却至室温,用以获得质量较佳的素胎,便于后续的施釉处理和入窑烧制,得到质量优良的成品秘色瓷。
在一些具体的实施例中,釉料制备工序包括:使用松木烧制草木灰,将所述草木灰与蛏子泥和矿物原料混合,加水调和,得到釉料。
使用蛏子泥作为秘色瓷艾色釉料的原料之一,可以增强与胎体的黏着性,达到较佳的烧制效果,矿物原料中富含的碳酸钙能够增加釉的悬浮能力,使秘色瓷艾色釉料能够较佳的附着在坯料的表面,使用松木烧制得到的草木灰富含五氧化二磷和氧化钾,能够与坯料中的各个元素协同作用,进一步降低秘色瓷的煅烧温度,提高反应烧结活性。
在一些具体的实施例中,釉料的浓度为48-52婆梅氏度,婆梅氏度通过婆梅氏比重计(也称波美比重计)测得,是表示溶液浓度的一种方法,将釉料浓度控制在48-52婆梅氏度的范围内,用以使釉料浆处于最佳的流动状态,便于后续的施釉,获得品质较佳的秘色瓷。
在一些具体的实施例中,施釉工序包括浸釉、喷釉、刷釉、涂釉、淋釉中一种或几种,且施釉后所述釉料的厚度不超过1mm。用以使釉料充分粘结在坯料上,实现釉料与坯料间的最佳结合状态,使釉面薄厚均匀,瓷身胎质细腻致密,瓷化程度高。
下面结合具体实施例,对本发明技术方案做进一步阐述,明确本发明的目的及优点。
实施例1
步骤T1:采集蛏子泥,淘洗后球磨10小时,出浆晒干,得到坯体原料;
其中,坯体原料按重量百分比包括如下组分:二氧化硅60%,三氧化二铝20%,氧化钾4%,三氧化二铁1.8%,氧化镁0.3%,氧化钠0.15%,氧化钛0.15%,氧化钙0.07%,二氧化锰0.03%,五氧化二磷0.01%,且坯体原料的平均颗粒尺寸为180目,五氧化二磷的平均颗粒尺寸为250目,三氧化二铁的平均颗粒尺寸为1000目。
步骤T2:向步骤T1得到的坯体原料中加水调和,塑型并晾干,得到素坯,将所述素坯置入窑炉中,常温下使用氧化焰烧制3小时,将窑温升至530℃,继续烧制2小时,将窑温升至1050℃,保温20min后冷却至室温,得到坯体;
步骤T3:分别采集蛏子泥和石灰石,淘洗后球磨,出浆晒干备用,使用松木烧制草木灰,与蛏子泥和石灰石混合得到釉料原料,用水将所述釉料原料调至浓度为48婆梅氏度,得到釉料;
其中,釉料原料按重量百分比包括如下组分:二氧化硅65%,三氧化二铝7%,氧化钙7%,氧化钾3%,五氧化二磷3%,三氧化二铁1%,氧化钠0.1%,氧化镁0.1%,氧化钛0.08%,二氧化锰0.03%,且釉料原料的平均颗粒尺寸为180目,五氧化二磷的平均颗粒尺寸为250目,三氧化二铁的平均颗粒尺寸为1000目。
步骤T4:使用步骤T3得到的釉料对步骤T2得到的坯体进行浸釉处理,浸釉处理后釉厚为0.7mm,晾干后进行吹釉处理,吹釉处理后釉厚为1mm,自然晾干;
步骤T5:将步骤T4中已施釉的坯体置入窑炉中,烧制3小时,将窑温从常温升至525℃;继续烧制2小时,将窑温升至950℃后保温1小时;使用还原焰烧制1小时,将窑温升至1120℃;加重还原焰,继续烧制1小时,将窑温升至1140℃后保温1小时;使用氧化焰烧制3小时,将窑温降至800℃后停火,自然冷却。
本实施例最高烧制温度为1140℃,有效降低了秘色瓷的煅烧温度,提高了反应烧结活性,具有显著的节能降耗效果,有效降低了秘色瓷的制造成本,且烧制得到的秘色瓷热稳定性较好,表面饱满均匀,通透率较好,瓷质好,釉面丰润细腻,呈现略带有乳浊感的青绿色。
实施例2
本实施例与实施例1的区别在于:
步骤T1中坯体原料各组分质量百分比为:二氧化硅70%,三氧化二铝30%,氧化钾8%,三氧化二铁3.2%,氧化镁0.5%,氧化钠0.2%,氧化钛0.3%,氧化钙0.12%,二氧化锰0.15%,五氧化二磷0.5%;
步骤T2素烧过程为,常温下使用氧化焰烧制5小时,将窑温升至550℃,继续烧制3小时,将窑温升至1100℃,保温40min后自然冷却至室温;
步骤T3中釉料原料各组分质量百分比为:二氧化硅78%,三氧化二铝13%,氧化钙12%,氧化钾6%,五氧化二磷5%,三氧化二铁3%,氧化钠0.5%,氧化镁0.4%,氧化钛0.25%,二氧化锰0.08%;釉料的浓度为52婆梅氏度;
步骤T5中入窑烧制过程为:素胎置入窑炉中,烧制5小时,将窑温从常温升至575℃;继续烧制3小时,将窑温升至1000℃后保温2小时;使用还原焰烧制2小时,将窑温升至1130℃;加重还原焰,继续烧制2小时,将窑温升至1200℃后保温2小时;使用氧化焰烧制5小时,将窑温降至850℃后停火。
本实施例最高烧制温度为1200℃,有效降低了秘色瓷的煅烧温度,提高了反应烧结活性,具有显著的节能降耗效果,有效降低了秘色瓷的制造成本,且烧制得到的秘色瓷釉面均匀莹润,乳浊现象低,琉璃质感明显,通透感强,整体呈现艾青色,青中略带黄,能较好还原上乘秘色瓷精品之釉色。
实施例3
本实施例与实施例1的区别在于:
步骤T1中坯体原料各组分质量百分比为:二氧化硅65%,三氧化二铝25%,氧化钾6%,三氧化二铁2.5%,氧化镁0.4%,氧化钠0.17%,氧化钛0.22%,氧化钙0.1%,二氧化锰0.09%,五氧化二磷0.25%;
步骤T2素烧过程为,常温下使用氧化焰烧制4小时,将窑温升至540℃,继续烧制2.5小时,将窑温升至1075℃,保温30min后自然冷却至室温;
步骤T3中釉料原料各组分质量百分比为:二氧化硅72%,三氧化二铝10%,氧化钙10%,氧化钾5%,五氧化二磷4%,三氧化二铁2%,氧化钠0.3%,氧化镁0.2%,氧化钛0.16%,二氧化锰0.05%;釉料的浓度为50婆梅氏度;
步骤T5中入窑烧制过程为:素胎置入窑炉中,烧制4小时,将窑温从常温升至550℃;继续烧制2.5小时,将窑温升至1100℃后保温1.5小时;使用还原焰烧制1.5小时,将窑温升至1125℃;加重还原焰,继续烧制1.5小时,将窑温升至1180℃后保温1.5小时;使用氧化焰烧制4小时,将窑温降至825℃后停火。
本实施例最高烧制温度为1180℃,有效降低了秘色瓷的煅烧温度,提高了反应烧结活性,具有显著的节能降耗效果,有效降低了秘色瓷的制造成本,且烧制得到的秘色瓷表面柔和,通透率高,无乳浊现象,瓷身胎质细腻致密,瓷化程度高,吸水率不超过0.2%,叩击瓷身其声音清脆盈亮,热稳定性好,琉璃莹润之质感强,整体釉面均匀透亮,呈现偏淡黄的青色、艾色,能较好还原越窑秘色精品之色彩。
虽然本公开披露如上,但本公开的保护范围并非仅限于此。本领域技术人员在不脱离本公开的精神和范围的前提下,可进行各种变更与修改,这些变更与修改均将落入本发明的保护范围。
Claims (10)
1.一种秘色瓷原料,其特征在于,包括坯体原料和釉料原料,所述坯体原料按重量百分比包括如下组分:二氧化硅60%-70%,三氧化二铝20%-30%,氧化钾4%-8%,三氧化二铁1.8%-3.2%,氧化镁0.3%-0.5%,氧化钠0.15%-0.2%,氧化钛0.15%-0.3%,氧化钙0.07%-0.12%,二氧化锰0.03%-0.15%,五氧化二磷0.01%-0.5%;所述釉料原料按重量百分比包括如下组分:二氧化硅65%-78%,三氧化二铝7%-13%,氧化钙7%-12%,氧化钾3%-6%,五氧化二磷3%-5%,三氧化二铁1%-3%,氧化钠0.1%-0.5%,氧化镁0.1%-0.4%,氧化钛0.08%-0.25%,二氧化锰0.03%-0.08%。
2.根据权利要求1所述的秘色瓷原料,其特征在于,所述坯体原料和所述釉料原料的平均颗粒尺寸不低于180目。
3.根据权利要求1所述的秘色瓷原料,其特征在于,所述五氧化二磷的平均颗粒尺寸不低于250目。
4.根据权利要求1所述的秘色瓷原料,其特征在于,所述三氧化二铝的平均颗粒尺寸不低于1000目。
5.一种秘色瓷烧制方法,使用如权利要求1-4任一项所述的秘色瓷原料烧制,其特征在于,包括坯体制备、釉料制备、施釉、烧成工序,其中,所述坯体使用所述秘色瓷原料中的坯体原料制备得到,所述釉料使用所述秘色瓷原料中的釉料原料制备得到,所述烧成工序包括:
步骤S1:将施釉完毕的坯体置入窑炉中,烧制3-5小时,将窑温从常温升至525-575℃;
步骤S2:继续烧制2-3小时,将窑温升至950-1000℃后保温1-2小时;
步骤S3:使用还原焰烧制1-2小时,将窑温升至1120-1130℃;
步骤S4:加重还原焰,继续烧制1-2小时,将窑温升至1140-1150℃后保温1-2小时;
步骤S5:将火焰转为氧化焰,缓慢降温3-5小时,直至将窑温降至800-850℃,停火并自然冷却,烧成完毕。
6.根据权利要求5所述的秘色瓷烧制方法,其特征在于,所述坯体制备工序包括:
采集蛏子泥,淘洗并球磨,出浆后晒干,得到坯体原料;
向所述坯体原料中加水调和,可塑成型后晾干,得到素坯;
对所述素坯进行素烧,得到坯体。
7.根据权利要求6所述的秘色瓷烧制方法,其特征在于,所述素烧的过程包括:将所述素坯置入窑炉中,使用所述氧化焰烧制3-5小时,将窑温从常温升至530-550℃,继续烧制2-3小时,将窑温升至1050-1100℃,保温20-40min后自然冷却至室温。
8.根据权利要求5所述的秘色瓷烧制方法,其特征在于,所述釉料制备工序包括:使用松木烧制草木灰,将所述草木灰与蛏子泥和矿物原料混合,加水调和,得到釉料。
9.根据权利要求8所述的秘色瓷烧制方法,其特征在于,所述釉料的浓度为48-52婆梅氏度。
10.根据权利要求5所述的秘色瓷烧制方法,其特征在于,所述施釉工序包括浸釉、喷釉、刷釉、涂釉、淋釉中的一种或几种,且施釉后所述釉料的厚度不超过1mm。
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