CN113816731A - 一种瓷质铁红墙地砖及其制备方法 - Google Patents
一种瓷质铁红墙地砖及其制备方法 Download PDFInfo
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- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000126 substance Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000001054 red pigment Substances 0.000 claims abstract description 21
- 239000004575 stone Substances 0.000 claims abstract description 19
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- 235000014653 Carica parviflora Nutrition 0.000 claims abstract description 15
- 241000243321 Cnidaria Species 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 239000011734 sodium Substances 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 9
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- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
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- 229910052665 sodalite Inorganic materials 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 59
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- 238000010521 absorption reaction Methods 0.000 abstract description 22
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- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical compound Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 abstract description 3
- 241000220317 Rosa Species 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 27
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 18
- 239000000292 calcium oxide Substances 0.000 description 18
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 18
- 239000000395 magnesium oxide Substances 0.000 description 18
- 239000002002 slurry Substances 0.000 description 12
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910001950 potassium oxide Inorganic materials 0.000 description 7
- 239000012744 reinforcing agent Substances 0.000 description 7
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- 239000007788 liquid Substances 0.000 description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 6
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
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- 239000003795 chemical substances by application Substances 0.000 description 3
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- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 2
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- 229910052598 goethite Inorganic materials 0.000 description 2
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 2
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- 239000004408 titanium dioxide Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910017108 Fe—Fe Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910021646 siderite Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910001773 titanium mineral Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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Abstract
本发明涉及一种瓷质铁红墙地砖及其制备方法,属于建筑陶瓷技术领域。以质量百分含量计,制备所述瓷质铁红墙地砖的原料包括:钾钠石粉65%~79%、粘土15%~25%、膨润土5%~10%和铁红色料1%~5%;以质量百分含量计,所述瓷质铁红墙地砖的化学成分包括:K2O 4.5%~5.5%、Na2O 2%~3%、CaO≤0.4%、MgO≤0.6%和TiO2≤0.3%。本发明提供一种瓷质铁红墙地砖,实现了在1200℃以上高温烧成、吸水率小于等于0.5%,且可以根据铁红色料调配,即加入不同的铁系色料,如坯用珊瑚红、110#氧化铁红、130#氧化铁红和190#氧化铁红,或组合使用,将瓷质墙地砖调配为玫瑰红色、珊瑚红色、深红色。
Description
技术领域
本发明涉及一种瓷质铁红墙地砖及其制备方法,属于建筑陶瓷技术领域。
背景技术
现有的铁红砖多为红坯体陶瓷墙砖,且其制备的原料一般以含铁高的红土、红砂、黄砂、氧化铁红颜料等为主,烧成的温度在1080~1180℃左右,其吸水率一般大于0.5%,不符合瓷质砖吸水率小于等于0.5%的标准,满足不了特定客户的需求。为了达到吸水率小于等于0.5%的要求,该领域技术人员会尽量提高坯体配方中钙镁熔剂的含量,使整个烧制过程更易进行,配合升高烧成温度至1200℃以上,以达到吸水率小于等于0.5%的要求。但在温度1200℃以上高温时,Fe2O3会与较多的CaO、MgO发生反应,生成不同形态铁的化合物和四氧化三铁,导致不同的颜色,如土啡色、黄褐色、黑褐色。因此陶瓷坯体中熔剂成分CaO、MgO含量高且窑炉温度1200℃以上时难以生产瓷质铁红墙地砖。
因此,本申请的发明人研发了一种能在1200℃以上温度烧成的瓷质铁红墙地砖。
发明内容
本发明的目的在于克服现有技术的不足,提供一种在1200℃以上高温烧成且吸水率小于等于0.5%的瓷质铁红墙地砖;本申请的发明人通过合理配置瓷质铁红墙地砖的化学成分K2O、Na2O、CaO、MgO和TiO2的含量,来控制瓷质铁红墙地砖坯在高温烧制过程中的反应,获得吸水率≤0.5%以及颜色为多种红色效果的瓷质铁红墙地砖。
为实现上述目的,本发明采取的技术方案为:一种瓷质铁红墙地砖,以质量百分含量计,制备所述瓷质铁红墙地砖的原料包括:钾钠石粉65%~79%、粘土15%~25%、膨润土5%~10%和铁红色料1%~5%;其中,钾钠石粉、粘土和膨润土为基础原料;以质量百分含量计,所述瓷质铁红墙地砖的化学成分包括:K2O 4.5%~5.5%、Na2O 2%~3%、CaO≤0.4%、MgO≤0.6%和TiO2≤0.3%。
本发明提供瓷质铁红墙地砖的原料配方以钾钠石粉为主,粘土和膨润土为辅,以铁红色料发色。为保证本发明所述的瓷质铁红墙地砖的发色要求,严格控制配方中氧化钾的含量,氧化钾含量越高发色强度越深、颜色越稳定;另外,以氧化钠成份作为辅助助熔剂成份,保证产品高温烧结,降低烧成后产品的吸水率。
为了保证发色要求,必须严格控制泥砂石原料中氧化钙、氧化镁、氧化钛和氧化铁的含量,其含量越低发色越纯,颜色越红,从而不发黄发黑。
原料中的氧化钙、氧化镁成份,在高温烧成条件下易与铁红反应生成其它颜色的物质,使陶瓷砖颜色往土啡色、黄褐色方向呈色,达不到需要的铁红色效果,因此,本发明提供瓷质铁红墙地砖的原料配方中没有加入滑石类、硅灰石类、石灰粒类等钙镁类原材料作为助熔剂。
制备所述瓷质铁红墙地砖的基础原料均为泥砂石原料,而现有的泥砂石原料中含铁钛矿物杂质有针铁矿(HFeO2)、水针铁矿(HFeO2·nH2O)、赤铁矿(Fe2O3)、黄铁矿(FeS2)、菱铁矿(FeCO3)以及钛铁矿(FeTiO3)和褐铁矿等,这些铁钛矿物杂质对呈色鲜艳度都有很大影响,因此泥砂石原料化学成分中铁钛含量应尽量控制低于限值,其含量越低发色越纯,颜色越鲜红。
作为本发明所述的瓷质铁红墙地砖的一种优选实施方式,以质量百分含量计,所述瓷质铁红墙地砖除铁红色料以外的基础浆料化学成分还包括:SiO2 68%~73%、Al2O313.5%~18%、Fe2O3 0.5%~0.65%和酌减2.5%~3.5%。
作为本发明所述的瓷质铁红墙地砖的一种优选实施方式,以质量百分含量计,所述钾钠石粉的化学成分包括:CaO≤0.5%、MgO≤0.5%、K2O≥4%、Na2O≥1.5%、Fe2O3≤0.8%和TiO2≤0.2%。
作为本发明所述的瓷质铁红墙地砖的一种优选实施方式,以质量百分含量计,所述粘土的化学成分包括:CaO≤0.3%、MgO≤0.6%、Fe2O3≤1.5%和TiO2≤0.8%。
作为本发明所述的瓷质铁红墙地砖的一种优选实施方式,以质量百分含量计,所述膨润土的化学成分包括:CaO≤0.3%、MgO≤2%、Fe2O3≤1.3%、TiO2≤0.5%。
作为本发明所述的瓷质铁红墙地砖的一种优选实施方式,所述铁红色料为坯用珊瑚红、110#氧化铁红、130#氧化铁红和190#氧化铁红中的至少一种。这些色料在坯体中氧化钙、氧化镁、二氧化钛含量较低、氧化钾含量高的条件下,发色强度高、呈色深红;通过组合加入色料,色调还可调为玫瑰红色、珊瑚红色、深红色等。本发明所述的铁红色料有较强的助熔效果,有助于产品烧结,吸水率更低。
在保证坯体强度的情况下,可以适当加入陶瓷坯体增强剂,使粘土原料和膨润土原料尽可能少用,从而降低坯体的烧成温度,减少三氧化二铁和二氧化钛的加入,提高坯体发色的鲜艳度。所述陶瓷坯体增强剂为一种陶瓷坯体液体增强剂,所述陶瓷坯体液体增强剂为水溶性聚合液,其成分为羧甲基纤维素类聚合液。
本发明的另一目的是提供所述瓷质铁红墙地砖的制备方法,包括如下步骤:
(1)按配方称取符合要求的各原料,将除铁红色料外的各原料球磨制浆,过筛除铁,然后再加入铁红色料,搅拌混合均匀,获得混合浆料;
(2)将步骤(1)所述的混合浆料进行喷雾制粉,再混合斑点和干粒,压制成型,获得生坯;或者将步骤(1)所述的混合浆料进行喷雾制粉,再混合斑点和干粒,压制成型,获得生坯;
(3)将步骤(2)获得的生坯进行干燥、施釉、喷墨印花,然后进行1200℃以上温度烧成后,再磨边抛光,得到所述瓷质铁红墙地砖;或者将步骤(2)获得的生坯表面喷涂着色剂,然后进行1200℃以上温度烧成,制得所述瓷质铁红墙地砖。
作为本发明所述的制备方法的优选实施方式,所述步骤(3)中,所述烧成的温度为1200℃~1280℃。
与现有技术相比,本发明的有益效果为:
(1)本发明提供一种瓷质铁红墙地砖,实现了在1200℃以上高温烧成、吸水率小于等于0.5%,且可以根据铁红色料调配,即加入不同的铁系色料,如坯用珊瑚红、110#氧化铁红、130#氧化铁红和190#氧化铁红,或组合使用,将瓷质墙地砖调配为玫瑰红色、珊瑚红色、深红色;
(2)本申请的发明人提供了一种通过合理配置配方中K2O、Na2O、CaO、MgO和TiO2各氧化物成分的含量,来控制瓷质铁红墙地砖坯在高温烧制过程中的反应,获得吸水率≤0.5%以及颜色为多种红色效果的瓷质铁红墙地砖的配方;为保证本发明所述的瓷质铁红墙地砖的发色要求,严格控制氧化钾的含量,氧化钾含量越高发色强度越深,并以氧化钠成份作为辅助助熔剂成份,保证产品高温烧结,降低烧成后产品吸水率;为保证本发明所述的瓷质铁红墙地砖的发色要求,严格控制泥砂石原料中氧化钙、氧化镁、氧化钛和氧化铁的含量越低发色越纯,颜色越红,从而不发黄发黑;本发明提供瓷质铁红墙地砖的原料配方中没有加入滑石类、硅灰石类、石灰粒类等钙镁类原材料作为助熔剂。
附图说明
图1为本发明实施例1提供的一种瓷质铁红墙地砖外形示意图;
图2为本发明实施例2提供的一种瓷质铁红墙地砖外形示意图;
图3为实施例1、对比例1~5的陶瓷砖外观示意图,其中,图3从左至右分别为对应实施例1、对比例1~5的陶瓷砖。
具体实施方式
为更好地说明本发明的目的、技术方案和优点,下面将结合具体附图和实施例对本发明作进一步说明。
实施例1:(瓷质外墙砖)
本实施例为本发明提供的一种瓷质铁红墙地砖(瓷质外墙砖),以质量百分含量计,制备所述瓷质铁红墙地砖的原料包括:钾钠石粉A 40.5%、钾钠石粉B 10%、钾钠石粉C15%、钾钠石粉D 11.5%、粘土A 5%、粘土B 5%、粘土C 5%、膨润土类原料6%、190#氧化铁红色料1%和坯用珊瑚红色浆1%。
上述瓷质铁红墙地砖基础原料的化学成分见表1所述。
上述瓷质铁红墙地砖除铁红色料以外的基础浆料,以质量百分含量计,基础浆料的化学成分为:SiO2 72.60%、Al2O3 16.00%、Fe2O3 0.51%、TiO2 0.12%、CaO 0.28%、MgO0.25%、K2O 5.02%、Na2O 2.72%和酌减2.50%。
上述瓷质铁红墙地砖的制备方法,包括如下步骤:
(1)按配方称取符合要求的各原料,将除铁红色料外的各原料入球磨机、加水研磨制基础浆,基础浆料细度控制在200目筛余0.8%~1.2%;将190#氧化铁红色料球磨制成色浆,色浆细度控制在325目筛余0.05%~0.20%;将坯用珊瑚红色料球磨制成色浆,色浆细度控制在325目筛余0.05%~0.20%;加入190#氧化铁红色浆1%、坯用珊瑚红色浆1%至基础浆料中充分混合均匀,获得混合浆料;
(2)用隔膜泵供步骤(1)所述的混合浆料至喷雾干燥塔制粉,压制成型,获得生坯;
(3)将步骤(2)获得的生坯表面喷涂着色剂,然后进行高温1230℃烧成,即可制得所述瓷质铁红墙地砖。
表1:实施例1~2所述的瓷质铁红墙地砖的基础原料的化学成分(%)
实施例2:(瓷质园林砖或瓷质地铺石)
本实施例为本发明提供的一种瓷质铁红墙地砖(瓷质园林砖或瓷质地铺石),以质量百分含量计,制备所述瓷质铁红墙地砖的原料包括:钾钠石粉A 30%、钾钠石粉B 15%、钾钠石粉C 15%、钾钠石粉D 6.2%、粘土A 8%、粘土B 8%、粘土C 6.5%、膨润土类原料8.5%、坯体增强剂0.8%、190#氧化铁红色料1%和坯用珊瑚红色浆1%;其中,所述坯体增强剂为羧甲基纤维素类聚合液。
上述瓷质铁红墙地砖基础原料的化学成分见表1所述。
上述瓷质铁红墙地砖除铁红色料以外的基础浆料,以质量百分含量计,基础浆料的化学成分为:SiO2 71.30%、Al2O3 17.20%、Fe2O3 0.63%、TiO2 0.15%、CaO 0.26%、MgO0.32%、K2O 4.53%、Na2O 2.21%和酌减3.40%。
上述瓷质铁红墙地砖的制备方法,包括如下步骤:
(1)按配方称取符合要求的各原料,将除铁红色料外的各原料入球磨机、加水研磨制基础浆,基础浆料细度控制在200目筛余0.6%~1.0%;将190#氧化铁红色料球磨制成色浆,色浆细度控制在325目筛余0.05%~0.10%;将坯用珊瑚红色料球磨制成色浆,色浆细度控制在325目筛余0.05%~0.10%;加入190#氧化铁红色浆1%、坯用珊瑚红色浆1%至基础浆料中充分混合均匀,获得混合浆料;
(2)用隔膜泵供步骤(1)所述的混合浆料至喷雾干燥塔制粉,再混合斑点和干粒,压制成型,获得生坯;
(3)将步骤(2)获得的生坯进行干燥、施釉、喷墨印花,然后进行高温1280℃烧成,再磨边抛光,即可制得所述瓷质铁红墙地砖。
对比例1~对比例5
对比例1~5为5种陶瓷砖,其制备的原料包括基础原料和坯体增强剂、190#氧化铁红色料和坯用珊瑚红色料;所述基础原料包括钾钠石粉、粘土和膨润土;所述对比例1~5所述陶瓷砖浆料的化学成分如表2所示,对比例1~5所述陶瓷砖的制备方法同实施例1。
表2:对比例1~5所述的陶瓷砖浆料的化学成分
对比例 | SiO<sub>2</sub> | Al<sub>2</sub>O<sub>3</sub> | Fe<sub>2</sub>O<sub>3</sub> | TiO<sub>2</sub> | CaO | MgO | K<sub>2</sub>O | Na<sub>2</sub>O | IL | 合计 |
对比例1 | 68.47 | 16.9 | 2.23 | 0.61 | 1.06 | 1.59 | 2.54 | 2.24 | 4.36 | 100.00 |
对比例2 | 72.25 | 14.78 | 2.36 | 0.09 | 1.48 | 0.38 | 4.79 | 1.92 | 1.95 | 100.00 |
对比例3 | 71.33 | 15.21 | 2.47 | 0.15 | 0.25 | 1.59 | 4.94 | 1.98 | 2.08 | 100.00 |
对比例4 | 71.9 | 14.97 | 2.37 | 1.2 | 0.3 | 0.41 | 4.96 | 1.99 | 1.9 | 100.00 |
对比例5 | 72.57 | 14.96 | 2.83 | 0.31 | 0.21 | 0.35 | 4.94 | 1.94 | 1.89 | 100.00 |
实验例1
本实验例1检测实施例1~2以及对比例1~5所述的陶瓷砖的吸水率和Lab值,结果如表3所示,外观示意图如图1-3所示。
吸水率的测试方法:根据《GB/T3810.3~2016陶瓷砖试验方法第3部分:吸水率、显气孔率、表观相对密度和容重的测定》进行测试。
Lab值的测试:用立式分光测色仪(WN700D)实施例1~2以及对比例1~5所述的陶瓷砖进行检测。
表3:实施例1~2以及对比例1~5所述的陶瓷砖的吸水率和Lab值
图1为本发明实施例1提供的一种瓷质铁红墙地砖外形示意图;图2为本发明实施例2提供的一种瓷质铁红墙地砖外形示意图;图3为实施例1、对比例1~5的陶瓷砖外观示意图,其中,图3从左至右分别为对应实施例1、对比例1~5的陶瓷砖。
由表3的结果显示:在吸水率都小于等于0.5%的结果中,本发明的实施例1和实施例2的红色值分别达19和18,远高于对比例1~5的红色值(分别为:12,13,10,8,14)。
以现有技术的坯体对比例1#坯体,于1180℃温度烧成,烧成时长45分钟,坯体颜色虽呈浅铁红色,但吸水率2.30%,达不到瓷质砖的吸水率标准,满足不了特定客户的需求。但将该坯体置于1230℃,烧成时长45分钟,吸水率0.30%,吸水率达到了瓷质砖的标准,但由于坯体化学成分中氧化钾含量低,且氧化钙、氧化镁含量高,在高温烧成下坯体颜色呈浅咖啡色,Lab值(45,12,11)完全改变了铁红色的效果。
而本发明实施例1所述的一种瓷质铁红墙地砖(瓷质外墙砖),其化学成分中氧化钾含量高,且氧化钙、氧化镁、氧化钛含量低,于1230℃高温、45分钟烧成,产品吸水率:0.05%,产品颜色呈深珊瑚红的铁红色,Lab值(38,19,11),符合要求。
对比例1#~对比例5#坯体化学成分见表2,Lab值见表3。对比例2#~对比例5#的实验结果表明,对比例2#坯体中CaO、对比例3#坯体中MgO、对比例4#坯体中TiO2含量都超出限值,对比例5#坯体杂质Fe2O3含量高,对比实施例1#坯体,在1230℃高温、45分钟烧成后,它们的颜色都变暗变黄,红色调降低明显,不符合要求。。
最后所应当说明的是,以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的实质和范围。
Claims (7)
1.一种瓷质铁红墙地砖,其特征在于,以质量百分含量计,制备所述瓷质铁红墙地砖的原料包括:钾钠石粉65%~79%、粘土15%~25%、膨润土5%~10%和铁红色料1%~5%;
以质量百分含量计,所述瓷质铁红墙地砖的化学成分包括:K2O 4.5%~5.5%、Na2O2%~3%、CaO≤0.4%、MgO≤0.6%和TiO2≤0.3%。
2.如权利要求1所述的瓷质铁红墙地砖,其特征在于,以质量百分含量计,所述钾钠石粉的化学成分包括:CaO≤0.5%、MgO≤0.5%、K2O≥4%、Na2O≥1.5%、Fe2O3≤0.8%和TiO2≤0.2%。
3.如权利要求1所述的瓷质铁红墙地砖,其特征在于,以质量百分含量计,所述粘土的化学成分包括:CaO≤0.3%、MgO≤0.6%、Fe2O3≤1.5%和TiO2≤0.8%。
4.如权利要求1所述的瓷质铁红墙地砖,其特征在于,以质量百分含量计,所述膨润土的化学成分包括:CaO≤0.3%、MgO≤2%、Fe2O3≤1.3%、TiO2≤0.5%。
5.如权利要求1所述的瓷质铁红墙地砖,其特征在于,所述铁红色料为坯用珊瑚红、110#氧化铁红、130#氧化铁红和190#氧化铁红中的至少一种。
6.一种瓷质铁红墙地砖的制备方法,其特征在于,所述瓷质铁红墙地砖为权利要求1~5任一所述的瓷质铁红墙地砖,所述制备方法包括如下步骤:
(1)按配方称取符合要求的各原料,将除铁红色料外的各原料球磨制浆,过筛除铁,然后再加入铁红色料,搅拌混合均匀,获得混合浆料;
(2)将步骤(1)所述的混合浆料进行喷雾制粉,压制成型,获得生坯;或者将步骤(1)所述的混合浆料进行喷雾制粉,再混合斑点和干粒,压制成型,获得生坯;
(3)将步骤(2)获得的生坯进行干燥、施釉、喷墨印花,然后进行1200℃以上温度烧成后,再磨边抛光,得到所述瓷质铁红墙地砖;或者将步骤(2)获得的生坯表面喷涂着色剂,然后进行1200℃以上温度烧成,制得所述瓷质铁红墙地砖。
7.如权利要求6所述的制备方法,其特征在于,所述步骤(3)中,所述烧成的温度为1200℃~1280℃。
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