CN107759194A - 一种页岩卫生陶瓷及其制备方法 - Google Patents

一种页岩卫生陶瓷及其制备方法 Download PDF

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CN107759194A
CN107759194A CN201711098990.7A CN201711098990A CN107759194A CN 107759194 A CN107759194 A CN 107759194A CN 201711098990 A CN201711098990 A CN 201711098990A CN 107759194 A CN107759194 A CN 107759194A
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冯晋阳
文联辉
徐仁杰
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Sichuan Jinhui Sanitary Ware Co Ltd
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Abstract

本发明公开了一种页岩卫生陶瓷及其制备方法,所述页岩卫生陶瓷的坯体包括以下原料:博爱土10~20wt%,铝矾土5~15 wt%,白矸石5~15wt%,灰矸5~15wt%,远安土1~5wt%,黑泥5~15wt%,页岩5~40wt%,石英10~20wt%,长石5~25wt%。本发明使用页岩作为主要原材料制备出性能优异的卫生陶瓷,能有效降低材料成本,同时保证产品质量,在制备过程中,烧成温度低,可有效减少能源消耗,降低生产成本。

Description

一种页岩卫生陶瓷及其制备方法
技术领域
本发明涉及卫生陶瓷的技术领域。
背景技术
卫生陶瓷是指应用在厨房、卫生间等处的陶瓷制品,其对陶瓷的成型性能、机械强度、表面白度要求较高。现有技术中对于建筑卫生陶瓷主要由黏土类、长石类及石英等原材料通过高温烧制制备得到,目前,国内卫生陶瓷的生产量巨大,且仍处于不断增长之中,每年消耗掉的陶瓷原材料也非常惊人。同时,为了保证产品的成品率和呈色质量,特别是对于坯体白度的要求,制造商所采用的陶瓷原材料的品质也越来越高,使得优质的陶瓷原材料消耗持续增加,个别优质原材料已近枯竭,如景德镇高岭土已经枯竭、广东黑泥的储量也正在迅速降低。
四川夹江地区含有丰富的页岩资源,页岩是粘土岩的构造变种, 由直径小于0.1毫米极细颗粒压紧而成的泥质结构,页岩的矿物成份主要为粘土矿物,此外还有很多碎屑矿物和次生矿物,如: 长石、云母、绿泥石、角闪石等。因此页岩特别适合应用于作为建筑陶瓷的原材料使用,但其含铁量高,烧成容易变形、生产品质不易控制,且产品呈色白度差等原因,一直并没能应用于卫生陶瓷洁具的生产领域。
发明内容
本发明的目的在于提出一种原料中可以大量引入页岩进行卫生陶瓷的制备方法。
本发明的技术方案如下:
一种页岩卫生陶瓷,其坯体包括以下原料:博爱土10~20wt%,铝矾土5~15wt%,白矸石5~15wt%,灰矸5~15wt%,远安土1~5wt%,黑泥5~15wt%,页岩5~40wt%,石英10~20wt%,长石5~25wt%。
其中所述博爱土、灰矸、远安土分别是河南和湖北省本地黏土,其中博爱土属于高岭石类型的硬质黏土,其Al2O3的含量达到40%以上;远安土为普通黏土;灰矸也称青矸,是一种伊利石类型的硬质黏土。
在上述原料中,铝矾土可增加坯料的烧结粘度,拓宽坯料的烧结温度范围,促使组合物整体烧结所需温度降低,博爱土可一方面增加或保持坯体成型性能,另一方面提高坯料的硬度、强度、耐高温性能等;远安土和黑泥可增强坯体组分间的粘合能力,并促进组合物整体力学性能的提升;白矸石和灰矸可将坯体中黏土类原材料进行多样化处理,以避免其中一种原材料成分发生变化后显著影响坯体的性能。
优选的是,将所述页岩卫生陶瓷包括由低温釉料形成的釉质层,该釉质层以透明釉或乳浊釉形式呈现。
进一步优选的是:所述低温釉料为低温透明釉,其原料包括:博爱土10~15wt%,滑石15~30wt%,长石30~50wt%,石英15~30wt%。
另一种进一步的优选实施方案为:所述低温釉料为低温乳浊釉,其包括博爱土5~10wt%,滑石10~15 wt%,长石20~40 wt%,石英10~20 wt%,硅酸锆10~20wt%,氧化锌1~5 wt%。
本发明进一步提出了上述页岩卫生陶瓷的制备方法,包括以下步骤:
(1)将所述坯体的原料进行球磨,至原料通过300~350目的筛的筛余量小于1%;
(2)将球磨后的原料送至陈腐池内进行陈腐,陈腐中泥浆比重为1.75~1.77,陈腐时间为10~12天;
(3)将陈腐后的原料浆液使用微压方式进行注浆成型,注浆时间为100~150min,注浆后巩固时间为30~40min;
(4)将注浆成型后的坯体自然干燥1~3天;
(5)制备釉料;
(6)对完成步骤(4)的坯体进行施釉;
(7)对施釉并干燥后的坯体在1000~1200℃下烧制7~10h,即得到所述页岩卫生陶瓷。
其中,所述微压优选为压力等于或小于0.2kgN。
所述釉料可根据实际装饰效果进行选择。
该制备方法的一种优选实施方案为:所述步骤(4)中所述干燥的过程为:将施釉后的坯体在50~70℃的干燥室中干燥24~32h。
该制备方法的另一种优选实施方案为:所述步骤(1)中球磨时,坯体原料与研磨球及水的质量比为1:2.0~2.5:0.5~0.9。
该制备方法的另一种优选实施方案为:所述步骤(6)中施釉后釉层厚度为1.8~2.1mm。
该制备方法的另一种优选实施方案为:所述步骤(6)包括两次施釉,分别为在坯体上施加底釉,再于底釉上施加面釉,其中底釉厚度为1~1.2mm,面釉厚度为0.8~0.9mm。
本发明具备以下有益效果:
(1)本发明的卫生陶瓷的一般烧成温度由传统的1220~1250℃降低为1160℃左右,并可以实现更低烧成温度的制备;
(2)本发明的低温透明釉具有良好的透明效果,釉面光洁均一,通过施加低温透明釉的制备方法,可得到具有页岩本体颜色的卫生陶瓷;
(3)本发明的低温乳浊釉具有良好的乳浊效果;
(4)在本发明进一步的优选制备方法中,包括二次施釉的工艺,可制得白度极高的白色卫生陶瓷;
(5)本发明可以大量引入页岩作为卫生陶瓷坯体的原材料,同时通过引入铝矾土和博爱土等原材料,提高了坯料中的氧化铝含量,抑制了因页岩中氧化铁高含量引入造成坯体烧成温度范围显著变窄的影响,从而避免了坯体烧结变形性能的恶化,解决了现有技术中无法通过页岩制备卫生陶瓷的技术问题,拓宽了页岩在建筑陶瓷领域内的应用范围;
(6)因本发明大量使用了页岩作为卫生陶瓷坯体原料,有效降低了卫生陶瓷的材料成本,提高了企业经济效益;
(7)本发明的坯体原料可在较低的烧成温度下制备得到高强度的卫生陶瓷,降低了能源消耗,提高了产品品质,提高了生产效率和经济效益;
(8)本发明的卫生陶瓷中与低温釉料具有良好的结合作用,通过与低温釉料的结合可以得到不同表面装饰效果,有利于卫生陶瓷新品种的培育;
(9)本发明中页岩原材料的使用比例达5~40wt%,平均每件产品可降低生产成本3~5元。
具体实施方式
下面结合实施例对本发明进行进一步地说明。
实施例1
通过以下步骤制备页岩卫生陶瓷:
(1)原料配比:按照坯体原料的百分比称量混合。
坯体原料的组分配比:博爱土15wt%,铝矾土8wt%,白矸石10wt%,灰矸5wt%,远安土2wt%,黑泥8wt%,页岩30wt%,石英10wt%,长石12wt%。
(2)球磨:将称量后的坯体原料按料:球:水=1:2.3:0.7的比例加入球磨机进行球磨处理;球磨到325目筛余小于1,出磨时过80目筛送到陈腐浆池进行陈腐;
(3)陈腐:陈腐池内泥浆中水分的质量分数为30~32%,比重为1.75~1.77,经过12天陈腐,陈腐期间低速搅拌机不间断搅拌;
(4)注浆成型:采用微压注浆方式,注浆时间为130分钟,巩固时间为35分钟;
(5)干燥:在成型车间内将坯体自然干燥2天;
(6)釉料加工:按照釉料组分制备釉浆。
采用低温透明釉装饰,釉料配方为:博爱土10 wt%,滑石30wt%,长石45wt%,石英15wt%。
(7)施釉:采用压力喷釉方式对生坯进行喷釉;喷釉操作中釉层厚度为1.1~1.3mm;
(8)二次干燥:在65度干燥室强制干燥30小时;
(9)烧成:在1180℃的隧道窑内进行烧成,烧成周期为9小时,得到卫生陶瓷成品。
实施例2
在实施例1的基础上,
步骤(6)釉料加工中替换为低温乳浊釉,其配方为:博爱土10 wt%,滑石20wt%,长石35wt%,石英10 wt%,硅酸锆20wt%,氧化锌5 wt%。
其他部分与实施例1完全相同。
实施例3
在实施例1的基础上,
步骤(1)中坯体原料的组分配比替换为:博爱土15 wt%,铝矾土8 wt%,白矸石10 wt%,灰矸5wt%,远安土1 wt%,黑泥5 wt%,页岩40 wt%,石英10 wt%,长石6wt%。
其他部分与实施例1完全相同。
实施例4
在实施例2的基础上,
步骤(1)中坯体原料的组分配比替换为:博爱土15 wt%,铝矾土8 wt%,白矸石10 wt%,灰矸5wt%,远安土1 wt%,黑泥5 wt%,页岩40 wt%,石英10 wt%,长石6wt%。
其他部分与实施例2完全相同。
实施例5
在实施例1的基础上,
所述步骤(7)替换为包括两次施釉,分别为在坯体上施加底釉,再于底釉上施加面釉,其中底釉厚度为1~1.2mm,面釉厚度为0.8~0.9mm,底釉与面釉均为同样的低温透明釉。
其他部分与实施例1完全相同。
实施例6
在实施例2的基础上,
所述步骤(7)替换为包括两次施釉,分别为在坯体上施加底釉,再于底釉上施加面釉,其中底釉厚度为1~1.2mm,面釉厚度为0.8~0.9mm,底釉与面釉均为所述低温乳浊釉。
其他部分与实施例1完全相同。
实施例7
在实施例1的基础上,
所述步骤(7)替换为包括两次施釉,分别为在坯体上施加底釉,再于底釉上施加面釉,其中底釉厚度为1~1.2mm,面釉厚度为0.8~0.9mm,其中面釉为同样的低温透明釉,底釉为与实施例2相同的低温乳浊釉。
其他部分与实施例1完全相同。
测试实施例1~实施例7的产品,其平均烧成温度降低为1160℃左右,单独施加低温透明釉的卫生陶瓷烧制后釉面光洁均一,可得到具有页岩本体颜色的卫生陶瓷,装饰效果佳,单独施加低温乳浊釉的卫生陶瓷表面具有良好的白色乳浊效果;进行二次施釉的产品白度极高,产品强度、硬度均高于标准要求,同时加工性能好,加工后基本无形变产生;平均每件产品可降低生产成本3~5元。
上述实施例仅仅是为清楚地说明本发明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。而由此所引申出的显而易见的变化或变动仍处于本发明的保护范围之中。

Claims (9)

1.一种页岩卫生陶瓷,其特征在于:所述页岩卫生陶瓷的坯体包括以下原料:博爱土10~20wt%,铝矾土5~15 wt%,白矸石5~15wt%,灰矸5~15wt%,远安土1~5wt%,黑泥5~15wt%,页岩5~40wt%,石英10~20wt%,长石5~25wt%。
2.根据权利要求1所述的页岩卫生陶瓷,其特征在于:所述页岩卫生陶瓷包括由低温釉料形成的釉质层。
3.根据权利要求2所述的页岩卫生陶瓷,其特征在于:所述低温釉料为低温透明釉,其原料包括:博爱土10~15wt%,滑石15~30wt%,长石30~50wt%,石英15~30wt%。
4.根据权利要求2所述的页岩卫生陶瓷,其特征在于:所述低温釉料为低温乳浊釉,其原料包括:博爱土5~10wt%,滑石10~15 wt%,长石20~40 wt%,石英10~20 wt%,硅酸锆10~20wt%,氧化锌1~5 wt%。
5.如权利要求1所述的页岩卫生陶瓷的制备方法,其特征在于:包括以下步骤:
(1)将所述坯体的原料进行球磨,至原料通过300~350目的筛的筛余量小于1%;
(2)将球磨后的原料送至陈腐池内进行陈腐,陈腐中泥浆比重为1.75~1.77,陈腐时间为10~12天;
(3)将陈腐后的原料浆液使用微压注浆方式进行注浆成型,注浆时间为100~150min,注浆后巩固时间为30~40min;
(4)将注浆成型后的坯体自然干燥1~3天;
(5)制备釉料;
(6)对完成步骤(4)的坯体进行施釉;
(7)对施釉并干燥后的坯体在1000~1200℃下烧制7~10h,即得到所述页岩卫生陶瓷。
6.根据权利5所述的页岩卫生陶瓷的制备方法,其特征在于:所述步骤(7)中所述干燥的过程为:将施釉后的坯体在50~70℃的干燥室中干燥24~32h。
7.根据权利5所述的页岩卫生陶瓷的制备方法,其特征在于:所述步骤(1)中球磨时,坯体原料与研磨球及水的质量比为1:2.0~2.5:0.5~0.9。
8.根据权利5所述的页岩卫生陶瓷的制备方法,其特征在于:所述步骤(6)中施釉后釉层厚度为1.8~2.1mm。
9.根据权利8所述的页岩卫生陶瓷的制备方法,其特征在于:所述步骤(6)包括两次施釉,分别为在坯体上施加底釉,再于底釉上施加面釉,其中底釉厚度为1~1.2mm,面釉厚度为0.8~0.9mm。
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