CN107032755A - 一种强化瓷质炖盅的制备方法 - Google Patents

一种强化瓷质炖盅的制备方法 Download PDF

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CN107032755A
CN107032755A CN201710278901.0A CN201710278901A CN107032755A CN 107032755 A CN107032755 A CN 107032755A CN 201710278901 A CN201710278901 A CN 201710278901A CN 107032755 A CN107032755 A CN 107032755A
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glaze
weight
stew cup
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porcelain
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黄楚钦
刘正茂
钟逸欢
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Guangdong Tonze Electric Co Ltd
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Abstract

本发明涉及陶瓷领域,具体是一种强化瓷质炖盅的制备方法。本发明的坯料组成包括:机锥高岭土、淘洗高岭土、石英、氧化铝、煅烧滑石、钾长石;釉料组成包括:钾长石、石英、方解石、煅烧滑石、淘洗高岭土、煅烧氧化铝、氧化锌;强化瓷质炖盅的制备方法包括:准备坯料及釉料原料、将坯料中原料混和后加清水进行湿法球磨、将釉料中原料混和后加清水混和进行球磨、用坯料和清水混合的泥浆清洗石膏模具表面降低碱性、取坯料滚压成型、用清水和毛刷洗刷泥质胎体表面、用釉料加清水调配釉浆浸釉、将经施釉的泥质胎体烧制成强化瓷质炖盅。本发明目的在于提供一种强度、耐摩擦、寿命等方面优于陶质炖盅、普通瓷质炖盅的强化瓷质炖盅的制备方法。

Description

一种强化瓷质炖盅的制备方法
技术领域
本发明涉及陶瓷领域,具体是一种强化瓷质炖盅的制备方法。
背景技术
在日用陶瓷行业中,强化瓷质是强度相对高于普通瓷质和陶质的一类瓷质。炖盅是一种可以用于接触食物的容器,通常用以炖(烹调)食物(通常为补品)。食物存放于炖盅中,炖盅连食物一起放置于另一个容器内(如锅等容器)。有时一个容器内放置多个炖盅。容器内加水,采用明火或电热等方式对容器加热,提高容器内水的温度,水温通过炖盅将热量传递给炖盅内的食物,形成烹调。这种烹调方法,也称为隔水炖,能使食物美味,营养成份损失少,是中式烹调和民间常用的一种烹调方式。
陶瓷炖盅卫生实用,经常在家用电器中配套使用。炖盅使用频繁,装入食物后进入锅中,经烹调后,炖盅直接上餐桌,用餐后炖盅又作清水和消毒处理。因此,要求炖盅耐碰撞和耐摩擦,经久耐用,易于清洗。
瓷质炖盅的强度通常优于陶质炖盅,但采用普通瓷质制成的炖盅,在强度和耐摩擦方面,不够理想,使用寿命短。如何采用经济和可行的方法,制备出强化瓷质炖盅,是日用陶瓷行业和家用电器行业研发和创新的课题。
发明内容
本发明的目的在于提供一种强度、耐摩擦、寿命等方面优于陶质炖盅、普通瓷质炖盅的强化瓷质炖盅的制备方法。
本发明的强化瓷质炖盅的制备方法,其特征在于,包括以下生产步骤:
(1)坯料制备
取机锥高岭土20—24重量份、淘洗高岭土44—48重量份、石英8—12重量份、氧化铝4—6重量份、煅烧滑石1—3重量份、钾长石14—16重量份作为原料。
上述机锥高岭土是取未经过淘洗和加工的高岭土原矿,采用机锥(机械捶打)处理后制得,处理时间为16—18小时;上述淘洗高岭土,是取高岭土原矿采用水进行淘洗,除去其中的游离石英及其它岩屑后制得;上述煅烧滑石是取滑石经过1200℃煅烧后制得。
将上述原料混和后加清水进行湿法球磨,经球磨原料经除铁机除铁,经除铁后原料过220目筛,经过筛原料存放入储料池进行陈腐,陈腐时间72—80小时,经陈腐原料通过压滤机压滤成泥片,经压滤泥片通过练泥机进行练泥,制备出质量含水率为21—23%的坯料备用。
下面简述上述配方原料应用及坯料制备工艺的特殊作用:采用部分高岭土进行机锥处理,使原料形成鳞片状的细颗粒,能使制备的坯料密度增大,可塑性增强,解决含铝量较高时坯料产生的可塑性下降问题;采用部分高岭土进行淘洗,去除高岭土中固有的游离石英和岩屑等杂质,也使高岭土成为粘度较高的淘洗泥,单位原料中的含铝量比例加大,提高坯料的含铝量;加入氧化铝,能够补充坯料的含铝量,使坯料含铝量达到强化瓷质的要求;加入石英,是补充二氧化硅,调节坯料中的硅铝比例;加入煅烧滑石,去除杂质后的滑石,也相当于加入氧化镁,在产品的烧成中起到助熔作用,同时可提高产品的耐热冲击强度;加入钾长石,可使产品烧成之后胎体致密化;坯料制备工艺中,对经过筛的原料存入储泥池中进行陈腐72小时以上,可使制备的坯料的粘度和可塑性提高,使含铝量较高的坯料在产品成型过程不易开裂,产品合格率提高。以上原料的搭配和工艺的配合,多方位确保炖盅产品含铝量较高且达到高瓷质强度,又能使坯料符合炖盅产品成型及烧成等生产环节的要求。
(2)釉料制备
取钾长石38—42重量份、石英24—26重量份、方解石11—13重量份、煅烧滑石7—9重量份、淘洗高岭土9—11重量份、煅烧氧化铝1—3重量份、氧化锌2—4重量份作为原料。
所述淘洗高岭土、煅烧滑石与步骤(1)中的相同;上述煅烧氧化铝是取氧化铝经过1250℃煅烧后制得。
将上述原料混和后,加入与混和原料的重量比为1:1的清水进行混和,然后进行球磨,经球磨的原料经除铁机进行除铁,经除铁后原料过1500目筛,制成釉料备用。
下面简述上述配方原料应用的特殊作用:本釉料属于透明釉、膨胀系数与坯料相近,确保坯釉结合良好;釉料能够确保烧成后的釉层密实、硬度高、耐摩擦,而且透明度好。采用大份量的钾长石,是因为钾长石是天然熔块,能提高釉层的致密度和机械强度,而且能构成瓷的玻璃态基质,提高透明度;采用石英相当于补充二氧化硅,能提高釉面耐磨性、硬度、白度;采用方解石,是对瓷釉烧成中起助熔作用,也使坯与釉结合良好;采用煅烧滑石,可以使瓷釉的线膨胀系数降低,弹性提高,促使中间层生成,提高产品的热稳定性;采用淘洗高岭土,是利用其含有的二氧化硅和氧化铝,在烧成中与原料中固有的钾、钠、钙、镁等化合形成低共熔混合物,可使烧成温度下降;采用煅烧氧化铝,是因经煅烧氧化铝适用于细磨加工,氧化铝能有效地防止瓷釉在烧成过程的析晶;采用氧化锌,可以提高釉层的光洁度,而且能降低产品的铅溶出量,提高产品使用的安全卫生效果。
(3)石膏模具表面除碱处理
按日用陶瓷生产常规的石膏模具制备方法,采用石膏粉加水灌注成石膏模具,模具内腔为炖盅状;然后取上述备用的坯料,取1重量份坯料和100重量份清水,混合打成泥浆,采用软布和泥浆对石膏模具的内腔进行清洗,降低石膏模具表面的碱性。
下面讲述上述石膏模具清洗除碱的作用:因制成的石膏模具表面带有碱性,在产品成型过程中,模具表面易于粘附坯料,影响产品外观质量;通过采用泥浆清洗,可以有效地降低碱性,提高产品成型的合格率。
(4)滚压成型
取上述备用的坯料,按日用陶瓷生产常规的滚压成型方法,采用滚压成型机在经过除碱处理后的石膏模具中进行滚压成型,制备出炖盅状泥质胎体。
(5)修坯洗水
采用清水和毛刷,对泥质胎体的表面进行洗刷,使泥质胎体表面光滑。
(6)施釉
采用上述备用的釉料,加清水调配为釉浆,釉浆浓度调配至38—42波美度;采用日用陶瓷生产常规的手工浸釉方式,对泥质胎体作浸釉处理3—5秒,经浸釉的胎体自然干燥6—10小时。
(7)烧成
将经施釉的泥质胎体放入窑炉进行烧成,烧成温度为1260—1280℃,烧成时间9—11小时,烧成气氛为氧化气氛;泥质胎体经烧成之后,出窑即为强化瓷质炖盅产品。
本发明制成的强化瓷质炖盅产品,器型规整,釉层密实光滑,使用中耐摩擦和易于清洗;产品的抗冲击强度不低于1.5J/cm2,相对其它普通瓷质或陶质的产品更耐用;产品质量符合GB/T3532《日用瓷器》标准要求,产品卫生指标符合GB12651《与食物接触的陶瓷制品铅、镉溶出量允许极限》标准要求,也符合美国FDA7117.06和7117.07准则要求。
具体实施方式
实施例:
强化瓷质炖盅的制备方法,包括以下生产步骤:
(1)坯料制备
取机锥高岭土22重量份、淘洗高岭土45重量份、石英10重量份、氧化铝5重量份、煅烧滑石2重量份、钾长石15重量份作为原料。
上述机锥高岭土是取未经过淘洗和加工的高岭土原矿,采用机锥处理后制得,处理时间为16—18小时;上述淘洗高岭土,是取高岭土原矿采用水进行淘洗,除去其中的游离石英及其它岩屑后制得;上述煅烧滑石是取滑石经过1200℃煅烧后制得。
将上述原料混和后加清水进行湿法球磨,经球磨原料经除铁机除铁,经除铁后原料过220目筛,经过筛原料存放入储料池进行陈腐,陈腐时间75小时,经陈腐原料通过压滤机压滤成泥片,经压滤泥片通过练泥机进行练泥,制备出质量含水率为21—23%的坯料备用。
(2)釉料制备
取钾长石40重量份、石英25重量份、方解石12重量份、煅烧滑石8重量份、淘洗高岭土10重量份、煅烧氧化铝2重量份、氧化锌3重量份作为原料。
所述淘洗高岭土、煅烧滑石与步骤(1)中的相同;上述煅烧氧化铝是取氧化铝经过1250℃煅烧后制得。
将上述原料混和后,加入与混和原料的重量比为1:1的清水进行混和,然后进行球磨,经球磨的原料经除铁机进行除铁,经除铁后原料过1500目筛,制成釉料备用。
(3)石膏模具表面除碱处理
按日用陶瓷生产常规的石膏模具制备方法,采用石膏粉加水灌注成石膏模具,模具内腔为炖盅状;然后取上述备用的坯料,取1重量份坯料和100重量份清水,混合打成泥浆,采用软布和泥浆对石膏模具的内腔进行清洗,降低石膏模具表面的碱性。
(4)滚压成型
取上述备用的坯料,按日用陶瓷生产常规的滚压成型方法,采用滚压成型机在经过除碱处理后的石膏模具中进行滚压成型,制备出炖盅状泥质胎体。
(5)修坯洗水
采用清水和毛刷,对泥质胎体的表面进行洗刷,使泥质胎体表面光滑。
(6)施釉
采用上述备用的釉料,加清水调配为釉浆,釉浆浓度调配至40波美度;采用日用陶瓷生产常规的手工浸釉方式,对泥质胎体作浸釉处理4秒,经浸釉的胎体自然干燥8小时。
(7)烧成
将经施釉的泥质胎体放入窑炉进行烧成,烧成温度为1270℃,烧成时间10小时,烧成气氛为氧化气氛;泥质胎体经烧成之后,出窑即为强化瓷质炖盅产品。
本实施例制成的强化瓷质炖盅产品,器型规整,釉层密实光滑,使用中耐摩擦和易于清洗;产品的抗冲击强度不低于1.5J/cm2,相对其它普通瓷质或陶质的产品更耐用;产品质量符合GB/T3532《日用瓷器》标准要求,产品卫生指标符合GB12651《与食物接触的陶瓷制品铅、镉溶出量允许极限》标准要求,也符合美国FDA7117.06和7117.07准则要求。
对比例1:与实施例不同的是,坯料中的高岭土不经机锥处理,坯料可塑性下降,产品在成型过程易于开裂报废。
对比例2:与实施例不同的是,坯料中的淘洗高岭土减少为20重量份,坯料中含铝量下降,坯料粘度下降,制成的产品耐冲击强度下降。
对比例3:与实施例不同的是,坯料中的氧化铝加入量增加至12重量份,制成的坯料可塑性下降,产品在成型过程开裂报废。
对比例4:与实施例不同的是,坯料中不加入煅烧滑石,经烧成的产品耐冲击强度不足。
对比例5:与实施例不同的是,坯料制备中,经过筛原料在储泥池进行陈腐,陈腐时间减为10小时,制成的坯料粘度和可塑性下降,产品在成型生产过程合格率下降。
对比例6:与实施例不同的是,釉料中不加入方解石,产品的坯釉结合差,易于产生釉层缺陷。
对比例7:与实施例不同的是,釉料中不加入氧化锌,经烧成的产品釉层光洁度和耐磨性差。
对比例8:与实施例不同的是,石膏模具不采用泥浆进行清洗,石膏模具在生产中易于粘附坯料,降低产品合格率。

Claims (9)

1.一种强化瓷质炖盅,其特征在于:坯料的化学组成及重量份数包括:机锥高岭土20—24重量份、淘洗高岭土44—48重量份、石英8—12重量份、氧化铝4—6重量份、煅烧滑石1—3重量份、钾长石14—16重量份。
2.一种强化瓷质炖盅,其特征在于:釉料的化学组成及重量份数包括:钾长石38—42重量份、石英24—26重量份、方解石11—13重量份、煅烧滑石7—9重量份、淘洗高岭土9—11重量份、煅烧氧化铝1—3重量份、氧化锌2—4重量份。
3.权利要求1-2的强化瓷质炖盅的制备方法,其特征在于:制作流程如下:
1)准备坯料及釉料原料备用;
2)将坯料原料混和后加清水进行湿法球磨,经球磨原料经除铁机除铁,经过筛原料存放入储料池进行陈腐,经陈腐原料通过压滤机压滤成泥片,经压滤泥片通过练泥机进行练泥,制备出坯料备用;
3)将釉料原料混和后,加入清水进行混和,然后进行球磨,经球磨的原料经除铁机进行除铁,经除铁后筛原料,制成釉料备用;
4)按日用陶瓷生产常规的石膏模具制备方法,采用石膏粉加水灌注成石膏模具,模具内腔为炖盅状;然后取上述备用的1重量份坯料混合清水打成泥浆,采用软布和泥浆对石膏模具的内腔进行清洗,降低石膏模具表面的碱性;
5)取上述备用的坯料,按日用陶瓷生产常规的滚压成型方法,采用滚压成型机在经过除碱处理后的石膏模具中进行滚压成型,制备出炖盅状泥质胎体;
6)采用清水和毛刷,对泥质胎体的表面进行洗刷;
7)采用上述备用的釉料,加清水调配为釉浆,采用日用陶瓷生产常规的手工浸釉方式对泥质胎体作浸釉处理,经浸釉的胎体作自然干燥;
8)将经施釉的泥质胎体放入窑炉进行烧成,烧成气氛为氧化气氛;泥质胎体经烧成之后,出窑即为强化瓷质炖盅。
4.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述坯料及釉料原料,其中部分原料如下制成:取未经过淘洗和加工的高岭土原矿,采用机锥处理16—18小时后制得机锥高岭土;取高岭土原矿采用水进行淘洗,除去其中的游离石英及其它岩屑后制得淘洗高岭土;取滑石经过1200℃煅烧后制得煅烧滑石;取氧化铝经过1250℃煅烧后制得煅烧氧化铝。
5.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述坯料经除铁后原料过220目筛,陈腐时间为72—80小时,经练泥后坯料质量含水率为21—23%。
6.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述釉料原料经混和后,混和原料与清水的混合重量比为1:1,经除铁后原料过1500目筛。
7.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述泥浆所组成的坯料和清水混合比例为1:100。
8.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述釉浆浓度为38—42波美度,对泥质胎体作浸釉处理时间为3—5秒,经浸釉的胎体自然干燥时间为6—10小时。
9.根据权利要求3所述的强化瓷质炖盅的制备方法,其特征在于:所述烧成温度为1260—1280℃,烧成时间9—11小时。
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