CN110818396B - 一种耐高温材料及其制备方法 - Google Patents

一种耐高温材料及其制备方法 Download PDF

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CN110818396B
CN110818396B CN201911205601.5A CN201911205601A CN110818396B CN 110818396 B CN110818396 B CN 110818396B CN 201911205601 A CN201911205601 A CN 201911205601A CN 110818396 B CN110818396 B CN 110818396B
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王林俊
温晓庆
苏玉柱
陈旭峰
李寅明
王图强
毕晟
高长贺
何光明
张增寿
王肇嘉
王巍
曹利兵
谢杰华
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Chengde Jinyu Cement Co ltd
Hebei Ruisuo Solid Waste Engineering Technology Research Institute Co ltd
Tongda Refractory Technologies Co ltd
Beijing Building Materials Academy of Sciences Research
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Hebei Ruisuo Solid Waste Engineering Technology Research Institute Co ltd
Tongda Refractory Technologies Co ltd
Beijing Building Materials Academy of Sciences Research
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Abstract

本发明涉及一种耐高温材料及其制备方法,包括以下原料制备而成:矾土基均质料30份‑80份,废匣钵5份‑35份,添加剂5份‑25份,结合剂1份‑6份,所述添加剂包括金尾矿、钼尾矿和粘土;所述结合剂包括硅灰。本发明提供的耐高温材料,可使得一些工业固废得以利用,制得的材料具有强度高、膨胀性匹配合理以及成本合理等优势。

Description

一种耐高温材料及其制备方法
技术领域
本发明涉及建材技术领域;具体涉及一种耐高温材料及其制备方法。
背景技术
随着水泥窑协同处置的应用,有害成分的循环富集加剧了预热器系统内结皮形成,影响通风,严重的造成堵塞。抗结皮浇注料在预热器内使用,取得了一定的抗结皮效果。随着水泥窑协同处置危废比例的增加,有害物质的渗透腐蚀和清除时的机械损伤进一步降低浇注料的综合性能。而高温釉用于坯体表面可阻止有害物质的渗透腐蚀及结皮沉积,但坯体需具备与釉的适应性和工艺上可一次烧成的匹配性。从而满足最高使用温度1300℃时的需求。
发明内容
针对现有技术中存在的缺陷和不足,本发明提供了一种耐高温材料及其制备方法。
本发明的目的之一在于提供一种耐高温材料坯体,包括以下原料制备而成:
Figure BDA0002296857870000011
所述添加剂包括金尾矿、钼尾矿和粘土;所述结合剂包括硅灰。本发明中,以此(高温釉用)坯体制成的耐高温材料具有较高的强度、合理匹配的膨胀性能,从而实现较好的使用价值和经济价值。
本发明另一方面提供一种耐高温材料,包括由所述的耐高温材料坯体制备而成。
根据本发明的一些优选实施方式,所述添加剂为金尾矿、钼尾矿和粘土;优选的,所述金尾矿、所述钼尾矿和所述粘土的质量比为(1-5):(1-5):(3-15)。
根据本发明的一些优选实施方式,所述结合剂的粒径为0.010mm以下,所述结合剂优选为硅灰,所述矾土基均质料的粒径为5mm以下,所述废匣钵的粒径为2mm以下,所述添加剂的粒径为0.088mm以下。
根据本发明的一些优选实施方式,所述矾土基均质料为矾土基耐火M60均质料;和/或,所述废匣钵为发泡陶瓷用后的废匣钵;和/或,所述添加剂为屿耳崖金尾矿、平泉钼尾矿和宽城粘土;和/或,所述耐高温材料的表面包覆釉层,所述釉层优选为Li2O-MgO-AL2O3-SiO2系低膨胀釉;和/或,所述耐高温材料的最高使用温度为1300℃。
本发明再一方面提供一种所述的耐高温材料的制备方法,包括如下步骤:
步骤1),配料:按比例称取以下原料:矾土基均质料、废匣钵、添加剂和结合剂;
步骤2),成型:将步骤1)中所述原料在搅拌机中搅拌混合,然后加工成型,得耐高温材料坯体;
步骤3),施釉:将步骤2)中所述耐高温材料坯体进行干燥,然后在表面优选为工作面施釉,并烘干,即得耐高温材料前体;
步骤4),烧成:将步骤3)中所述耐高温材料前体在窑炉中进行烧成,即得。
根据本发明的一些优选实施方式,步骤4)中,所述烧成的温度控制方式为:
由初始温度升温至600℃,控制升温速度为10-50℃/h,
在600℃下,保温1-8h,
600-1380℃,控制升温速度为10-60℃/h,
在1230-1380℃下,保温1-12h。
根据本发明的一些优选实施方式,步骤3)中,所述烘干的条件:在110℃下保温1-12h。
根据本发明的一些优选实施方式,步骤1)前还包括,将所述矾土基均质料制成5mm以下的颗粒,将所述废匣钵制成粒径为2mm以下,将所述添加剂制成粒径不大于0.088mm的细粉。
根据本发明的一些优选实施方式,步骤2)中,所述加工成型包括机压成型或振动成型,优选的,压制后的密度为2.05-2.55g/cm3
根据本发明的一些优选实施方式,本发明提供一种(高温釉用坯体)耐高温材料的制备方法,包括以下各步骤:
1)配料:所用原料是:矾土基耐火M60均质料、发泡陶瓷用后废匣钵、添加剂为屿耳崖金尾矿、平泉钼尾矿、宽城粘土,结合剂为硅灰;在配料前将矾土基耐火M60均质料加工至5mm以下颗粒,将发泡陶瓷用后废匣钵加工至2mm以下,添加剂均选择不大于0.088mm细粉,硅灰为不大于0.010mm微粉。其重量份优选为:矾土基耐火M60均质料:30份-70份,发泡陶瓷用后废匣钵5份-35份,添加剂:10份-25份,结合剂:1份-6份;
2)成型:将上述原料的混合物在搅拌机中充分混合后,加工成型(可以用不同的成型方法加工成型,根据制品尺寸及要求可选用机压成型和振动成型中的一种),成型后的密度为:2.05-2.55g/cm3
3)施釉:将成型制得的坯体经干燥后在其工作面施釉,并烘干,烘干要求110℃保温1-12h;
4)烧成:将施釉后的坯体在窑炉中进行烧成,由常温升温至600℃,控制升温速度10-50℃/h,在600℃保温1-8h;在600-1380℃,控制升温速度10-60℃/h,烧成温度1230-1380℃,保温1-12h。
本发明的有益效果至少在于:本发明提供的耐高温材料,可使得一些工业固废得以利用,使得制备的釉用坯体具有较高的强度、合理匹配的膨胀性能,从而实现较好的使用价值和经济价值。
具体实施方式
以下实施例用于说明本发明,但不用来限制本发明的范围。实施例中未注明具体技术或条件者,按照本领域内的文献所描述的技术或条件,或者按照产品说明书进行。所用仪器等未注明生产厂商者,均为可通过正规渠道商购买得到的常规产品。本发明中所用的原料均可在国内产品市场方便买到。本发明中,所述釉可以是本领域常规釉料,优选的,以下实施例中,采用的釉是Li2O-MgO-AL2O3-SiO2系低膨胀釉,添加剂(屿耳崖金尾矿粉,平泉钼尾矿粉,宽城粘土粉)均选择不大于0.088mm细粉,硅灰为不大于0.010mm微粉。
实施例1
配料:按重量份数比例称取矾土基耐火M60均质料颗粒(不大于5mm)69份,发泡陶瓷用后废匣钵颗粒(不大于2mm)10份,屿耳崖金尾矿粉5份,平泉钼尾矿粉5份,宽城粘土粉8份,硅灰微粉3份。
成型:振动法成型,将配制好的泥料装入振动台上的钢模中,振动平台的振动频率为50赫兹,振幅为0.1mm,成型载荷为6kPa。
干燥:110℃×24h。
施釉:在其工作面施釉,而后烘干110℃×4h。
烧成:空气气氛烧成,烧成加热曲线:
Figure BDA0002296857870000041
Figure BDA0002296857870000051
冷却至常温
性能指标:耐压强度大于70MPa,釉与坯体结合良好,釉层光滑不开裂。
实施例2
配料:按重量份数比例称取矾土基耐火M60均质料颗粒(不大于5mm)62份,发泡陶瓷用后废匣钵颗粒(不大于2mm)15份,屿耳崖金尾矿粉3份,平泉钼尾矿粉5份,宽城粘土粉10,硅灰微粉5份。
成型:400吨摩擦压力机成型,半成品体密控制在2.45-2.50g/cm3
干燥:110℃×24h。
施釉:在其工作面施釉,而后烘干110℃×8h。
烧成:空气气氛烧成,烧成加热曲线:
Figure BDA0002296857870000052
冷却至常温
性能指标:耐压强度大于70MPa,釉与坯体结合良好,釉层光滑不开裂。
实施例3
配料:按重量份数比例称取矾土基耐火M60均质料颗粒(不大于5mm)49份,发泡陶瓷用后废匣钵颗粒(不大于2mm)25份,屿耳崖金尾矿粉5份,平泉钼尾矿粉3份,宽城粘土粉12份,硅灰微粉6份。
成型:400吨摩擦压力机成型,半成品体密控制在2.35-2.40g/cm3
干燥:110℃×24h。
施釉:在其工作面施釉,而后烘干110℃×8h。
烧成:空气气氛烧成,烧成加热曲线:
Figure BDA0002296857870000061
冷却至常温
性能指标:耐压强度大于60MPa,釉与坯体结合良好,釉层光滑不开裂。
实施例4
配料:按重量份数比例称取矾土基耐火M60均质料颗粒(不大于5mm)53份,发泡陶瓷用后废匣钵颗粒(不大于2mm)35份,屿耳崖金尾矿粉2、平泉钼尾矿粉4、宽城粘土粉15,硅灰微粉6份。
400吨摩擦压力机成型,半成品体密控制在2.15-2.20g/cm3
干燥:110℃×24h。
施釉:在其工作面施釉,而后烘干110℃×8h。
烧成:空气气氛烧成,烧成加热曲线:
Figure BDA0002296857870000062
冷却至常温
性能指标:耐压强度大于60MPa,釉与坯体结合良好,釉层光滑不开裂。
虽然,上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述,但在本发明基础上,可以对之作一些修改或改进,这对本领域技术人员而言是显而易见的。因此,在不偏离本发明精神的基础上所做的这些修改或改进,均属于本发明要求保护的范围。

Claims (10)

1.一种耐高温材料,其特征在于,包括由耐高温材料坯体制备而成,所述耐高温材料坯体包括以下原料制备而成:
Figure FDA0002792323810000011
所述添加剂为金尾矿、钼尾矿和粘土;所述金尾矿、所述钼尾矿和所述粘土的质量比为(1-5):(1-5):(3-15);所述结合剂包括硅灰。
2.根据权利要求1所述的耐高温材料,其特征在于,所述结合剂的粒径为0.010mm以下,所述矾土基均质料的粒径为5mm以下,所述废匣钵的粒径为2mm以下,所述添加剂的粒径为0.088mm以下。
3.根据权利要求1所述的耐高温材料,其特征在于,所述矾土基均质料为矾土基耐火M60均质料;和/或,所述废匣钵为发泡陶瓷用后的废匣钵;和/或,所述添加剂为屿耳崖金尾矿、平泉钼尾矿和宽城粘土;和/或,所述耐高温材料的表面包覆釉层;和/或,所述耐高温材料的最高使用温度为1300℃。
4.根据权利要求3所述的耐高温材料,其特征在于,所述釉层为Li2O-MgO-Al2O3-SiO2系低膨胀釉。
5.一种如权利要求1所述的耐高温材料的制备方法,其特征在于,包括如下步骤:
步骤1),配料:按比例称取以下原料:矾土基均质料、废匣钵、添加剂和结合剂;
步骤2),成型:将步骤1)中所述原料在搅拌机中搅拌混合,然后加工成型,得耐高温材料坯体;
步骤3),施釉:将步骤2)中所述耐高温材料坯体进行干燥,然后在表面优选为工作面施釉,并烘干,即得耐高温材料前体;
步骤4),烧成:将步骤3)中所述耐高温材料前体在窑炉中进行烧成,即得。
6.根据权利要求5所述的耐高温材料的制备方法,其特征在于,步骤4)中,所述烧成的温度控制方式为:
由初始温度升温至600℃,控制升温速度为10-50℃/h,
在600℃下,保温1-8h,
600-1380℃,控制升温速度为10-60℃/h,
在1230-1380℃下,保温1-12h。
7.根据权利要求5所述的耐高温材料的制备方法,其特征在于,步骤3)中,所述烘干的条件:在110℃下保温1-12h。
8.根据权利要求5-7中任一项所述的耐高温材料的制备方法,其特征在于,步骤1)前还包括,将所述矾土基均质料制成5mm以下的颗粒,将所述废匣钵制成粒径为2mm以下,将所述添加剂制成粒径不大于0.088mm的细粉。
9.根据权利要求5-7中任一项所述的耐高温材料的制备方法,其特征在于,步骤2)中,所述加工成型包括机压成型或振动成型。
10.根据权利要求9所述的耐高温材料的制备方法,其特征在于,步骤2)中,压制后的密度为2.05-2.55g/cm3
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