CN107663085B - 一种粘土质隔热耐火砖ng120-0.6及其制备方法 - Google Patents

一种粘土质隔热耐火砖ng120-0.6及其制备方法 Download PDF

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CN107663085B
CN107663085B CN201610606602.0A CN201610606602A CN107663085B CN 107663085 B CN107663085 B CN 107663085B CN 201610606602 A CN201610606602 A CN 201610606602A CN 107663085 B CN107663085 B CN 107663085B
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吕风雷
吕科利
苗承阳
段阳阳
赵更金
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Abstract

一种粘土质隔热耐火砖NG120‑0.6及其制备方法,涉及耐火材料制造技术领域,耐火砖由以下重量份的原料组成:闭孔珍珠岩20‑25份,膨胀珍珠岩10‑15份,硅石微粉5‑10份,陶土10‑15份,高铝超细粉10‑15份,莫来石粉15‑20份,水15‑19份。本发明的原料采用高耐火度的原料,并将原料按照一定比例经过配料、混料、制坯、烧制等制成粘土质隔热耐火砖NG120‑0.6,这种耐火砖生产成本低,常温耐压强度高,导热系数小,体积密度、加热温度和保温时间的永久线变化值在GB/T3994‑2013规定的范围值以内。

Description

一种粘土质隔热耐火砖NG120-0.6及其制备方法
技术领域
本发明涉及耐火材料制造技术领域,尤其涉及一种粘土质隔热耐火砖NG120-0.6及其制备方法。
背景技术
粘土质隔热耐火砖的生产工艺,国内普遍采用的方法是半干成型法,由于各生产商所用原料、材料的不同以及高温烧成温度和保温时间的差异,96%生产商的产品,加热永久线变化率指标均不合格(达不到GB/T3994-2013指标标准)。造成此种状况的主要原因是烧成温度未达到隔热砖的加热永久线变化温度或在此温度下的保温时间不足,而成品检测时要在规定的温度下保温12h,如果检测的温度和保温时间高于产品烧成温度和保温时间,就会出现隔热砖的加热永久线变化增大,特别是收缩率增大,从而达不到国标的技术指标的要求。
由此要想隔热砖的加热永久线变化率合格,就必须要提高隔热砖的烧成温度以及在该温度下的保温时间,才能在规定的高温烧成温度和保温条件下,不收缩或收缩值小,不变形,最终满足国标加热永久线变化率的指标要求。
发明内容
本发明为了解决上述的现有技术的缺点,提供一种粘土质隔热耐火砖NG120-0.6及其制备方法,该制备方法生产出的成品砖体积密度、加热温度和保温时间的永久线变化值能够在GB/T3994-2013规定的范围值以内,其常温耐压强度和导热系数指标能够达到国标标准。
本发明是这样实现的:一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩20-25份,膨胀珍珠岩 10-15份,硅石微粉 5-10份,陶土 10-15份,高铝超细粉 10-15份,莫来石粉 15-20份,水15-19份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5-6h,窑口温度为60℃,窑内温度为950℃-1000℃;(4)成品拣选装箱入库。
相对于现有技术,本发明的有益效果是:
本发明的原料采用高耐火度的原料,并将原料按照一定比例经过配料、混料、制坯、烧制等制成粘土质隔热耐火砖NG120-0.6,这种耐火砖生产成本低,常温耐压强度高,导热系数小,体积密度、加热温度和保温时间的永久线变化值在GB/T3994-2013规定的范围值以内。
具体实施方式
实施例1
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩20-25份,膨胀珍珠岩 10-15份,硅石微粉 5-10份,陶土 10-15份,高铝超细粉 10-15份,莫来石粉 15-20份,水15-19份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5-6h,窑口温度为60℃,窑内温度为950℃-1000℃;(4)成品拣选装箱入库。
实施例2
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩22-24份,膨胀珍珠岩 11-14份,硅石微粉 6-9份,陶土 12-14份,高铝超细粉 12-14份,莫来石粉16-19份,水16-18份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5-6h,窑口温度为60℃,窑内温度为960℃-990℃;(4)成品拣选装箱入库。
实施例3
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩23份,膨胀珍珠岩 13份,硅石微粉 7份,陶土 13份,高铝超细粉 13份,莫来石粉 17份,水17份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5.5h,窑口温度为60℃,窑内温度为970℃;(4)成品拣选装箱入库。
实施例4
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩20份,膨胀珍珠岩 10份,硅石微粉 5份,陶土 10份,高铝超细粉 10份,莫来石粉 15份,水15份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5h,窑口温度为60℃,窑内温度为950℃℃;(4)成品拣选装箱入库。
实施例5
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩25份,膨胀珍珠岩 15份,硅石微粉 10份,陶土 15份,高铝超细粉 15份,莫来石粉 20份,水19份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制6h,窑口温度为60℃,窑内温度为1000℃;(4)成品拣选装箱入库。
实施例6
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩22份,膨胀珍珠岩 11份,硅石微粉 6份,陶土 12份,高铝超细粉 12份,莫来石粉 16份,水16份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5h,窑口温度为60℃,窑内温度为960℃℃;(4)成品拣选装箱入库。
实施例7
一种粘土质隔热耐火砖NG120-0.6,由以下重量份的原料组成:闭孔珍珠岩24份,膨胀珍珠岩 14份,硅石微粉9份,陶土 14份,高铝超细粉 14份,莫来石粉 19份,水18份。
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制6h,窑口温度为60℃,窑内温度为990℃;(4)成品拣选装箱入库。
其他实施例
一种粘土质隔热耐火砖NG120-0.6,由表1所示的重量份的原料组成:
Figure DEST_PATH_IMAGE002
Figure DEST_PATH_IMAGE004
表1
所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
一种所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:
Figure DEST_PATH_IMAGE006
表2
按照表2中的各变量的实施例任意组合实施以下步骤:
(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5-6h,窑口温度为60℃,窑内温度为950℃-1000℃;(4)成品拣选装箱入库。
实验例
原料的理化指标如表3所示:
Figure DEST_PATH_IMAGE008
表3
经测定,实施例3、4、5、6、7的性能指标如表4所示:
Figure DEST_PATH_IMAGE010
表4。

Claims (2)

1.一种粘土质隔热耐火砖NG120-0.6,其特征在于:由以下重量份的原料组成:闭孔珍珠岩20-25份,膨胀珍珠岩 10-15份,硅石微粉 5-10份,陶土 10-15份,高铝超细粉 10-15份,莫来石粉 15-20份,水15-19份;所述的粘土质隔热耐火砖NG120-0.6的制备方法,包括如下步骤:(1)将原料按比例混合,输送到混合搅拌机,混合后进入到存料仓;(2)存料仓内混合好的原料进入到压砖机内成型,压砖机的压力为:80吨;(3)将压制成型的砖转运到隧道窑中烧制5-6h,窑口温度为60℃,窑内温度为950℃-1000℃;(4)成品拣选装箱入库。
2.根据权利要求1所述的粘土质隔热耐火砖NG120-0.6,其特征在于:所述的闭孔珍珠粉颗粒度小于1.2mm,膨胀珍珠岩颗粒度小于2mm,硅石微粉为600目,陶土为200目,高铝超细粉为600目,莫来石粉为120目。
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