CN105948718A - 一种低气孔方镁石-复合尖晶石砖及其制备方法 - Google Patents

一种低气孔方镁石-复合尖晶石砖及其制备方法 Download PDF

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CN105948718A
CN105948718A CN201610271707.5A CN201610271707A CN105948718A CN 105948718 A CN105948718 A CN 105948718A CN 201610271707 A CN201610271707 A CN 201610271707A CN 105948718 A CN105948718 A CN 105948718A
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袁林
郑中阳
李全有
郑建立
曹伟
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ZHENGZHOU RUITAI REFRACTORY MATERIALS TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种低气孔方镁石‑复合尖晶石砖及其制备方法，由以下质量份配比的原料制成：粒度3‑5mm的电熔镁砂 15‑20份、粒度1‑3mm的电熔镁砂 35‑40份、粒度0.088‑1mm的电熔镁砂 10‑15份、刚玉微粉 3‑5份、铁磷粉1‑3份、粒度d95<0.088mm的电熔镁砂粉20‑25份、氯化镁溶液1‑2份，纸浆溶液1‑2份。本发明的制备方法为经配料、混合、压制、干燥后，1510‑1520℃烧制6h，即得成品。本发明具有低气孔、抗侵蚀、抗热震的性能、优良的挂窑皮性能、低导热系数；此产品用于协同处理固体垃圾水泥回转窑水泥窑煅烧带，提高此部位材料使用寿命，降低其筒体温度，达到节能减排的作用。

Description

一种低气孔方镁石 - 复合尖晶石砖及其制备方法
技术领域
本发明属于耐火材料技术领域，具体涉及一种低气孔方镁石-复合尖晶石砖及其制备方法。
背景技术
目前，城市生活垃圾处理主要填埋、堆肥、焚烧和气化四种处理方式。其中，水泥回转窑协同处理生活垃圾是一种环保、经济及有效的气化技术，把工业和城市生活垃圾的处理和水泥生产过程有效结合起来，既处理了工业和城市生活垃圾，又可以部分解决水泥工业对能源的巨大需求问题，实现了废旧物质的资源化和再循环使用。
水泥窑协同处理工业和城市垃圾已经成为趋势。水泥窑中耐火材料的研究是水泥窑协同处理工业和城市垃圾的关键技术。目前，迫切需要一种抗侵蚀性更好的水泥窑煅烧带用耐火材料。同时，为延长使用寿命，协同处理固体垃圾水泥窑回转窑煅烧带需要具有优异的抗侵蚀性、抗热震性能、环境气氛、化学成分不断变化的耐高温性能。
发明内容
为了解决上述技术问题，本发明要解决的技术问题是提供一种低气孔方镁石-复合尖晶石砖及其制备方法，具有优异的抗侵蚀性、抗热震性能、环境气氛、化学成分不断变化的耐高温性能等优点。
为实现上述目的，本发明采用以下技术方案：一种低气孔方镁石-复合尖晶石砖，由骨料、粉料和结合剂制成，以质量份配比计，其制备原料如下：
骨料：粒度3-5mm的电熔镁砂 15-20份，粒度1-3mm的电熔镁砂 35-40份，粒度0.088mm-1的电熔镁砂 10-15份；
粉料：粒度d95<0.088mm的电熔镁砂粉 20-25份，刚玉微粉 3-5份，铁磷粉1-3份；
结合剂：氯化镁溶液1-2份，碱性纸浆废液1-2份。
以质量百分含量计，所述三种粒度规格的电熔镁砂中的MgO含量≥97wt%，所述刚玉微粉中的Al2O3含量≥98 wt%，所述铁磷粉中的Fe2O3含量≥99 wt%，所述电熔镁砂粉中的MgO含量≥97wt%。
氯化镁溶液的密度为1.23-1.25g/cm3，碱性纸浆废液的密度为1.12-1.16g/cm3。
制备方法：低气孔方镁石-复合尖晶石砖各原料按以上配比进行称重，接着依次进行配料、混合、压制、干燥作业，最后烧制成型即得低气孔方镁石-复合尖晶石砖成品；其中，烧制工序的温度为1510-1520℃，烧制的时间为6h。
本发明与现有技术相比具有以下优点：本发明涉及的各种原料均为市售原料，刚玉微粉、铁磷粉、电熔镁砂粉在高温下原位生成铁铝尖晶石、镁铝尖晶石、镁铁尖晶石；三种尖晶石具有良好的抗侵蚀性能，抗热震性；氯化镁溶液，在低温下与电熔镁砂反应，有利于提高半成品干燥后的强度，纸浆废液，提高半成品的塑性。
本发明采用电熔镁砂、刚玉微粉和铁磷粉为主要原料，使材料中原位生成复合尖晶石，改变材料传统尖晶石引入的方式，经过高温烧结后此产品具有耐高温、抗侵蚀、抗热震的性能、低导热系数；此产品用于协同处理固体垃圾水泥窑煅烧带，提高此部位材料使用寿命，可降低其筒体温度，达到节能减排的作用。
具体实施方式
下面结合具体实施例对本发明作进一步说明，但不限定本发明的保护范围。
以下实施例中，原料规格：以质量百分含量计，三种粒度规格的电熔镁砂中MgO≥97wt%；刚玉微粉中Al2O3≥98 wt%；铁磷粉中Fe2O3≥99wt%，电熔镁砂粉中的MgO含量≥97wt%；氯化镁溶液的密度为1.23-1.25g/cm3，纸浆废液的密度为1.16g/cm3。
实施例 1 ：
本实施例中的低气孔方镁石-复合尖晶石砖包括下述质量份的原料，以质量份配比计：
骨料：粒度3-5mm的电熔镁砂18份，粒度1-3mm电熔镁砂38份，粒度0.088mm-1的电熔镁砂15份；
粉料：粒度d95<0.088mm的电熔镁砂粉25份，刚玉微粉3份，铁磷粉1份；
结合剂：氯化镁溶液1.5份，纸浆废液1.5份。
制备方法：
按以上配比称量各原料，接着依次进行配料、混合、压制、干燥作业，最后经1510℃烧制6h后烧成，即得低气孔方镁石-复合尖晶石砖成品，制得方镁石-复合尖晶石砖的显气孔率为13%，荷重软化温度T0.6>1700℃，热震稳定性1100℃水冷≥10次，导热系数为2.60W/(m·K）。
实施例 2 ：
本实施例中的低气孔方镁石-复合尖晶石砖包括下述质量份的原料，以质量份配比计：
骨料：粒度3-5mm的电熔镁砂20份，粒度1-3mm电熔镁砂35份，粒度0.088-1mm的电熔镁砂13份；
粉料：粒度d95<0.088mm的电熔镁砂粉30份，刚玉微粉3份，铁磷粉1.5份；
结合剂：氯化镁溶液1.5份，纸浆废液1.5份。
制备方法：
按以上配比称量各原料，接着依次进行配料、混合、压制、干燥作业，最后经1510℃烧制6h后烧成，即得低气孔方镁石-复合尖晶石砖成品，制得方镁石-复合尖晶石砖的显气孔率14%，荷重软化温度T0.6>1700℃，热震稳定性1100℃水冷≥11次，导热系数为2.62W/(m·K）。

Claims (4)

1.一种低气孔方镁石-复合尖晶石砖，其特征在于：由骨料、粉料和结合剂制成，以质量份配比计，其制备原料如下：
骨料：粒度3-5mm的电熔镁砂 15-20份，粒度1-3mm的电熔镁砂 35-40份，粒度0.088mm-1的电熔镁砂 10-15份；
粉料：粒度d95<0.088mm的电熔镁砂粉 20-25份，刚玉微粉 3-5份，铁磷粉1-3份；
结合剂：氯化镁溶液1-2份，碱性纸浆废液1-2份。
2.根据权利要求1所述的低气孔方镁石-复合尖晶石砖，其特征在于：以质量百分含量计，所述三种粒度规格的电熔镁砂中的MgO含量≥97wt%，所述刚玉微粉中的Al2O3含量≥98 wt%，所述铁磷粉中的Fe2O3含量≥99 wt%，所述电熔镁砂粉中的MgO含量≥97wt%。
3.根据权利要求1所述的低气孔方镁石-复合尖晶石砖，其特征在于：氯化镁溶液的密度为1.23-1.25g/cm3，碱性纸浆废液的密度为1.12-1.16g/cm3。
4.一种制备如权利要求1-3任一项所述的低气孔方镁石-复合尖晶石砖的方法，其特征在于：低气孔方镁石-复合尖晶石砖各原料按以上配比进行称重，接着依次进行配料、混合、压制、干燥作业，最后烧制成型即得低气孔方镁石-复合尖晶石砖成品；其中，烧制工序的温度为1510-1520℃，烧制的时间为6h。
CN201610271707.5A 2016-04-28 2016-04-28 一种低气孔方镁石-复合尖晶石砖及其制备方法 Pending CN105948718A (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110483020A (zh) * 2019-09-06 2019-11-22 郑州瑞泰耐火科技有限公司 一种高抗蚀镁铁尖晶石砖的制备方法
CN111960805A (zh) * 2020-07-28 2020-11-20 河南工业大学 一种抗热震镁质滑板砖及其生产方法
CN113354396A (zh) * 2021-06-15 2021-09-07 郑州海迈高温材料研究院有限公司 一种大型浮法玻璃熔窑蓄热室用方镁石砖的生产方法

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CN101066877A (zh) * 2007-06-07 2007-11-07 武汉科技大学 一种方镁石－铁铝尖晶石砖及其制备方法
CN103864433A (zh) * 2014-02-21 2014-06-18 武汉科技大学 水泥回转窑用方镁石-镁铝尖晶石耐火材料及其制备方法
CN105130471A (zh) * 2015-09-09 2015-12-09 郑州瑞泰耐火科技有限公司 一种镁铝铁尖晶石砖及其制备方法

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CN101066877A (zh) * 2007-06-07 2007-11-07 武汉科技大学 一种方镁石－铁铝尖晶石砖及其制备方法
CN103864433A (zh) * 2014-02-21 2014-06-18 武汉科技大学 水泥回转窑用方镁石-镁铝尖晶石耐火材料及其制备方法
CN105130471A (zh) * 2015-09-09 2015-12-09 郑州瑞泰耐火科技有限公司 一种镁铝铁尖晶石砖及其制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110483020A (zh) * 2019-09-06 2019-11-22 郑州瑞泰耐火科技有限公司 一种高抗蚀镁铁尖晶石砖的制备方法
CN111960805A (zh) * 2020-07-28 2020-11-20 河南工业大学 一种抗热震镁质滑板砖及其生产方法
CN113354396A (zh) * 2021-06-15 2021-09-07 郑州海迈高温材料研究院有限公司 一种大型浮法玻璃熔窑蓄热室用方镁石砖的生产方法

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Application publication date: 20160921