CN113149702A - 一种高强轻质保温砖 - Google Patents

一种高强轻质保温砖 Download PDF

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CN113149702A
CN113149702A CN202110346218.2A CN202110346218A CN113149702A CN 113149702 A CN113149702 A CN 113149702A CN 202110346218 A CN202110346218 A CN 202110346218A CN 113149702 A CN113149702 A CN 113149702A
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insulating brick
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陈岗
吴占强
钱庆
吴锐强
吴益平
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Jiangsu Greatwall Kiln & Furnace Project Co ltd
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Abstract

一种高强轻质保温砖，应用于回转窑等动态窑炉的保温炉衬，原料组份漂珠、沉珠、粘土、叶蜡石、硅灰和糊精粉结合剂组成，通过高温漂珠和沉珠的组配尤其是调控高温漂珠的量来控制砖体的密度，以粘土和叶蜡石尤其是叶蜡石的量来调节保温砖的强度，使砖体达到高强轻质性能，增加了炉衬基础的稳定性，达到了良好的保温节能要求。

Description

一种高强轻质保温砖
技术领域
本发明属高强轻质保温砖，应用于回转窑等动态窑炉的保温炉衬，用来隔绝窑炉内部热量向筒壁的传导，起到保护筒体和节能的作用。
背景技术
目前国内的窑炉特别是焚烧炉回转窑这种动态窑炉，其运行工况复杂：1.窑炉运行过程中停窑进行维修的频率较高；2.转窑的日产量在逐步增加，甚至超负荷运转，窑炉的使用状况不理想；3.随着产能的增加，设计的回转窑的规格尺寸越来越大，筒壁内径的增大，对窑炉内衬的结构稳定性的要求越来越高。这些实际情况加大了对回转窑内衬耐火材料的结构稳定的要求，而为了节能隔热，转窑的内衬砌筑采用了保温砖与致密耐火砖套砌的方法：以保温砖作为基础砌筑在筒壁上，然后在上面砌筑致密耐火砖。这种施工结构在窑炉高温运行中对作为基础的保温砖的结构强度和耐高温的稳定性要求很高。而市场上的保温砖都是以静态窑炉的工况来生产的，其强度远远达不到转窑的运行要求，所以必须开发出一种轻度高，耐高温和隔热效果良好的超高强度保温砖。
发明内容
本发明正是为了克服上述不足，提供一种高强轻质保温砖，是为增加炉衬基础的稳定性和保温节能要求开发的耐火制品。
具体是这样实施的：
一种高强轻质保温砖，其特征在于原料组份的质量百分比含量为：
漂珠 80目 15-25%
沉珠 70目 40-46%
粘土 <0.06mm 18-20%
叶蜡石 <0.05mm 7-14%
硅灰 <0.05mm 6-8%
以上述组份100%为基准，外加：
糊精粉结合剂 2-3%
所述保温砖的密度为1.2-1.5 g/cm3；
制备方法是将原料进行预处理，然后对原料分级并精确配料，并对原料进行检测，经过搅拌混合均匀后加入结合剂搅拌均匀，混合压制成型，坯体干燥后入窑烧成，待质检后包装发运至用户现场施工；
制备方法中，混合压制成型的压力为20-30吨，坯体干燥后烧成，烧成温度在1150℃-1200℃，保温5-6个小时。
本发明的有益效果是:
1、本发明通过加入高温漂珠和沉珠的组配尤其是调控高温漂珠的量来控制砖体的密度，达到轻质，以粘土和叶蜡石尤其是叶蜡石的量来调节保温砖的强度；
2、原料中加入有适量氧化硅微粉（硅灰），其粉体更轻，可让砖体的体积密度变小，可进一步提高强度；
3、以糊精粉做结合剂，作为淀粉，其烧结后易挥发，生成小气孔，成本低，经济且无毒无污染，无刺激性气味，另外，坯体在110℃干燥后保证砖坯的入窑强度，从而得到最终符合要求的产品。
4、本发明提供的该种高强轻质保温砖，增加了炉衬基础的稳定性，达到了良好的保温节能要求。
5、本发明高强轻质保温砖技术数据如下：
Figure DEST_PATH_IMAGE001
附图说明
图1为一个窑期后转窑拆除后超强轻质保温砖部位状态图。
具体实施方式
一种高强轻质保温砖，其特征在于原料组份的质量百分比含量为：
漂珠 80目 15-25%
沉珠 70目 40-46%
粘土 <0.06mm 18-20%
叶蜡石 <0.05mm 7-14%
硅灰 <0.05mm 6-8%
以上述组份100%为基准，外加：
糊精粉结合剂 2-3%
所述保温砖的密度为1.2-1.5 g/cm3；
制备方法是：将原料进行预处理，然后对原料分级并精确配料，并对原料进行检测，经过搅拌混合均匀后加入结合剂搅拌均匀，在压力20-30吨下混合压制成型，100℃下坯体干燥后入窑烧成，烧成温度在1150℃-1200℃，保温5-6个小时，冷却后对其进行性能检测，待质检合格后包装发运至用户现场施工。
市售的各原料性能如下：
Figure 795536DEST_PATH_IMAGE002
实施例1-3，保温砖密度设计为1.2 g/cm3。
原料组份配伍及性能指标如下：
Figure DEST_PATH_IMAGE003
实施例4-6，保温砖密度设计为1.5 g/cm3。
原料组份配伍及性能指标如下：
Figure 627488DEST_PATH_IMAGE004
以上两个规格的轻质保温砖通过加入不同比例的高温漂珠来控制它们的密度；通过烧结剂的加入量来调节保温砖的强度，从而得到最终产品。
通过在焚烧炉转窑的一个窑期的使用，这两种保温砖的使用效果良好：1.窑体在使用中没有超温现象（说明保温砖的隔热效果良好，结构强度高没有破损空鼓）；2.窑体内衬致密耐火砖没有出现露头与扭曲（保温砖的结构稳定）。在拆除后发现保温砖依旧牢固贴合在筒壁上，没有粉化现象。

Claims (5)

1.一种高强轻质保温砖，其特征在于原料组份的质量百分比含量为：
漂珠 80目 15-25%
沉珠 70目 40-46%
粘土 <0.06mm 18-20%
叶蜡石 <0.05mm 7-14%
硅灰 <0.05mm 6-8%
以上述组份100%为基准，外加：
糊精粉结合剂 2-3%
所述保温砖的密度为1.2-1.5 g/cm3；
制备方法是将原料进行预处理，然后对原料分级并精确配料，并对原料进行检测，经过搅拌混合均匀后加入结合剂搅拌均匀，混合压制成型，坯体干燥后入窑烧成。
2.根据权利要求1所述的一种高强轻质保温砖，其特征在于原料组份的质量百分比含量为：
漂珠 80目 22-25%
沉珠 70目 40-43%
粘土 <0.06mm 20%
叶蜡石 <0.05mm 7-9%
硅灰 <0.05mm 6-8%
以上述组份100%为基准，外加：
糊精粉结合剂 2-3%
所述保温砖的密度为1.2 g/cm3。
3.根据权利要求1所述的一种高强轻质保温砖，其特征在于原料组份的质量百分比含量为：
漂珠 80目 15-19%
沉珠 70目 43-46%
粘土 <0.06mm 18%
叶蜡石 <0.05mm 13-14%
硅灰 <0.05mm 7%
以上述组份100%为基准，外加：
糊精粉结合剂 2-3%
所述保温砖的密度为1.5 g/cm3。
4.根据权利要求1、2、3之一所述的一种高强轻质保温砖，其特征在于坯体在110℃干燥。
5.根据权利要求1、2、3之一所述的一种高强轻质保温砖，其特征在于制备方法中，混合压制成型的压力为20-30吨，坯体干燥后烧成，烧成温度在1150℃-1200℃，保温5-6个小时。
CN202110346218.2A 2021-03-31 2021-03-31 一种高强轻质保温砖 Withdrawn CN113149702A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114368980A (zh) * 2022-01-14 2022-04-19 山东锆铪新材料科技有限公司 轻质保温砖及其制备方法
CN115819098A (zh) * 2022-12-21 2023-03-21 焦作市金星耐火材料有限公司 一种隔热耐火砖及其制备方法

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CN1041648A (zh) * 1989-10-28 1990-04-25 江西省建材工业科研设计院 高强轻质稻壳灰保温砖及其制法
CN1102822A (zh) * 1994-08-19 1995-05-24 冶金工业部武汉冶金建筑研究所 粉煤灰轻质隔热耐火砖
CN103159428A (zh) * 2013-03-27 2013-06-19 武汉科技大学 一种稻壳灰基多孔材料及其制备方法
CN110723978A (zh) * 2019-10-30 2020-01-24 浙江自立高温科技股份有限公司 用于钢包永久层的微孔莫来石砖及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1041648A (zh) * 1989-10-28 1990-04-25 江西省建材工业科研设计院 高强轻质稻壳灰保温砖及其制法
CN1102822A (zh) * 1994-08-19 1995-05-24 冶金工业部武汉冶金建筑研究所 粉煤灰轻质隔热耐火砖
CN103159428A (zh) * 2013-03-27 2013-06-19 武汉科技大学 一种稻壳灰基多孔材料及其制备方法
CN110723978A (zh) * 2019-10-30 2020-01-24 浙江自立高温科技股份有限公司 用于钢包永久层的微孔莫来石砖及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114368980A (zh) * 2022-01-14 2022-04-19 山东锆铪新材料科技有限公司 轻质保温砖及其制备方法
CN115819098A (zh) * 2022-12-21 2023-03-21 焦作市金星耐火材料有限公司 一种隔热耐火砖及其制备方法

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Application publication date: 20210723