CN108083829A - 一种高韧性保温浇注料 - Google Patents

一种高韧性保温浇注料 Download PDF

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CN108083829A
CN108083829A CN201810114917.2A CN201810114917A CN108083829A CN 108083829 A CN108083829 A CN 108083829A CN 201810114917 A CN201810114917 A CN 201810114917A CN 108083829 A CN108083829 A CN 108083829A
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丁丰收
晁尚奎
李理想
李旭柯
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Zhengzhou Ruiwo New Material Co ltd
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Abstract

本发明公开了一种高韧性保温浇注料，是由原料焦宝石、莫来石、氧化铝空心球、硅线石粉、蓝晶石粉、电熔莫来石粉、高铝收尘粉、活性氧化铝粉、硅微粉、纯铝酸钙水泥、三聚磷酸钠、六偏磷酸钠按一定重量份配制而成。本发明配制的成品浇注料中，采用梯级搭配的焦宝石颗粒料和氧化铝空心球共同作用，降低了产品的体积密度；而莫来石颗粒、硅线石粉、高铝收尘粉和活性氧化铝粉的共同作用可使得产品具有较高的强度和优良的热震稳定性；电熔莫来石微粉和蓝晶石粉可改善产品的高温线变化率；经工业试用，本发明配制的浇注料能够满足高炉送风装置、热风管道联络口、铁水罐、钢包安全层等类似部位衬体的生产需求，达到了本申请人研发团队的设计目标。

Description

一种高韧性保温浇注料
技术领域
本发明涉及耐火材料，尤其是涉及一种高韧性保温浇注料。
背景技术
在高炉送风装置、热风管道联络口，铁水罐及钢包的安全层等部位用的衬体材料，一般要求所用的浇注料具有隔热保温和高强度的双重功能。但是正常的耐火浇注料设计时，要取得很好的隔热保温功能就要降低材料密度，这样材料的强度也自然随之降低；如果以提高密度来提高材料的强度，则提高密度后的材料导热性就会随之提高，而隔热保温功能则要降低。由于这两个功能的相互矛盾，在一种浇注料中既要求具有很好的保温性同时又要求具有较高的强度，已成为耐材行业中的技术难题，而采用现有的浇注料，由于不能两种功能兼具，所以使用寿命较短，增加了维修次数和停炉时间，设备能耗较高。鉴于高炉送风装置、热风管道联络口，铁水罐及钢包的安全层等高温装置在生产中对浇注料的实际要求，设计开发一种同时具有高保温性和高强度的耐火材料则具有非常重要的意义。
发明内容
本发明的目的在于提供一种高强度和高保温性兼具的高韧性保温浇注料，以满足高炉送风装置、热风管道联络口，铁水罐及钢包的安全层等部位衬体的生产要求。
为实现上述目的，本发明可采取下述技术方案：
本发明所述的高韧性保温浇注料，是由原料焦宝石、莫来石、氧化铝空心球、硅线石粉、蓝晶石粉、电熔莫来石粉、高铝收尘粉、活性氧化铝粉、硅微粉、纯铝酸钙水泥、三聚磷酸钠、六偏磷酸钠按下述重量份配比配制而成：
粒度1~8mm的焦宝石颗粒料40~60份，
粒度0.1~1mm的莫来石颗粒料8~12份，
粒度1~3mm的氧化铝空心球颗粒料4~10份，
200目硅线石粉5~10份，
80目蓝晶石粉3～6份，
320目电熔莫来石微粉3~8份，
高铝收尘粉1～3份，
活性氧化铝粉5~10份，
1μ硅微粉2~5份，
纯铝酸钙水泥3~8份，
三聚磷酸钠0.1～0.2份，
六偏磷酸钠0.1～0.2份。
为保证浇注料的性能要求，所用焦宝石颗粒料中，粒度5~8mm的焦宝石颗粒料 20~30份，粒度3~5mm的焦宝石颗粒料15~20份，粒度1~3mm的莫来石颗粒料5~10份。
本发明所用的高铝收尘粉中，Al2O3≥88%， Fe2O3≤1.5%。
其他原料的技术指标如下：
焦宝石：Al2O3=45～50%，Fe2O3≤2.0%，体密2.5g/cm3；
莫来石：Al2O3=70～71%，Fe2O3≤1.0%；
氧化铝空心球：Al2O3≥99%，体密0.6～0.8g/cm3；
硅线石：Al2O3≥52%，Fe2O3≤1.5%；
蓝晶石：Al2O3≥55%，Fe2O3≤1.5%；
活性氧化铝粉：Al2O3≥99%；
硅微粉：SiO2≥95%。
将上述所有原料按比例称量后，放入强力搅拌机中搅拌混合，15分钟后搅拌结束，计量装袋、封口后发至现场。
现场使用时，按搅拌机容量称取该浇注料，按浇注料总重量的7~8%加水搅拌均匀后输送至施工胎膜内，400℃烘烤后即可投入使用。
本发明的优点在于：配制的成品浇注料中，采用梯级搭配的焦宝石颗粒料和氧化铝空心球共同作用，降低了产品的体积密度；而莫来石颗粒、硅线石粉、高铝收尘粉和活性氧化铝粉的共同作用可使得产品具有较高的强度和优良的热震稳定性，特别是500目的高铝收尘粉（磨88块料磨粉）体密高，粒度细，能够充分填充缝隙，提高浇注料强度；电熔莫来石微粉和蓝晶石粉可改善产品的高温线变化率；本发明浇注料原料配比科学，使得成品具有保温效果好、强度高、抗热震性能好、线变化率小等优点。经工业试用，本发明配制的浇注料能够满足高炉送风装置、热风管道联络口，铁水罐、钢包的安全层等类似部位衬体的耐火材料需求，达到了本申请人研发团队的设计目标。
本发明浇注料在使用时，可以根据设备的具体部位，各原料组分在本发明公开的范围内做适当调整，以期取得更好的使用效果。
将本发明浇注料与现有两种常用浇注料进行对比，其技术参数对比见下表。
注：现有浇注料1多用于施工浇注钢包安全层。现有浇注料2多用于施工浇注铁水罐安全层。
具体实施方式
本发明所述的高韧性保温浇注料，是由原料焦宝石、莫来石、氧化铝空心球、硅线石粉、蓝晶石粉、电熔莫来石粉、高铝收尘粉、活性氧化铝粉、硅微粉、纯铝酸钙水泥、三聚磷酸钠、六偏磷酸钠按下述重量份配比配制而成：
粒度1~8mm的焦宝石颗粒料40~60份，
粒度0.1~1mm的莫来石颗粒料8~12份，
粒度1~3mm的氧化铝空心球颗粒料4~10份，
200目硅线石粉5~10份，
80目蓝晶石粉3～6份，
320目电熔莫来石微粉3~8份，
高铝收尘粉1～3份，
活性氧化铝粉5~10份，
1μ（约8000目）硅微粉2~5份，
纯铝酸钙水泥3~8份，
三聚磷酸钠0.1～0.2份，
六偏磷酸钠0.1～0.2份。
所用的焦宝石颗粒料中，粒度5~8mm的焦宝石颗粒料为20~30份，粒度3~5mm的焦宝石颗粒料15~20份，粒度1~3mm的莫来石颗粒料5~10份。
实施例1
配制高炉吹管和热风管道用浇注料，其所用原料的重量百分配比为：
粒度1~8mm的焦宝石颗粒50%，其中的粒度级配为：粒度5~8mm的颗粒料20%，3mm＜粒度＜5mm的颗粒料20%，粒度1~3mm的颗粒料10%；
粒度0.1~1mm的莫来石颗粒8%；
粒度1~3mm的氧化铝空心球颗粒10%；
80目蓝晶石粉5%；
320目电熔莫来石微粉5%；
高铝收尘粉3%；
活性氧化铝粉7%；
1μ硅微粉5%；
纯铝酸钙水泥7%；
外加剂：原料总量0.1%的三聚磷酸钠和0.1%的六偏磷酸钠。
将上述原料搅拌均匀形成浇注料，施工时加适量水浇注高炉吹管衬体，其使用寿命大于12个月（原浇注料需要6~8个月更换一次，现在可稳定在12个月）；浇注热风管道内衬（特别在弯口易损部位），其使用寿命长达14个月（原浇注料需要8~9个月更换一次，现在可稳定在12~14个月）。
实施例2
配制钢包工作层用浇注料，其所用原料的重量百分配比为：
粒度1~8mm的焦宝石颗粒60%，其中的粒度级配为：粒度5~8mm的颗粒料20%，3mm＜粒度＜5mm的颗粒料20%，粒度1~3mm的颗粒料20%；
粒度0.1~1mm的莫来石颗粒8%；
粒度1~3mm的氧化铝空心球颗粒4%；
80目蓝晶石粉3%；
320目电熔莫来石微粉5%；
高铝收尘粉3%；
活性氧化铝粉5%；
1μ硅微粉5%；
纯铝酸钙水泥7%；
外加剂：原料总量0.2%的三聚磷酸钠和0.2%的六偏磷酸钠。
将上述原料搅拌均匀形成浇注料，施工时加适量水浇注钢包工作层，其使用寿命为14个月。

Claims (3)

1.一种高韧性保温浇注料，其特征在于：是由原料焦宝石、莫来石、氧化铝空心球、硅线石粉、蓝晶石粉、电熔莫来石粉、高铝收尘粉、活性氧化铝粉、硅微粉、纯铝酸钙水泥、三聚磷酸钠、六偏磷酸钠按下述重量份配比配制而成：
粒度1~8mm的焦宝石颗粒料40~60份，
粒度0.1~1mm的莫来石颗粒料8~12份，
粒度1~3mm的氧化铝空心球颗粒料4~10份，
200目硅线石粉5~10份，
80目蓝晶石粉3～6份，
320目电熔莫来石微粉3~8份，
高铝收尘粉1～3份，
活性氧化铝粉5~10份，
1μ硅微粉2~5份，
纯铝酸钙水泥3~8份，
三聚磷酸钠0.1～0.2份，
六偏磷酸钠0.1～0.2份。
2.根据权利要求1所述的高韧性保温浇注料，其特征在于：所述焦宝石颗粒料中，粒度5~8mm的焦宝石颗粒料 20~30份，粒度3~5mm的焦宝石颗粒料15~20份，粒度1~3mm的莫来石颗粒料5~10份。
3.根据权利要求1所述的高韧性保温浇注料，其特征在于：所述高铝收尘粉中Al2O3≥88%，Fe2O3≤1.5%。
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