CN110282989A - 旋转管及其制备方法 - Google Patents

旋转管及其制备方法 Download PDF

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CN110282989A
CN110282989A CN201910687599.3A CN201910687599A CN110282989A CN 110282989 A CN110282989 A CN 110282989A CN 201910687599 A CN201910687599 A CN 201910687599A CN 110282989 A CN110282989 A CN 110282989A
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刘持强
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Abstract

本发明属于旋转管技术领域，具体的涉及一种旋转管及其制备方法。以质量分数计，原料组成如下：废电熔锆刚玉砖30‑50％，莫来石20‑30％，硅线石5‑10％，高岭土5‑10％，纳米氧化铝1‑20％，烧结剂0.3‑5％。本发明所述的旋转管，气孔率低，体积密度大，机械耐压强度大，耐火温度高，使用固废作为原料，节约资源，制备的旋转管使用寿命长；所述的制备方法大大降低烧成温度，节约了能源消耗，在超高温燃烧时，制品的烧成温度每降低200℃，可节省百分之五十的燃料。

Description

旋转管及其制备方法
技术领域
本发明属于旋转管技术领域，具体的涉及一种旋转管及其制备方法。
背景技术
旋转管是适用于玻璃真空器件、光电管、太阳能反光管、药用包装玻璃管等玻璃拉管窑炉的高档耐火材料，它作为玻璃拉管窑炉的关键功能性材料，要求表面加工十分光洁，杂质、溶洞、针眼气孔极少，只有这样才能保证拉制出的玻璃管具有良好的质量。
对于目前现有的焦宝石质旋转管，由于焦宝石自身的缺陷，使得旋转管的使用寿命很短，大大影响了拉制玻璃管的产量和质量，材料结构不密实，不耐玻璃液侵蚀。
同时，旋转管作为高温场合下应用的耐火材料，其自身在高温下的强度、耐冲刷度、抗热震、热侵蚀也显得尤为重要，旋转管必须能承受此温度并且具有较高的强度、耐侵蚀和耐冲刷性能，不然会发生变形，影响拉管的质量，旋转管自身也会损坏。
旋转管的结构较为细长，成型工艺繁琐，且现有的旋转管存在密度低，气孔率高，质量不稳定，使用寿命短等缺陷，因此，亟待开发一种新型旋转管。
发明内容
本发明的目的是克服现有技术的不足，提供一种旋转管及其制备方法。该旋转管气孔率低，体积密度大，机械耐压强度大，耐火温度高，耐冲刷及抗热震性能优异，使用固废作为原料，节约资源，制备的旋转管使用寿命长。
本发明所述的旋转管，以质量分数计，原料组成如下：
其中：
废电熔锆刚玉砖，以质量分数计，化学组成如下：
以重量分数计，废电熔锆刚玉砖粒径配比为：
0.045-1mm 40-80％
1-2mm 20-60％。
莫来石为75#莫来石。
75#莫来石体积密度为≥2.7g/cm3，化学组成如下：
Al2O3 ≥75％
SiO2 ≤23.0％
Fe2O3 ≤0.5％。
以重量分数计，莫来石粒径配比为：
＜0.045 40-70％
0.045-1mm 20-50％
1-2mm 10-40％。
硅线石为55#硅线石。
55#硅线石体积密度为≥2.3g/cm3，化学组成如下：
Al2O3 ≥55％
SiO2 ≤42％
Fe2O3 ≤1.5％。
烧结剂由以下重量分数的原料组成：
本发明所述的旋转管的结构与CN1087682C专利中记载的旋转管的结构相同。
本发明所述的旋转体的制备方法如下：
在成型模具中封装好成型料后放入等静压成型腔中，从注液口施加液压，当压力达到130Mpa时，保压1分钟。卸压后，取出成型坯体，直接入窑烧成，烧成温度为1480-1520℃，冷却后得制品。
优选的烧成温度为1500℃。
入窑烧成的烧成曲线分为三段，第一段是以15℃/h的速率从0℃升温到900℃，第二段是以20℃/h的速率从900℃升温到1300℃，第三段是以10℃的速率从1300℃升温到1480-1520℃，保温4小时。
相比以前的入窑烧成过程的烧成曲线，减少了以5℃/h的速率从1500℃升温到1700℃，并在1700℃下保温8h的过程。
两种烧成过程相比较而言，本发明所述的旋转管的烧成时间减少44h，从所用天然气燃料而言，从1500℃升温到1700℃的烧成过程比第一段至第三段烧成所用的总燃料多14-15％。
本发明所述的烧成方法比原有烧成方法节省天然气燃料53.8％。
本发明所述的旋转管，以废电熔锆刚玉砖(固废)作为反应原料，大大降低生产成本，废电熔锆刚玉砖中含有三分之一的ZrO2，氧化锆属于惰性耐高温材料，能够很好的抗玻璃液的侵蚀，提高了旋转管的化学稳定性，大大延长了旋转管的使用寿命。
且氧化锆能够与烧结剂中的氧化钇相互配合，克服旋转管脆性大的缺点，提高旋转管的耐腐蚀性。
莫来石作为骨料，提高了旋转管的抗热震性(耐极冷极热性能)。
高岭土属于三斜晶系，作为形成莫来石相的晶种，不断建立莫来石晶体的增殖中心，引起新晶体的发育，硅线石与莫来石在烧结剂中单质Al和Si的作用下，降低莫来石相形成的活化能，在高温下促进莫来石相的提前形成。
烧结剂中的氧化镧和氧化钇具有降低烧成温度，提高致密度和强度的作用，氧化镧的加入易于烧结，提高了旋转管的致密化程度，氧化钇起到使旋转管化学性质稳定的作用，提高旋转管的耐腐蚀性。
氧化钇稳定氧化锆可以克服陶瓷脆性大的缺点，化学性质稳定，使之具有良好的耐腐蚀性。
本发明与现有技术相比，具有以下有益效果：
本发明所述的旋转管，气孔率低，体积密度大，机械耐压强度大，耐火温度高，使用固废作为原料，节约资源，制备的旋转管使用寿命长；所述的制备方法大大降低烧成温度，节约了能源消耗，在超高温燃烧时，制品的烧成温度每降低200℃，可节省百分之五十的燃料。
具体实施方式
以下结合实施例对本发明作进一步描述。
实施例1
本发明所述的旋转管，以质量分数计，原料组成如下：
其中：
废电熔锆刚玉砖(固废)，以质量分数计，化学组成如下：
以重量分数计，废电熔锆刚玉砖(固废)粒径配比为：
0.045-1mm 60％
1-2mm 40％。
莫来石为75#莫来石。
75#莫来石体积密度为2.9g/cm3，化学组成如下：
Al2O3 78％
SiO2 21.5％
Fe2O3 0.5％。
以重量分数计，莫来石粒径配比为：
＜0.045 70％
0.045-1mm 20％
1-2mm 10％。
硅线石为55#硅线石。
55#硅线石体积密度为2.7g/cm3，化学组成如下：
Al2O3 58.5％
SiO2 40％
Fe2O3 1.5％。
烧结剂由以下重量分数的原料组成：
本发明所述的旋转体的制备方法如下：
在成型模具中封装好成型料后放入等静压成型腔中，从注液口施加液压，当压力达到130Mpa时，保压1分钟。卸压后，取出成型坯体，直接入窑烧成，烧成温度为1480℃，冷却后得制品。
入窑烧成的烧成曲线分为三段，第一段是以15℃/h的速率从0℃升温到900℃，第二段是以20℃/h的速率从900℃升温到1300℃，第三段是以10℃的速率从1300℃升温到1480℃，保温4小时。
实施例2
本发明所述的旋转管，以质量分数计，原料组成如下：
其中：
废电熔锆刚玉砖(固废)，以质量分数计，化学组成如下：
以重量分数计，废电熔锆刚玉砖(固废)粒径配比为：
0.045-1mm 50％
1-2mm 50％。
莫来石为75#莫来石。
75#莫来石体积密度为2.9g/cm3，化学组成如下：
Al2O3 78％
SiO2 21.5％
Fe2O3 0.5％。
以重量分数计，莫来石粒径配比为：
＜0.045 55％
0.045-1mm 30％
1-2mm 15％。
硅线石为55#硅线石。
55#硅线石体积密度为2.7g/cm3，化学组成如下：
Al2O3 58.5％
SiO2 40％
Fe2O3 1.5％。
烧结剂由以下重量分数的原料组成：
本发明所述的旋转体的制备方法如下：
在成型模具中封装好成型料后放入等静压成型腔中，从注液口施加液压，当压力达到130Mpa时，保压1分钟。卸压后，取出成型坯体，直接入窑烧成，烧成温度为1500℃，冷却后得制品。
入窑烧成的烧成曲线分为三段，第一段是以15℃/h的速率从0℃升温到900℃，第二段是以20℃/h的速率从900℃升温到1300℃，第三段是以10℃的速率从1300℃升温到1500℃，保温4小时。
实施例3
本发明所述的旋转管，以质量分数计，原料组成如下：
其中：
废电熔锆刚玉砖(固废)，以质量分数计，化学组成如下：
以重量分数计，废电熔锆刚玉砖(固废)粒径配比为：
0.045-1mm 80％
1-2mm 20％。
莫来石为75#莫来石。
75#莫来石体积密度为2.9g/cm3，化学组成如下：
Al2O3 78％
SiO2 21.5％
Fe2O3 0.5％。
以重量分数计，莫来石粒径配比为：
＜0.045 40％
0.045-1mm 20％
1-2mm 40％。
硅线石为55#硅线石。
55#硅线石体积密度为2.7g/cm3，化学组成如下：
Al2O3 58.5％
SiO2 40％
Fe2O3 1.5％。
烧结剂由以下重量分数的原料组成：
本发明所述的旋转体的制备方法如下：
在成型模具中封装好成型料后放入等静压成型腔中，从注液口施加液压，当压力达到130Mpa时，保压1分钟。卸压后，取出成型坯体，直接入窑烧成，烧成温度为1520℃，冷却后得制品。
入窑烧成的烧成曲线分为三段，第一段是以15℃/h的速率从0℃升温到900℃，第二段是以20℃/h的速率从900℃升温到1300℃，第三段是以10℃的速率从1300℃升温到1520℃，保温4小时。
对实施例1-3制备的旋转管进行性能测试，结果如表1所示。
表1实施例1-3制备的旋转管测试结果
参数 实施例1 实施例2 实施例3
显气孔率/％ 0.31 0.27 0.32
体积密度/g/cm<sup>3</sup> 3.0 3.1 3.15
耐压强度/Mpa 110 121 98
抗热震1100℃水冷/次 11 13 10
相比现有的焦宝石质旋转管，1100℃水冷只有5-6次，本申请所述的旋转管的抗热震性能大大提高。

Claims (9)

1.一种旋转管，其特征在于：以质量分数计，原料组成如下：
2.根据权利要求1所述的旋转管，其特征在于：废电熔锆刚玉砖以质量分数计，化学组成如下：
Fe2O3+TiO2+CaO+MgO+Na2O+K2O+B2O3≤2.5％。
3.根据权利要求1所述的旋转管，其特征在于：以重量分数计，废电熔锆刚玉砖，粒径配比为：
0.045-1mm 40-80％
1-2mm 20-60％。
4.根据权利要求1所述的旋转管，其特征在于：莫来石为75#莫来石，75#莫来石体积密度为≥2.7g/cm3，化学组成如下：
Al2O3 ≥75％
SiO2 ≤23.0％
Fe2O3 ≤0.5％。
5.根据权利要求1所述的旋转管，其特征在于：以重量分数计，莫来石粒径配比为：
＜0.045 40-70％
0.045-1mm 20-50％
1-2mm 10-40％。
6.根据权利要求1所述的旋转管，其特征在于：硅线石为55#硅线石，55#硅线石体积密度为≥2.3g/cm3，化学组成如下：
Al2O3 ≥55％
SiO2 ≤42％
Fe2O3 ≤1.5％。
7.根据权利要求1所述的旋转管，其特征在于：烧结剂由以下重量分数的原料组成：
8.一种权利要求1所述的旋转管的制备方法，其特征在于：在成型模具中封装好成型料后放入等静压成型腔中，从注液口施加液压，当压力达到130Mpa时，保压1分钟。卸压后，取出成型坯体，直接入窑烧成，烧成温度为1480-1520℃，冷却后得制品。
9.根据权利要求8所述的旋转管的制备方法，其特征在于：入窑烧成的烧成曲线分为三段，第一段是以15℃/h的速率从0℃升温到900℃，第二段是以20℃/h的速率从900℃升温到1300℃，第三段是以10℃的速率从1300℃升温到1480-1520℃，保温4小时。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114988894A (zh) * 2022-06-07 2022-09-02 湖南旗滨医药材料科技有限公司 一种轻质抗热震莫来石堇青石质旋转管及其制备方法
CN115718106A (zh) * 2022-11-25 2023-02-28 湖南旗滨医药材料科技有限公司 一种旋转管自动化探伤装置、方法及其应用

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114988894A (zh) * 2022-06-07 2022-09-02 湖南旗滨医药材料科技有限公司 一种轻质抗热震莫来石堇青石质旋转管及其制备方法
CN115718106A (zh) * 2022-11-25 2023-02-28 湖南旗滨医药材料科技有限公司 一种旋转管自动化探伤装置、方法及其应用

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