CN109206129A - 一种莫来石复相高强耐磨可塑料及其制备方法 - Google Patents
一种莫来石复相高强耐磨可塑料及其制备方法 Download PDFInfo
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- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 57
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003595 mist Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052912 lithium silicate Inorganic materials 0.000 claims abstract description 10
- 229910020489 SiO3 Inorganic materials 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 9
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052727 yttrium Inorganic materials 0.000 claims 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000003303 reheating Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明一种莫来石复相高强耐磨可塑料及其制备方法。其技术方案是：先以30~70wt%的莫来石骨料、15~35wt%的莫来石细粉、10~20wt%的α‑氧化铝微粉和5~15wt%的硅微粉为原料，再外加所述原料0.15~0.25wt%的氧化钇和15~25wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。其中：氧化钇的粒径小于0.01mm，氧化钇的主要化学成分是：Y2O3≥99.9wt%；硅酸锂溶液中Li2SiO3的浓度≥60wt%。本发明具有节约资源、保护环境和降低成本的特点；所制备制品具有气孔率低、导热系数低、强度高和体积稳定性好的特点。
Description
技术领域
本发明属于高温耐磨耐火材料技术领域，具体涉及一种莫来石复相高强耐磨可塑料及其制备方法。
背景技术
高炉、热风炉、循环流化床、垃圾焚烧炉、催化裂化装置等热工设备的易磨损、 渗透及侵蚀部位，是高温设备的关键部位，尤其是异型或者结构复杂等部位，直接影响高温炉衬的使用寿命和高温设备的利用效率，耐火原料中，刚玉具有高熔点、高强度和高耐磨性的特点，莫来石材料具有热震稳定性好的特性，因此，采用无需支设模具，可直接施工的莫来石复相材料是理想的耐磨耐火可塑料之一。区别于浇注料，可塑料无需支设模具，直接采用涂抹、捣打的施工方法。
目前，常用的莫来石质可塑料依然是以传统的刚玉-莫来石为复相结合，难以实现复相材料之间的晶界相连，耐磨性能难以得到较大提升。“一种含均质料的刚玉-莫来石质高强耐磨可塑料”（ CN102030550B）和“硅酸钠结合矾土基均质料的高强耐磨可塑料及制备方法”（ CN103755368B）的专利技术，公开了以矾土均质料、氧化铝微粉等为原料制备复相耐磨可塑料，该方法均以毫米级别的粒径尺寸的原料进行结合，难以实现真正的复相结合，从而在耐磨性能上难以得到优化和改善。
发明内容
本发明旨在克服现有技术缺陷，目的是提供一种能节约资源、保护环境和降低成本的莫来石复相高强耐磨可塑料的制备方法；用该法所制得的莫来石复相高强耐磨可塑料具有气孔率低、导热系数低、强度高和体积稳定性好的特点。
为实现上述目的，本发明所采用的技术方案是：先以30~70wt%的莫来石骨料、15~35wt%的莫来石细粉、10~20wt%的α-氧化铝微粉和5~15wt%的硅微粉为原料，再外加所述原料0.15~0.25wt%的氧化钇和15~25wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
所述莫来石骨料的粒径小于5mm；莫来石细粉的粒径小于0.088mm；莫来石的主要化学成分是：Al2O3≥55wt%，SiO2≥42wt%，Fe2O3含量≤0.8wt%，Na2O+K2O≤1.5wt%。
所述α-氧化铝微粉的粒径小于0.044mm；α-氧化铝微粉的主要化学成分是：Al2O3≥99.2wt%， Na2O≤0.5wt%。
所述硅微粉的粒径小于0.01mm；硅微粉的主要化学成分是：SiO2≥95.2wt%，Fe2O3含量≤0.2wt%，Na2O+K2O≤1.0wt%。
所述氧化钇的粒径小于0.01mm；氧化钇的主要化学成分是：Y2O3≥99.9wt%。
所述硅酸锂溶液中Li2SiO3的浓度≥60wt%。
由于采用上述技术方案，本发明与现有技术相比具有如下积极效果：
1、本发明所制备的莫来石复相高强耐磨可塑料，弥补传统耐火可塑料的缺陷，实现不同物相之间的晶界无间隙连接，实现耐磨刻塑料强度及耐磨性能的大幅提升。
2、本发明采用捣打或涂抹成型的方式，可根据用途加工成不同形状的形状，应用于窑炉及各种热工设备工作衬、炉顶的修复，确保生产安全高效地进行。
因此，本发明具有节约资源、保护环境和成本低的特点；所制备的莫来石复相高强耐磨可塑料具有气孔率低、导热系数低、强度高和体积稳定性好的特点，直接用于窑炉及其他热工设备的修补。
具体实施方式
下面结合具体实施方式对本发明做进一步的描述，并非对本发明保护范围的限制。
为避免重复，先将本具体实施方式所涉及到的有关技术参数统一描述如下：
所述莫来石骨料的粒径小于5mm；莫来石细粉的粒径小于0.088mm；莫来石的主要化学成分是：Al2O3≥55wt%，SiO2≥42wt%，Fe2O3含量≤0.8wt%，Na2O+K2O≤1.5wt%。
所述α-氧化铝微粉的粒径小于0.044mm；α-氧化铝微粉的主要化学成分是：Al2O3≥99.2wt%， Na2O≤0.5wt%。
所述硅微粉的粒径小于0.01mm；硅微粉的主要化学成分是：SiO2≥95.2wt%，Fe2O3含量≤0.2wt%，Na2O+K2O≤1.0wt%。
所述氧化钇的粒径小于0.01mm；氧化钇的主要化学成分是：Y2O3≥99.9wt%。
所述硅酸锂溶液中Li2SiO3的浓度≥60wt%。
实施例1
一种莫来石复相高强耐磨可塑料及其制备方法。先以30~40wt%的莫来石骨料、30~35wt%的莫来石细粉、15~20wt%的α-氧化铝微粉和10~15wt%的硅微粉为原料，再外加所述原料0.15~0.20wt%的氧化钇和15~20wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
本实施例所制备的莫来石复相高强耐磨可塑料经检测：1100℃烧后耐压强度大于85.0MPa；耐磨系数CC小于3.0%；重烧线变化率低于±0.5%。
实施例2
一种莫来石复相高强耐磨可塑料及其制备方法。先以40~50wt%的莫来石骨料、25~30wt%的莫来石细粉、15~20wt%的α-氧化铝微粉和5~10wt%的硅微粉为原料，再外加所述原料0.20~0.25wt%的氧化钇和20~25wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
本实施例所制备的莫来石复相高强耐磨可塑料经检测：1100℃烧后耐压强度大于90.0MPa；耐磨系数CC小于2.0%；重烧线变化率低于±0.5%。
实施例3
一种莫来石复相高强耐磨可塑料及其制备方法。先以50~60wt%的莫来石骨料、20~25wt%的莫来石细粉、15~20wt%的α-氧化铝微粉和5~10wt%的硅微粉为原料，再外加所述原料0.15~0.20wt%的氧化钇和15~17wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
本实施例所制备的莫来石复相高强耐磨可塑料经检测：1100℃烧后耐压强度大于88.0MPa；耐磨系数CC小于2.5%；重烧线变化率低于±0.5%。
实施例4
一种莫来石复相高强耐磨可塑料及其制备方法。先以60~70wt%的莫来石骨料、15~20wt%的莫来石细粉、10~15wt%的α-氧化铝微粉和5~10wt%的硅微粉为原料，再外加所述原料0.20~0.25wt%的氧化钇和17~20wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
本实施例所制备的莫来石复相高强耐磨可塑料经检测：1100℃烧后耐压强度大于82.0MPa；耐磨系数CC小于2.0%；重烧线变化率低于±0.5%。
本具体实施方式与现有技术相比具有以下积极效果：
1、本发明所制备的莫来石复相高强耐磨可塑料，弥补传统耐火可塑料的缺陷，实现不同物相之间的晶界无间隙连接，实现耐磨刻塑料强度及耐磨性能的大幅提升。
2、本发明采用捣打或涂抹成型的方式，可根据用途加工成不同形状的形状，应用于窑炉及各种热工设备工作衬、炉顶的修复，确保生产安全高效地进行。
所制得的莫来石复相高强耐磨可塑料经检测：1100℃烧后耐压强度大于85MPa；耐磨系数CC小于3.0%；重烧线变化率低于±0.5%。
因此，本发明具有节约资源、保护环境和降低成本的特点，所制备的莫来石复相高强耐磨可塑料气孔率低、导热系数低、强度高和体积稳定性好，直接用于窑炉及其他热工设备的修补。
Claims (7)
1.一种莫来石复相高强耐磨可塑料的制备方法，其特征在于先以30~70wt%的莫来石骨料、15~35wt%的莫来石细粉、10~20wt%的α-氧化铝微粉和5~15wt%的硅微粉为原料，再外加所述原料0.15~0.25wt%的氧化钇和15~25wt%的硅酸锂溶液，混合均匀，室温密封养护24h，即得莫来石复相高强耐磨可塑料。
2.根据权利要求1所述的莫来石复相高强耐磨可塑料的制备方法，其特征在于所述莫来石骨料的粒径小于5mm；莫来石细粉的粒径小于0.088mm；莫来石的主要化学成分是：Al2O3≥55wt%，SiO2≥42wt%，Fe2O3含量≤0.8wt%，Na2O+K2O≤1.5wt%。
3. 根据权利要求1所述的莫来石复相高强耐磨可塑料的制备方法，其特征在于所述α-氧化铝微粉的粒径小于0.044mm；α-氧化铝微粉的主要化学成分是：Al2O3≥99.2wt%， Na2O≤0.5wt%。
4.根据权利要求1所述的莫来石复相高强耐磨可塑料的制备方法，其特征在于所述硅微粉的粒径小于0.01mm；硅微粉的主要化学成分是：SiO2≥95.2wt%，Fe2O3含量≤0.2wt%，Na2O+K2O≤1.0wt%。
5.根据权利要求1所述的莫来石复相高强耐磨可塑料的制备方法，其特征在于所述氧化钇的粒径小于0.01mm；氧化钇的主要化学成分是：Y2O3≥99.9wt%。
6.根据权利要求1所述的莫来石复相高强耐磨可塑料的制备方法，其特征在于所述硅酸锂溶液中Li2SiO3的浓度≥60wt%。
7.一种莫来石复相高强耐磨可塑料，其特征在于所述莫来石复相高强耐磨可塑料是根据权利要求1~6项中任一项所述莫来石复相高强耐磨可塑料的制备方法所制备的莫来石复相高强耐磨可塑料。
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