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Lightweight periclase-magnesium aluminate spinel refractory material and preparation method thereof
The invention relates to a lightweight periclase-magnesium aluminate spinel refractory material and a preparation method thereof. According to the technical scheme, 10-15 wt% of modified microporous refractory aggregate I, 21-30 wt% of modified microporous refractory aggregate II and 9-11 wt% of modified microporous refractory aggregate III are used as modified microporous refractory aggregates, and 8-15 wt% of spinel fine powder and 31-38 wt% of magnesia fine powder are used as matrixes. The preparation method comprises the following steps: firstly, putting modified microporous refractory aggregate into a stirrer, adding sulfurous acid paper pulp waste liquid which accounts for 3-8wt% of the sum of the modified microporous refractory aggregate and a matrix, and stirring; and then adding a matrix, stirring, molding and drying under the condition of 150-200MPa, then heating to 1300-1600 DEG C at the rate of 3-8 DEG C/min, preserving heat for 3-8 hours, and cooling along with a furnace to prepare the lightweight periclase-magnesium aluminate spinel refractory material. The prepared product has a multi-scale core-shell structure containing nano pores, and is low in heat conductivity coefficient, high in strength and excellent in erosion and penetration resistance and thermal shock stability.
本发明涉及一种轻量化方镁石‑镁铝尖晶石耐火材料及其制备方法。其技术方案是：以10～15wt％的改性多微孔耐火骨料I、21～30wt％的改性多微孔耐火骨料II和9～11wt％的改性多微孔耐火骨料III为改性多微孔耐火骨料，以8～15wt％的尖晶石细粉和31～38wt％的镁砂细粉为基质。先将改性多微孔耐火骨料置于搅拌机中，外加改性多微孔耐火骨料与基质之和3～8wt％的亚硫酸纸浆废液，搅拌；然后加入基质，搅拌，在150～200MPa条件下成型，干燥，然后以3～8℃/min的速率升温至1300～1600℃，保温3～8h，随炉冷却，制得轻量化方镁石‑镁铝尖晶石耐火材料。所制制品具有含纳米气孔的多尺度核壳结构，导热系数低、强度高、抗侵蚀渗透性能和热震稳定性优异。
Lightweight periclase-magnesium aluminate spinel refractory material and preparation method thereof
The invention relates to a lightweight periclase-magnesium aluminate spinel refractory material and a preparation method thereof. According to the technical scheme, 10-15 wt% of modified microporous refractory aggregate I, 21-30 wt% of modified microporous refractory aggregate II and 9-11 wt% of modified microporous refractory aggregate III are used as modified microporous refractory aggregates, and 8-15 wt% of spinel fine powder and 31-38 wt% of magnesia fine powder are used as matrixes. The preparation method comprises the following steps: firstly, putting modified microporous refractory aggregate into a stirrer, adding sulfurous acid paper pulp waste liquid which accounts for 3-8wt% of the sum of the modified microporous refractory aggregate and a matrix, and stirring; and then adding a matrix, stirring, molding and drying under the condition of 150-200MPa, then heating to 1300-1600 DEG C at the rate of 3-8 DEG C/min, preserving heat for 3-8 hours, and cooling along with a furnace to prepare the lightweight periclase-magnesium aluminate spinel refractory material. The prepared product has a multi-scale core-shell structure containing nano pores, and is low in heat conductivity coefficient, high in strength and excellent in erosion and penetration resistance and thermal shock stability.
本发明涉及一种轻量化方镁石‑镁铝尖晶石耐火材料及其制备方法。其技术方案是：以10～15wt％的改性多微孔耐火骨料I、21～30wt％的改性多微孔耐火骨料II和9～11wt％的改性多微孔耐火骨料III为改性多微孔耐火骨料，以8～15wt％的尖晶石细粉和31～38wt％的镁砂细粉为基质。先将改性多微孔耐火骨料置于搅拌机中，外加改性多微孔耐火骨料与基质之和3～8wt％的亚硫酸纸浆废液，搅拌；然后加入基质，搅拌，在150～200MPa条件下成型，干燥，然后以3～8℃/min的速率升温至1300～1600℃，保温3～8h，随炉冷却，制得轻量化方镁石‑镁铝尖晶石耐火材料。所制制品具有含纳米气孔的多尺度核壳结构，导热系数低、强度高、抗侵蚀渗透性能和热震稳定性优异。
Lightweight periclase-magnesium aluminate spinel refractory material and preparation method thereof
一种轻量化方镁石-镁铝尖晶石耐火材料及其制备方法
YAN WEN (author) / WANG CHONGWEN (author) / HAN ZHENG (author) / CHEN JUNFENG (author) / LI YUANBING (author) / LI YAWEI (author)
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Microporous periclase-magnesium aluminate spinel refractory aggregate and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024
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