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Microporous periclase-magnesium aluminate spinel refractory aggregate and preparation method thereof
The invention relates to a microporous periclase-magnesium aluminate spinel refractory aggregate and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: by taking more than one of nano aluminum oxide, alpha-aluminum oxide micro powder and aluminum hydroxide micro powder as an aluminum source, uniformly mixing the aluminum source with magnesium hydroxide fine powder, adding water, stirring, carrying out mechanical pressing, and drying; then, the temperature is increased to 300-400 DEG C at the speed of 1-3 DEG C/min, and heat preservation is conducted for 0.5 The temperature is increased to 1600-1800 DEG C at the speed of 2-5 DEG C/min, and heat preservation is conducted for 2-5 h; and cooling along with the furnace, crushing and screening to obtain the microporous periclase-magnesium aluminate spinel refractory aggregate. The process is simple, and the prepared microporous periclase-magnesium aluminate spinel refractory aggregate contains a nano-pore micronucleus-shell structure and has the characteristics of high purity, low heat conductivity coefficient, high strength, excellent thermal shock stability and excellent erosion and permeation resistance.
本发明涉及一种多微孔方镁石‑镁铝尖晶石耐火骨料及其制备方法。其技术方案是：以纳米氧化铝、α‑氧化铝微粉和氢氧化铝微粉中的一种以上为铝源，将所述铝源与氢氧化镁细粉混合均匀，加水搅拌，机压成型，干燥；然后以1～3℃/min的速率升温至300～400℃，保温0.5～1.5h；再以2～5℃/min的速率升温至1600～1800℃，保温2～5h；随炉冷却，破碎，筛分，制得多微孔方镁石‑镁铝尖晶石耐火骨料。本发明工艺简单，所制备的多微孔方镁石‑镁铝尖晶石耐火骨料含纳米气孔的微核壳结构，具有纯度高、导热系数低、强度高、热震稳定性优良和抗侵蚀渗透性能优异的特点。
Microporous periclase-magnesium aluminate spinel refractory aggregate and preparation method thereof
The invention relates to a microporous periclase-magnesium aluminate spinel refractory aggregate and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: by taking more than one of nano aluminum oxide, alpha-aluminum oxide micro powder and aluminum hydroxide micro powder as an aluminum source, uniformly mixing the aluminum source with magnesium hydroxide fine powder, adding water, stirring, carrying out mechanical pressing, and drying; then, the temperature is increased to 300-400 DEG C at the speed of 1-3 DEG C/min, and heat preservation is conducted for 0.5 The temperature is increased to 1600-1800 DEG C at the speed of 2-5 DEG C/min, and heat preservation is conducted for 2-5 h; and cooling along with the furnace, crushing and screening to obtain the microporous periclase-magnesium aluminate spinel refractory aggregate. The process is simple, and the prepared microporous periclase-magnesium aluminate spinel refractory aggregate contains a nano-pore micronucleus-shell structure and has the characteristics of high purity, low heat conductivity coefficient, high strength, excellent thermal shock stability and excellent erosion and permeation resistance.
本发明涉及一种多微孔方镁石‑镁铝尖晶石耐火骨料及其制备方法。其技术方案是：以纳米氧化铝、α‑氧化铝微粉和氢氧化铝微粉中的一种以上为铝源，将所述铝源与氢氧化镁细粉混合均匀，加水搅拌，机压成型，干燥；然后以1～3℃/min的速率升温至300～400℃，保温0.5～1.5h；再以2～5℃/min的速率升温至1600～1800℃，保温2～5h；随炉冷却，破碎，筛分，制得多微孔方镁石‑镁铝尖晶石耐火骨料。本发明工艺简单，所制备的多微孔方镁石‑镁铝尖晶石耐火骨料含纳米气孔的微核壳结构，具有纯度高、导热系数低、强度高、热震稳定性优良和抗侵蚀渗透性能优异的特点。
Microporous periclase-magnesium aluminate spinel refractory aggregate and preparation method thereof
一种多微孔方镁石-镁铝尖晶石耐火骨料及其制备方法
YAN WEN (author) / WANG CHONGWEN (author) / HAN ZHENG (author) / LI YUANBING (author) / LI YAWEI (author)
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Lightweight periclase-magnesium aluminate spinel refractory material and preparation method thereof
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