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Magnesian heat-insulating refractory material with micronucleus-shell structure and preparation method of magnesia heat-insulating refractory material
The invention relates to a magnesium heat-insulating refractory material with a micro-core-shell structure and a preparation method thereof. According to the technical scheme, any one of magnesium oxide nano powder, magnesium oxide micro powder and magnesium hydroxide micro powder serves as a magnesium source, or mixed powder of any two of the magnesium oxide nano powder, the magnesium oxide micro powder and the magnesium hydroxide micro powder serves as the magnesium source, or mixed powder of the magnesium oxide nano powder, the magnesium oxide micro powder and the magnesium hydroxide micro powder serves as the magnesium source. Uniformly mixing 40-94 wt% of the magnesium hydroxide fine powder and 6-60 wt% of a magnesium source, and carrying out mechanical pressing; and heating to 300-400 DEG C at the rate of 1-3 DEG C/min and keeping the temperature for 1-4 hours, heating to 1600-1800 DEG C at the rate of 3-5 DEG C/min, keeping the temperature for 3-8 hours, and cooling along with the furnace to obtain the magnesium heat-insulating refractory material with the micronucleus-shell structure. The prepared product is of a micro-core-shell structure with the microporous magnesium oxide microparticles containing the nanopores as the core and the compact magnesium oxide layer as the shell, and has the advantages of being high in strength and excellent in erosion resistance.
本发明涉及一种具有微核壳结构的镁质隔热耐火材料及其制备方法。其技术方案是：先以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉中的任意一种为镁源，或以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉中的任意两种的混合粉为镁源，或以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉三种的混合粉为镁源。再将40～94wt％的所述氢氧化镁细粉和6～60wt％镁源混合均匀，机压成型；然后先后以1～3℃/min和3～5℃/min的速率，升温至300～400℃保温1～4h和升温至1600～1800℃保温3～8h，随炉冷却，制得具有微核壳结构的镁质隔热耐火材料。本发明所制制品以含纳米孔的多微孔氧化镁微颗粒为核、以致密的氧化镁层为壳的微核壳结构，具有强度高和抗侵蚀性能优良的特点。
Magnesian heat-insulating refractory material with micronucleus-shell structure and preparation method of magnesia heat-insulating refractory material
The invention relates to a magnesium heat-insulating refractory material with a micro-core-shell structure and a preparation method thereof. According to the technical scheme, any one of magnesium oxide nano powder, magnesium oxide micro powder and magnesium hydroxide micro powder serves as a magnesium source, or mixed powder of any two of the magnesium oxide nano powder, the magnesium oxide micro powder and the magnesium hydroxide micro powder serves as the magnesium source, or mixed powder of the magnesium oxide nano powder, the magnesium oxide micro powder and the magnesium hydroxide micro powder serves as the magnesium source. Uniformly mixing 40-94 wt% of the magnesium hydroxide fine powder and 6-60 wt% of a magnesium source, and carrying out mechanical pressing; and heating to 300-400 DEG C at the rate of 1-3 DEG C/min and keeping the temperature for 1-4 hours, heating to 1600-1800 DEG C at the rate of 3-5 DEG C/min, keeping the temperature for 3-8 hours, and cooling along with the furnace to obtain the magnesium heat-insulating refractory material with the micronucleus-shell structure. The prepared product is of a micro-core-shell structure with the microporous magnesium oxide microparticles containing the nanopores as the core and the compact magnesium oxide layer as the shell, and has the advantages of being high in strength and excellent in erosion resistance.
本发明涉及一种具有微核壳结构的镁质隔热耐火材料及其制备方法。其技术方案是：先以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉中的任意一种为镁源，或以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉中的任意两种的混合粉为镁源，或以氧化镁纳米粉、氧化镁微粉和氢氧化镁微粉三种的混合粉为镁源。再将40～94wt％的所述氢氧化镁细粉和6～60wt％镁源混合均匀，机压成型；然后先后以1～3℃/min和3～5℃/min的速率，升温至300～400℃保温1～4h和升温至1600～1800℃保温3～8h，随炉冷却，制得具有微核壳结构的镁质隔热耐火材料。本发明所制制品以含纳米孔的多微孔氧化镁微颗粒为核、以致密的氧化镁层为壳的微核壳结构，具有强度高和抗侵蚀性能优良的特点。
Magnesian heat-insulating refractory material with micronucleus-shell structure and preparation method of magnesia heat-insulating refractory material
具有微核壳结构的镁质隔热耐火材料及其制备方法
YAN WEN (author) / ZHANG ZHEHENG (author) / HAN ZHENG (author) / LI YUANBING (author) / LI YAWEI (author)
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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