Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous periclase-magnesium-iron-aluminum composite spinel ceramic material and preparation method thereof
The invention relates to a porous periclase-magnesium-iron-aluminum composite spinel ceramic material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: heating magnesite fine powder to 650-750 DEG C, keeping the temperature, heating to 1000-1200 DEG C, and keeping the temperature to obtain a periclase-olivine composite powder; then, taking 60 to 87wt% of the periclase-olivine composite powder, 0.1 to 5wt% of iron oxide powder, 3 to 20wt% of an aluminum sol and 5 to 20wt% of aluminum hydroxide micro powder as raw materials, putting the raw materials into a vacuum stirrer, vacuumizing to 2.0 kPa or below, stirring, keeping the temperature at 110-220 DEG C, cooling to obtain a mixed powder, carrying out mechanical pressing, and drying; and finally, carrying out heat preservation at 600-900 DEG C and 1550-1600 DEG C correspondingly, and carrying out furnace cooling to obtain the porous periclase-magnesium-iron-aluminum composite spinel ceramic material. The preparation method is low in production cost and environment-friendly, and the prepared product has the characteristics of small volume density, low air permeability, low heat conductivity coefficient, high strength and good erosion resistance.
本发明涉及一种多孔方镁石‑镁铁铝复合尖晶石陶瓷材料及其制备方法。其技术方案是：将菱镁矿细粉升温至650～750℃，保温，再升温至1000～1200℃，保温，得到方镁石‑橄榄石复合粉体。然后以60～87wt％的方镁石‑橄榄石复合粉体、0.1～5wt％的氧化铁粉、3～20wt％的铝溶胶和5～20wt％的氢氧化铝微粉为原料，将原料置于真空搅拌机中，抽真空至2.0kPa以下，搅拌，在110℃～220℃保温，冷却，得到混合粉体，机压成型，干燥；最后在600～900℃和1550～1600℃分别保温，随炉冷却，制得多孔方镁石‑镁铁铝复合尖晶石陶瓷材料。本发明生产成本低和环境友好，所制制品具有体积密度小、透气度低、导热系数低、强度高和抗侵蚀性能好的特点。
Porous periclase-magnesium-iron-aluminum composite spinel ceramic material and preparation method thereof
The invention relates to a porous periclase-magnesium-iron-aluminum composite spinel ceramic material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: heating magnesite fine powder to 650-750 DEG C, keeping the temperature, heating to 1000-1200 DEG C, and keeping the temperature to obtain a periclase-olivine composite powder; then, taking 60 to 87wt% of the periclase-olivine composite powder, 0.1 to 5wt% of iron oxide powder, 3 to 20wt% of an aluminum sol and 5 to 20wt% of aluminum hydroxide micro powder as raw materials, putting the raw materials into a vacuum stirrer, vacuumizing to 2.0 kPa or below, stirring, keeping the temperature at 110-220 DEG C, cooling to obtain a mixed powder, carrying out mechanical pressing, and drying; and finally, carrying out heat preservation at 600-900 DEG C and 1550-1600 DEG C correspondingly, and carrying out furnace cooling to obtain the porous periclase-magnesium-iron-aluminum composite spinel ceramic material. The preparation method is low in production cost and environment-friendly, and the prepared product has the characteristics of small volume density, low air permeability, low heat conductivity coefficient, high strength and good erosion resistance.
本发明涉及一种多孔方镁石‑镁铁铝复合尖晶石陶瓷材料及其制备方法。其技术方案是：将菱镁矿细粉升温至650～750℃，保温，再升温至1000～1200℃，保温，得到方镁石‑橄榄石复合粉体。然后以60～87wt％的方镁石‑橄榄石复合粉体、0.1～5wt％的氧化铁粉、3～20wt％的铝溶胶和5～20wt％的氢氧化铝微粉为原料，将原料置于真空搅拌机中，抽真空至2.0kPa以下，搅拌，在110℃～220℃保温，冷却，得到混合粉体，机压成型，干燥；最后在600～900℃和1550～1600℃分别保温，随炉冷却，制得多孔方镁石‑镁铁铝复合尖晶石陶瓷材料。本发明生产成本低和环境友好，所制制品具有体积密度小、透气度低、导热系数低、强度高和抗侵蚀性能好的特点。
Porous periclase-magnesium-iron-aluminum composite spinel ceramic material and preparation method thereof
一种多孔方镁石-镁铁铝复合尖晶石陶瓷材料及其制备方法
YAN WEN (Autor:in) / WU HAN (Autor:in) / DAI YAJIE (Autor:in) / HUANG YIFAN (Autor:in) / STEN SCHAFFNER (Autor:in) / CHEN ZHE (Autor:in) / LI YAWEI (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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