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Lightweight periclase-magnesium aluminate spinel-carbon refractory material and preparation method thereof
The invention relates to a lightweight periclase-magnesium aluminate spinel-carbon refractory material and a preparation method thereof. According to the technical scheme, 20 wt%-25 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate I, 18 wt%-23 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate II and 15 wt%-22 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate III are used as total aggregates, and 31 wt%-45 wt% of magnesia fine powder, 0.1 wt%-1.5 wt% of monatomic silicon powder and 0.5 wt%-3.5 wt% of crystalline flake graphite powder are used as total matrixes. The preparation method comprises the following steps: putting the total aggregate into a stirrer, adding modified liquid thermosetting phenolic resin which accounts for 2-6wt% of the sum of the total aggregate and the total matrix, and uniformly mixing; then adding the total matrix, and stirring; and carrying out mechanical pressing molding, and carrying out heat preservation at 180-300 DEG C, so as to prepare the lightweight periclase-magnesium aluminate spinel-carbon refractory material. The product has the characteristics of multi-scale core-shell structure, low heat conductivity coefficient, excellent thermal shock resistance, excellent erosion resistance and good oxidation resistance.
本发明涉及一种轻量化方镁石‑镁铝尖晶石‑碳耐火材料及其制备方法。其技术方案是：以20～25wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料I、18～23wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料II和15～22wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料Ⅲ为总骨料，以31～45wt％的镁砂细粉、0.1～1.5wt％的单质硅粉和0.5～3.5wt％的鳞片石墨粉为总基质。先将总骨料置于搅拌机中，外加总骨料和总基质之和2～6wt％的改性液态热固性酚醛树脂，混匀；然后加入总基质，搅拌；机压成型，在180～300℃条件下保温，制得轻量化方镁石‑镁铝尖晶石‑碳耐火材料。该制品具有多尺度核壳结构、导热系数低、热震稳定性能优良、耐冲刷性优异和抗氧化性好的特点。
Lightweight periclase-magnesium aluminate spinel-carbon refractory material and preparation method thereof
The invention relates to a lightweight periclase-magnesium aluminate spinel-carbon refractory material and a preparation method thereof. According to the technical scheme, 20 wt%-25 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate I, 18 wt%-23 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate II and 15 wt%-22 wt% of microporous periclase-magnesium aluminate spinel refractory aggregate III are used as total aggregates, and 31 wt%-45 wt% of magnesia fine powder, 0.1 wt%-1.5 wt% of monatomic silicon powder and 0.5 wt%-3.5 wt% of crystalline flake graphite powder are used as total matrixes. The preparation method comprises the following steps: putting the total aggregate into a stirrer, adding modified liquid thermosetting phenolic resin which accounts for 2-6wt% of the sum of the total aggregate and the total matrix, and uniformly mixing; then adding the total matrix, and stirring; and carrying out mechanical pressing molding, and carrying out heat preservation at 180-300 DEG C, so as to prepare the lightweight periclase-magnesium aluminate spinel-carbon refractory material. The product has the characteristics of multi-scale core-shell structure, low heat conductivity coefficient, excellent thermal shock resistance, excellent erosion resistance and good oxidation resistance.
本发明涉及一种轻量化方镁石‑镁铝尖晶石‑碳耐火材料及其制备方法。其技术方案是：以20～25wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料I、18～23wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料II和15～22wt％的所述多微孔方镁石‑镁铝尖晶石耐火骨料Ⅲ为总骨料，以31～45wt％的镁砂细粉、0.1～1.5wt％的单质硅粉和0.5～3.5wt％的鳞片石墨粉为总基质。先将总骨料置于搅拌机中，外加总骨料和总基质之和2～6wt％的改性液态热固性酚醛树脂，混匀；然后加入总基质，搅拌；机压成型，在180～300℃条件下保温，制得轻量化方镁石‑镁铝尖晶石‑碳耐火材料。该制品具有多尺度核壳结构、导热系数低、热震稳定性能优良、耐冲刷性优异和抗氧化性好的特点。
Lightweight periclase-magnesium aluminate spinel-carbon refractory material and preparation method thereof
轻量化方镁石-镁铝尖晶石-碳耐火材料及其制备方法
YAN WEN (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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