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Lightweight periclase-calcium hexaluminate-calcium zirconate aggregate and preparation method thereof
The invention particularly relates to a lightweight periclase-calcium hexaluminate-calcium zirconate aggregate and a preparation method thereof. The technical scheme is as follows: 70.0-90.0 wt% of magnesium hydroxide fine powder and 10.0-30.0 wt% of aluminum hydroxide fine powder are taken as raw materials, 2.0-8.0 wt% of calcium carbonate fine powder, 1.0-3.0 wt% of monoclinic zirconium oxide fine powder and 2.5-5.0 wt% of polyvinyl alcohol are added, and the raw materials are uniformly stirred, mechanically pressed and dried; and then carrying out heat preservation for 1-4 hours under the condition of 600-1000 DEG C, then carrying out heat preservation for 1-6 hours under the condition of 1400-1600 DEG C, cooling, crushing, screening and packaging to obtain the lightweight periclase-calcium hexaluminate-calcium zirconate aggregate. The lightweight periclase-calcium hexaluminate-calcium zirconate aggregate prepared by the invention has the characteristics of high closed porosity, low heat conductivity coefficient, high strength, excellent thermal shock resistance and excellent erosion resistance.
本发明具体涉及一种轻量方镁石‑六铝酸钙‑锆酸钙骨料及其制备方法。其技术方案是：以70.0～90.0wt％的氢氧化镁细粉和10.0～30.0wt％的氢氧化铝细粉为原料，外加所述原料2.0～8.0wt％的碳酸钙细粉、1.0～3.0wt％的单斜氧化锆细粉和2.5～5.0wt％的聚乙烯醇，搅拌均匀，机压成型，干燥；然后于600～1000℃条件下保温1～4小时，再于1400～1600℃条件下保温1～6小时，冷却，破碎，筛分，包装，制得轻量方镁石‑六铝酸钙‑锆酸钙骨料。本发明所制备的轻量方镁石‑六铝酸钙‑锆酸钙骨料具有闭气孔率高、导热系数低、强度大、抗热震性能优异和抗侵蚀性能优良的特点。
Lightweight periclase-calcium hexaluminate-calcium zirconate aggregate and preparation method thereof
The invention particularly relates to a lightweight periclase-calcium hexaluminate-calcium zirconate aggregate and a preparation method thereof. The technical scheme is as follows: 70.0-90.0 wt% of magnesium hydroxide fine powder and 10.0-30.0 wt% of aluminum hydroxide fine powder are taken as raw materials, 2.0-8.0 wt% of calcium carbonate fine powder, 1.0-3.0 wt% of monoclinic zirconium oxide fine powder and 2.5-5.0 wt% of polyvinyl alcohol are added, and the raw materials are uniformly stirred, mechanically pressed and dried; and then carrying out heat preservation for 1-4 hours under the condition of 600-1000 DEG C, then carrying out heat preservation for 1-6 hours under the condition of 1400-1600 DEG C, cooling, crushing, screening and packaging to obtain the lightweight periclase-calcium hexaluminate-calcium zirconate aggregate. The lightweight periclase-calcium hexaluminate-calcium zirconate aggregate prepared by the invention has the characteristics of high closed porosity, low heat conductivity coefficient, high strength, excellent thermal shock resistance and excellent erosion resistance.
本发明具体涉及一种轻量方镁石‑六铝酸钙‑锆酸钙骨料及其制备方法。其技术方案是：以70.0～90.0wt％的氢氧化镁细粉和10.0～30.0wt％的氢氧化铝细粉为原料，外加所述原料2.0～8.0wt％的碳酸钙细粉、1.0～3.0wt％的单斜氧化锆细粉和2.5～5.0wt％的聚乙烯醇，搅拌均匀，机压成型，干燥；然后于600～1000℃条件下保温1～4小时，再于1400～1600℃条件下保温1～6小时，冷却，破碎，筛分，包装，制得轻量方镁石‑六铝酸钙‑锆酸钙骨料。本发明所制备的轻量方镁石‑六铝酸钙‑锆酸钙骨料具有闭气孔率高、导热系数低、强度大、抗热震性能优异和抗侵蚀性能优良的特点。
Lightweight periclase-calcium hexaluminate-calcium zirconate aggregate and preparation method thereof
一种轻量方镁石-六铝酸钙-锆酸钙骨料及其制备方法
XU YIBIAO (author) / REN JIAYI (author) / LI YAWEI (author) / YAN WEN (author) / SANG SHAOBAI (author)
2024-12-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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