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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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