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Lightweight periclase-zirconite aggregate with core-shell structure and preparation method of lightweight periclase-zirconite aggregate
The invention particularly relates to lightweight periclase-zirconite aggregate with a core-shell structure and a preparation method of the lightweight periclase-zirconite aggregate. According to the technical scheme, 84.0-96.0 wt% of magnesium hydroxide fine powder and 4.0-16.0 wt% of zirconite fine powder serve as raw materials, aluminum hydroxide fine powder accounting for 2.0-5.0 wt% of the raw materials and polyvinyl alcohol accounting for 2.5-5.0 wt% of the raw materials are added, and the raw materials are stirred to be uniform, formed and dried; and then carrying out heat preservation for 1-3 hours under the condition of 800-1100 DEG C, then carrying out heat preservation for 1-4 hours under the condition of 1400-1600 DEG C, cooling, crushing, screening and packaging to prepare the lightweight periclase-zirconite aggregate with the core-shell structure. The lightweight periclase-zirconite aggregate with the core-shell structure prepared by the invention has the characteristics of high closed porosity, small pore size, high strength, low heat conductivity coefficient, excellent thermal shock resistance and excellent erosion resistance.
本发明具体涉及一种核壳结构的轻量方镁石‑锆英石骨料及其制备方法。其技术方案是：以84.0～96.0wt％的氢氧化镁细粉和4.0～16.0wt％的锆英石细粉为原料，外加所述原料2.0～5.0wt％的氢氧化铝细粉和2.5～5.0wt％的聚乙烯醇，搅拌均匀，成型，干燥；然后于800～1100℃条件下保温1～3小时，再于1400～1600℃条件下保温1～4小时，冷却，破碎，筛分，包装，制得核壳结构的轻量方镁石‑锆英石骨料。本发明制备的核壳结构的轻量方镁石‑锆英石骨料具有闭气孔率高、气孔尺寸小、强度高、导热系数低、抗热震性能优异和抗侵蚀性能优良的特点。
Lightweight periclase-zirconite aggregate with core-shell structure and preparation method of lightweight periclase-zirconite aggregate
The invention particularly relates to lightweight periclase-zirconite aggregate with a core-shell structure and a preparation method of the lightweight periclase-zirconite aggregate. According to the technical scheme, 84.0-96.0 wt% of magnesium hydroxide fine powder and 4.0-16.0 wt% of zirconite fine powder serve as raw materials, aluminum hydroxide fine powder accounting for 2.0-5.0 wt% of the raw materials and polyvinyl alcohol accounting for 2.5-5.0 wt% of the raw materials are added, and the raw materials are stirred to be uniform, formed and dried; and then carrying out heat preservation for 1-3 hours under the condition of 800-1100 DEG C, then carrying out heat preservation for 1-4 hours under the condition of 1400-1600 DEG C, cooling, crushing, screening and packaging to prepare the lightweight periclase-zirconite aggregate with the core-shell structure. The lightweight periclase-zirconite aggregate with the core-shell structure prepared by the invention has the characteristics of high closed porosity, small pore size, high strength, low heat conductivity coefficient, excellent thermal shock resistance and excellent erosion resistance.
本发明具体涉及一种核壳结构的轻量方镁石‑锆英石骨料及其制备方法。其技术方案是：以84.0～96.0wt％的氢氧化镁细粉和4.0～16.0wt％的锆英石细粉为原料，外加所述原料2.0～5.0wt％的氢氧化铝细粉和2.5～5.0wt％的聚乙烯醇，搅拌均匀，成型，干燥；然后于800～1100℃条件下保温1～3小时，再于1400～1600℃条件下保温1～4小时，冷却，破碎，筛分，包装，制得核壳结构的轻量方镁石‑锆英石骨料。本发明制备的核壳结构的轻量方镁石‑锆英石骨料具有闭气孔率高、气孔尺寸小、强度高、导热系数低、抗热震性能优异和抗侵蚀性能优良的特点。
Lightweight periclase-zirconite aggregate with core-shell structure and preparation method of lightweight periclase-zirconite aggregate
一种核壳结构的轻量方镁石-锆英石骨料及其制备方法
XU YIBIAO (author) / HU CHENGQING (author) / LI YAWEI (author) / YAN WEN (author) / SANG SHAOBAI (author)
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Lightweight periclase-spinel aggregate and preparation method thereof
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