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Corundum mullite platinum crucible protection bushing and preparation method thereof
The invention relates to a corundum mullite platinum crucible protection bushing and a preparation method thereof. The protection bushing comprises aggregate, a matrix and an additive, wherein the aggregate comprises 40-50 parts of mullite and 10-30 parts of calcium alumino-titanate hollow spheres, and the matrix comprises 10-30 parts of corundum fine powder, 5-10 parts of alpha-activated aluminamicro-powder and 1-5 parts of aluminate cement; and the additive comprises a water reducing agent, and the water reducing agent accounts for 0.1-0.7% of the total mass of the aggregate and the matrix.The preparation method of the protection bushing comprises the following steps: 1, uniformly mixing the calcium aluminotitanate hollow spheres, aggregate and the additive, then uniformly mixing withmullite, adding water into the mixture, and stirring until the mixture is petal-shaped so as to obtain a castable; 3, adding the mixture into a mold under vibration to make the surface smooth, bubblesprevented from floating upwards and a water sealing phenomenon avoided; and 4, naturally curing, demolding, drying, and sintering. The prepared protection bushing has the beneficial effects of beingresistant to high temperature, good in thermal shock stability and long in service life.
本发明一种刚玉莫来石质铂金坩埚保护衬套及其制备方法，保护衬套包括骨料、基质和添加剂；骨料包括莫来石40～50份、钛铝酸钙空心球10～30份，基质包括刚玉细粉10～30份、α‑活性氧化铝微粉5～10份、铝酸盐水泥1～5份；添加剂包括减水剂，减水剂占骨料和基质总质量的0.1％～0.7％。在制备保护衬套时，包括步骤1，将钛铝酸钙空心球、骨料和添加剂混合均匀，再与莫来石混合均匀，向混合物中加入水后搅拌，直到呈花瓣状，得到浇注料；步骤3，在振动下添加至模具中，使表面平整、无气泡上浮且无密水现象；步骤4，自然养护后脱模，干燥后烧成，制得的保护衬套具有耐高温、热震稳定性好、使用寿命长的特点。
Corundum mullite platinum crucible protection bushing and preparation method thereof
The invention relates to a corundum mullite platinum crucible protection bushing and a preparation method thereof. The protection bushing comprises aggregate, a matrix and an additive, wherein the aggregate comprises 40-50 parts of mullite and 10-30 parts of calcium alumino-titanate hollow spheres, and the matrix comprises 10-30 parts of corundum fine powder, 5-10 parts of alpha-activated aluminamicro-powder and 1-5 parts of aluminate cement; and the additive comprises a water reducing agent, and the water reducing agent accounts for 0.1-0.7% of the total mass of the aggregate and the matrix.The preparation method of the protection bushing comprises the following steps: 1, uniformly mixing the calcium aluminotitanate hollow spheres, aggregate and the additive, then uniformly mixing withmullite, adding water into the mixture, and stirring until the mixture is petal-shaped so as to obtain a castable; 3, adding the mixture into a mold under vibration to make the surface smooth, bubblesprevented from floating upwards and a water sealing phenomenon avoided; and 4, naturally curing, demolding, drying, and sintering. The prepared protection bushing has the beneficial effects of beingresistant to high temperature, good in thermal shock stability and long in service life.
本发明一种刚玉莫来石质铂金坩埚保护衬套及其制备方法，保护衬套包括骨料、基质和添加剂；骨料包括莫来石40～50份、钛铝酸钙空心球10～30份，基质包括刚玉细粉10～30份、α‑活性氧化铝微粉5～10份、铝酸盐水泥1～5份；添加剂包括减水剂，减水剂占骨料和基质总质量的0.1％～0.7％。在制备保护衬套时，包括步骤1，将钛铝酸钙空心球、骨料和添加剂混合均匀，再与莫来石混合均匀，向混合物中加入水后搅拌，直到呈花瓣状，得到浇注料；步骤3，在振动下添加至模具中，使表面平整、无气泡上浮且无密水现象；步骤4，自然养护后脱模，干燥后烧成，制得的保护衬套具有耐高温、热震稳定性好、使用寿命长的特点。
Corundum mullite platinum crucible protection bushing and preparation method thereof
一种刚玉莫来石质铂金坩埚保护衬套及其制备方法
TANG BINGJIE (author) / XUE XINJIAN (author) / WU XIAOXI (author) / GUO HUANG (author)
2020-09-01
Patent
Electronic Resource
Chinese
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