A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aluminum-magnesium-chromium composite spinel brick
The invention discloses an aluminum-magnesium-chromium composite spinel brick, which belongs to the technical field of refractory bricks, and the preparation materials of the aluminum-magnesium-chromium composite spinel brick comprise tabular corundum, mullite, magnesium oxide, chromium sesquioxide, chromium oxide micro powder, chrome green, magnesium aluminate spinel and a phosphate binder. According to the present invention, the crushed alumina sand in the aggregate begins to perform the solid phase sintering reaction in the firing process at about 1000 DEG C, and generates the in-situ micronized spinel phase, such that the alumina-magnesia brick has good medium-high temperature strength, the green body raw material particles are firmly bonded based on the phosphate binder so as to improve the green brick strength; by combining the air entraining agent and the defoaming agent for adding, large bubbles are discharged and small bubble molecules are introduced, so that the density of the green brick and the internal bubbles can be effectively controlled, the condition of cracking in the firing process is avoided, and the effects of improving the yield and the quality of a finished product are further achieved.
本发明公开了一种铝镁铬复合尖晶石砖，属于耐火砖技术领域，铝镁铬复合尖晶石砖的制备材料是由板状刚玉、莫来石、氧化镁、三氧化二铬、氧化铬微粉、铬绿、镁铝尖晶石、磷酸盐结合剂组成，对材料粒度、含量的基础需求，在骨料中通过碾碎处理的氧化铝砂，在烧制过程中，1000℃左右就开始发生固相烧结反应，并生成原位微细化尖晶石相，使得铝镁砖有良好的中高温强度，基于磷酸盐结合剂使坯体原料微粒牢固粘结起来，提升砖坯强度，通过结合引气剂和消泡剂进行添加的方式，排出大气泡并引入小气泡分子，使得砖坯密度及其内部气泡能够得到有效控制，避免烧制过程龟裂的情况发生，进而达成提升良品率以及成品品质的效果。
Aluminum-magnesium-chromium composite spinel brick
The invention discloses an aluminum-magnesium-chromium composite spinel brick, which belongs to the technical field of refractory bricks, and the preparation materials of the aluminum-magnesium-chromium composite spinel brick comprise tabular corundum, mullite, magnesium oxide, chromium sesquioxide, chromium oxide micro powder, chrome green, magnesium aluminate spinel and a phosphate binder. According to the present invention, the crushed alumina sand in the aggregate begins to perform the solid phase sintering reaction in the firing process at about 1000 DEG C, and generates the in-situ micronized spinel phase, such that the alumina-magnesia brick has good medium-high temperature strength, the green body raw material particles are firmly bonded based on the phosphate binder so as to improve the green brick strength; by combining the air entraining agent and the defoaming agent for adding, large bubbles are discharged and small bubble molecules are introduced, so that the density of the green brick and the internal bubbles can be effectively controlled, the condition of cracking in the firing process is avoided, and the effects of improving the yield and the quality of a finished product are further achieved.
本发明公开了一种铝镁铬复合尖晶石砖，属于耐火砖技术领域，铝镁铬复合尖晶石砖的制备材料是由板状刚玉、莫来石、氧化镁、三氧化二铬、氧化铬微粉、铬绿、镁铝尖晶石、磷酸盐结合剂组成，对材料粒度、含量的基础需求，在骨料中通过碾碎处理的氧化铝砂，在烧制过程中，1000℃左右就开始发生固相烧结反应，并生成原位微细化尖晶石相，使得铝镁砖有良好的中高温强度，基于磷酸盐结合剂使坯体原料微粒牢固粘结起来，提升砖坯强度，通过结合引气剂和消泡剂进行添加的方式，排出大气泡并引入小气泡分子，使得砖坯密度及其内部气泡能够得到有效控制，避免烧制过程龟裂的情况发生，进而达成提升良品率以及成品品质的效果。
Aluminum-magnesium-chromium composite spinel brick
一种铝镁铬复合尖晶石砖
ZHANG YIXIAN (author) / LI CHANGJIANG (author) / ZHAO XIANHUA (author) / MA JIALIANG (author) / JIN ZHAO (author)
2023-10-27
Patent
Electronic Resource
Chinese
| European Patent Office | 2020
Magnesium-manganese-aluminum composite spinel brick and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2024
High adhesion repair material for RH furnace chromium-free magnesium-aluminum spinel brick
| European Patent Office | 2015