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A platform for research: civil engineering, architecture and urbanism
Alumina-based coagulant for refractory castable as well as preparation method and application of alumina-based coagulant
The invention discloses an alumina-based coagulant for refractory castable, which is prepared by the following steps: with industrial alumina as a main raw material, calcining at a high temperature of 900-1100 DEG C, cooling to a room temperature state to obtain alumina raw powder with high specific surface area, adding propylene glycol as a grinding aid, and performing dry grinding by adopting a ball milling process to obtain alumina micro powder with high specific surface area. The invention also discloses an application of the alumina-based coagulant as a coagulant of a pure calcium aluminate cement combined refractory castable, and the use amount of the alumina-based coagulant is 0.1-1.5% of the mass of the refractory castable. The alumina-based coagulant provided by the invention solves the problem of slow coagulation of refractory castable in a low-temperature environment, the addition amount of the coagulant is moderate, the coagulant effect is very obvious in the low-temperature environment of 5 DEG C, the coagulation time of the castable can be remarkably shortened, and no impurity is introduced into the refractory castable.
本发明公开了一种耐火浇注料用氧化铝基促凝剂，它是以工业氧化铝为主要原材料，先采用900～1100℃高温煅烧、冷却至室温状态得到高比表面积的氧化铝原粉，再加入丙二醇作为助磨剂，采用球磨工艺进行干法研磨，得到高比表面积的氧化铝微粉。本发明还公开了所述的氧化铝基促凝剂在作为纯铝酸钙水泥结合耐火浇注料的促凝剂的应用，氧化铝基促凝剂的用量为耐火浇注料质量的0.1％～1.5％。本发明所述的氧化铝基促凝剂解决了耐火浇注料低温环境下凝结慢的问题，促凝剂加入量适中，在5℃低温环境下，促凝效果非常明显，能够显著缩短浇注料的凝结时间，且不为耐火浇注料引入杂质。
Alumina-based coagulant for refractory castable as well as preparation method and application of alumina-based coagulant
The invention discloses an alumina-based coagulant for refractory castable, which is prepared by the following steps: with industrial alumina as a main raw material, calcining at a high temperature of 900-1100 DEG C, cooling to a room temperature state to obtain alumina raw powder with high specific surface area, adding propylene glycol as a grinding aid, and performing dry grinding by adopting a ball milling process to obtain alumina micro powder with high specific surface area. The invention also discloses an application of the alumina-based coagulant as a coagulant of a pure calcium aluminate cement combined refractory castable, and the use amount of the alumina-based coagulant is 0.1-1.5% of the mass of the refractory castable. The alumina-based coagulant provided by the invention solves the problem of slow coagulation of refractory castable in a low-temperature environment, the addition amount of the coagulant is moderate, the coagulant effect is very obvious in the low-temperature environment of 5 DEG C, the coagulation time of the castable can be remarkably shortened, and no impurity is introduced into the refractory castable.
本发明公开了一种耐火浇注料用氧化铝基促凝剂，它是以工业氧化铝为主要原材料，先采用900～1100℃高温煅烧、冷却至室温状态得到高比表面积的氧化铝原粉，再加入丙二醇作为助磨剂，采用球磨工艺进行干法研磨，得到高比表面积的氧化铝微粉。本发明还公开了所述的氧化铝基促凝剂在作为纯铝酸钙水泥结合耐火浇注料的促凝剂的应用，氧化铝基促凝剂的用量为耐火浇注料质量的0.1％～1.5％。本发明所述的氧化铝基促凝剂解决了耐火浇注料低温环境下凝结慢的问题，促凝剂加入量适中，在5℃低温环境下，促凝效果非常明显，能够显著缩短浇注料的凝结时间，且不为耐火浇注料引入杂质。
Alumina-based coagulant for refractory castable as well as preparation method and application of alumina-based coagulant
一种耐火浇注料用氧化铝基促凝剂及其制备方法与应用
ZHANG LANYIN (author)
2021-06-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Preparation method and application of coagulant for cement combined castable
| European Patent Office | 2024