Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mullite lightweight refractory material and preparation method thereof
The invention relates to a mullite lightweight refractory material and a preparation method of the mullite lightweight refractory material. The invention adopts the technical scheme that the method comprises the steps of preparing materials under a 40-55 DEG C water bath condition according to a mass ratio of an AC (azodicarbonamide) foaming agent to polyethylene glycol 400 to ammonium bicarbonate to water of 1:(2-5):(1-4):(80-120), stirring, preparing foaming liquid, preparing materials at a mass ratio of the foaming liquid to rho-Al2O3 to gangue powder of (50-60):(1-3):100, stirring, forming to prepare a formed mixture, putting the formed mixture in a vacuum freeze drier for freeze drying for 72-84h, preparing a dried formed mixture, putting the dried formed mixture in a resistance furnace, holding temperature at 1280-1400DEG C for 45-50min, naturally cooling with the furnace, and obtaining the mullite lightweight refractory material. The method has the characteristics of low cost, simple technology and high finished product rate, and the prepared mullite lightweight refractory material is low in volume density, high in cold crushing strength and low in heat conductivity coefficient.
Mullite lightweight refractory material and preparation method thereof
The invention relates to a mullite lightweight refractory material and a preparation method of the mullite lightweight refractory material. The invention adopts the technical scheme that the method comprises the steps of preparing materials under a 40-55 DEG C water bath condition according to a mass ratio of an AC (azodicarbonamide) foaming agent to polyethylene glycol 400 to ammonium bicarbonate to water of 1:(2-5):(1-4):(80-120), stirring, preparing foaming liquid, preparing materials at a mass ratio of the foaming liquid to rho-Al2O3 to gangue powder of (50-60):(1-3):100, stirring, forming to prepare a formed mixture, putting the formed mixture in a vacuum freeze drier for freeze drying for 72-84h, preparing a dried formed mixture, putting the dried formed mixture in a resistance furnace, holding temperature at 1280-1400DEG C for 45-50min, naturally cooling with the furnace, and obtaining the mullite lightweight refractory material. The method has the characteristics of low cost, simple technology and high finished product rate, and the prepared mullite lightweight refractory material is low in volume density, high in cold crushing strength and low in heat conductivity coefficient.
Mullite lightweight refractory material and preparation method thereof
ZHANG HAN (Autor:in) / ZHAO HUIZHONG (Autor:in) / HE QING (Autor:in) / LI JINGJIE (Autor:in) / XIN ZHAOPENG (Autor:in) / LIU ZHIQIANG (Autor:in) / YU JUN (Autor:in) / NIE JIANHUA (Autor:in)
22.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Novel energy-saving lightweight mullite refractory material and preparation method thereof
| Europäisches Patentamt | 2021
Highly refractory fiber reinforced mullite lightweight refractory material
| Europäisches Patentamt | 2016
Method for preparing mullite refractory material and mullite refractory material
| Europäisches Patentamt | 2023
Composite spinel mullite ceramic refractory material and preparation method thereof
| Europäisches Patentamt | 2021
Mullite insulating refractory brick and preparation method thereof
| Europäisches Patentamt | 2020