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Heavy high-purity calcium hexaluminate refractory raw material and preparation method thereof
The invention relates to a heavy high-purity calcium hexaluminate refractory raw material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: uniformly mixing 90-92 parts by mass of aluminum-containing fine powder and 8-10 parts by mass of calcium-containing fine powder to obtain a mixture; carrying out heat preservation on the mixture for 1-3 hours at the temperature of 1100-1300 DEG C, so as to obtain a pre-sintered green body; crushing and screening the pre-sintered green body to obtain a pre-sintered material with the particle size of less than 50 microns; adding 1-2 parts by mass of a composite conditioning agent into the pre-sintered material, uniformly stirring, and carrying out compression molding under the condition of 100-150MPa to obtain a compression molded blank; and carrying out heat preservation on the pressed and molded green body at 1550-1750 DEG C for 1-5 hours to prepare the heavy high-purity calcium hexaluminate refractory raw material. The heavy high-purity calcium hexaluminate refractory raw material prepared by the invention has the characteristics of low apparent porosity, high relative density, high purity and strong slag infiltration resistance.
本发明涉及一种重质高纯六铝酸钙耐火原料及其制备方法。其技术方案是：将90～92质量份的含铝细粉和8～10质量份的含钙细粉混合均匀，得到混合料；将所述混合料在1100～1300℃条件下保温1～3小时，得到预烧后的坯体；将所述预烧后的坯体破碎，筛分，得到粒度小于50μm的预烧料；然后向所述预烧料中加入1～2质量份的复合调质剂，搅拌均匀，在100～150MPa的条件下压制成型，得到压制成型的坯体；将所述压制成型的坯体在1550～1750℃条件下保温1～5小时，制得重质高纯六铝酸钙耐火原料。本发明制备的重质高纯六铝酸钙耐火原料具有显气孔率低、相对密度高、纯度高和抗熔渣渗透能力强的特点。
Heavy high-purity calcium hexaluminate refractory raw material and preparation method thereof
The invention relates to a heavy high-purity calcium hexaluminate refractory raw material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: uniformly mixing 90-92 parts by mass of aluminum-containing fine powder and 8-10 parts by mass of calcium-containing fine powder to obtain a mixture; carrying out heat preservation on the mixture for 1-3 hours at the temperature of 1100-1300 DEG C, so as to obtain a pre-sintered green body; crushing and screening the pre-sintered green body to obtain a pre-sintered material with the particle size of less than 50 microns; adding 1-2 parts by mass of a composite conditioning agent into the pre-sintered material, uniformly stirring, and carrying out compression molding under the condition of 100-150MPa to obtain a compression molded blank; and carrying out heat preservation on the pressed and molded green body at 1550-1750 DEG C for 1-5 hours to prepare the heavy high-purity calcium hexaluminate refractory raw material. The heavy high-purity calcium hexaluminate refractory raw material prepared by the invention has the characteristics of low apparent porosity, high relative density, high purity and strong slag infiltration resistance.
本发明涉及一种重质高纯六铝酸钙耐火原料及其制备方法。其技术方案是：将90～92质量份的含铝细粉和8～10质量份的含钙细粉混合均匀，得到混合料；将所述混合料在1100～1300℃条件下保温1～3小时，得到预烧后的坯体；将所述预烧后的坯体破碎，筛分，得到粒度小于50μm的预烧料；然后向所述预烧料中加入1～2质量份的复合调质剂，搅拌均匀，在100～150MPa的条件下压制成型，得到压制成型的坯体；将所述压制成型的坯体在1550～1750℃条件下保温1～5小时，制得重质高纯六铝酸钙耐火原料。本发明制备的重质高纯六铝酸钙耐火原料具有显气孔率低、相对密度高、纯度高和抗熔渣渗透能力强的特点。
Heavy high-purity calcium hexaluminate refractory raw material and preparation method thereof
一种重质高纯六铝酸钙耐火原料及其制备方法
GU HUAZHI (author) / LIU NING (author) / FU LYUPING (author) / HE JIAN (author) / HUANG AO (author) / LYU XUSHENG (author) / ZHANG MEIJIE (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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