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Preparation method of ultrafine boron carbide powder
The invention belongs to the technical field of special ceramic materials, and particularly relates to a preparation method of ultrafine boron carbide powder. The preparation method of ultrafine boroncarbide powder comprises the following steps: carrying out jet milling promotion crushing on a boron carbide coarse powder pure product to obtain boron carbide fine powder; and purifying the boron carbide fine powder to obtain the ultrafine boron carbide powder; wherein the particle size of the boron carbide coarse powder pure product is less than or equal to 2mm; wherein the median particle sizeof the boron carbide fine powder is less than or equal to 1.5 mu m; wherein the median particle size of the ultrafine boron carbide powder is less than or equal to 0.7 mu m. According to the invention, jet mill promotion crushing is beneficial for improving the crushing ratio and reducing the granularity of the boron carbide powder; only air and boron carbide materials exist in jet mill promotioncrushing, no other crushing medium participates in jet mill promotion crushing, and the purity of boron carbide can be guaranteed. The embodiment shows that the median particle size of the ultrafineboron carbide powder obtained by the preparation method provided by the invention is 0.600-0.622 [mu]m, and the purity of the ultrafine boron carbide powder is 97-97.5%.
本发明属于特种陶瓷材料技术领域，特别涉及一种超细碳化硼粉体的制备方法。本发明提供了一种超细碳化硼粉体的制备方法，包括：将碳化硼粗粉纯品进行气流磨晋级破碎，得到碳化硼细粉；将所述碳化硼细粉进行提纯，得到所述超细碳化硼粉体；所述碳化硼粗粉纯品的粒径≤2mm；所述碳化硼细粉的中值粒径≤1.5μm；所述超细碳化硼粉体的中值粒径≤0.7μm。在本发明中，气流磨晋级破碎有利于提高破碎比，降低碳化硼粉体粒度；气流磨晋级破碎中只有空气和碳化硼物料，无其它粉碎介质参与，有利于保证碳化硼的纯度。实施例表明，由本发明提供的制备方法得到的超细碳化硼粉体的中值粒径为0.600～0.622μm，纯度为97～97.5％。
Preparation method of ultrafine boron carbide powder
The invention belongs to the technical field of special ceramic materials, and particularly relates to a preparation method of ultrafine boron carbide powder. The preparation method of ultrafine boroncarbide powder comprises the following steps: carrying out jet milling promotion crushing on a boron carbide coarse powder pure product to obtain boron carbide fine powder; and purifying the boron carbide fine powder to obtain the ultrafine boron carbide powder; wherein the particle size of the boron carbide coarse powder pure product is less than or equal to 2mm; wherein the median particle sizeof the boron carbide fine powder is less than or equal to 1.5 mu m; wherein the median particle size of the ultrafine boron carbide powder is less than or equal to 0.7 mu m. According to the invention, jet mill promotion crushing is beneficial for improving the crushing ratio and reducing the granularity of the boron carbide powder; only air and boron carbide materials exist in jet mill promotioncrushing, no other crushing medium participates in jet mill promotion crushing, and the purity of boron carbide can be guaranteed. The embodiment shows that the median particle size of the ultrafineboron carbide powder obtained by the preparation method provided by the invention is 0.600-0.622 [mu]m, and the purity of the ultrafine boron carbide powder is 97-97.5%.
本发明属于特种陶瓷材料技术领域，特别涉及一种超细碳化硼粉体的制备方法。本发明提供了一种超细碳化硼粉体的制备方法，包括：将碳化硼粗粉纯品进行气流磨晋级破碎，得到碳化硼细粉；将所述碳化硼细粉进行提纯，得到所述超细碳化硼粉体；所述碳化硼粗粉纯品的粒径≤2mm；所述碳化硼细粉的中值粒径≤1.5μm；所述超细碳化硼粉体的中值粒径≤0.7μm。在本发明中，气流磨晋级破碎有利于提高破碎比，降低碳化硼粉体粒度；气流磨晋级破碎中只有空气和碳化硼物料，无其它粉碎介质参与，有利于保证碳化硼的纯度。实施例表明，由本发明提供的制备方法得到的超细碳化硼粉体的中值粒径为0.600～0.622μm，纯度为97～97.5％。
Preparation method of ultrafine boron carbide powder
一种超细碳化硼粉体的制备方法
WANG ZHENGUO (author) / WANG HONGTAO (author) / LIU JUN (author) / LI PENG (author) / SU YIBO (author) / SONG YING (author)
2020-11-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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