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High-thermal-conductivity ultra-microporous electrically calcined coal-based carbon brick and preparation method thereof
The invention relates to a high-thermal-conductivity ultramicropore electrically calcined coal-based carbon brick and a preparation method thereof. The preparation method comprises the following steps: introducing catalyst-loaded carbon microspheres in a carbon brick preparation process, taking a waste cane sugar solution as a carbon source, mixing the waste cane sugar solution with a surfactant to form a uniform solution, preparing carbon microspheres rich in different functional groups by adopting a hydrothermal carbonization method, uniformly dispersing the carbon microspheres in a transition metal salt solution, putting the carbon microspheres in a constant-temperature water bath kettle, and carrying out equivalent-volume impregnation adsorption. And drying to obtain the catalyst-loaded carbon microspheres. The electrically calcined coal aggregate, the fine powder, the carbon microspheres loaded with the catalyst and a binding agent are mixed according to a certain proportion, then molded and dried, and finally fired under the condition of high temperature, and in the process, the carbon microspheres are converted into the porous graphite microspheres in situ, so that the porous graphite microspheres are obtained. The catalyst loaded on the surface can catalyze a binding agent and additives such as silicon powder/aluminum powder to form ceramic whiskers such as carbon nanotubes and silicon carbide/aluminum carbide, a graphite carbon-ceramic phase heterogeneous network structure is jointly constructed, the average pore size of the carbon brick is reduced, and the density and the heat-conducting property of the carbon brick are improved.
本发明涉及一种高导热超微孔电煅煤基炭砖及其制备方法。在炭砖制备过程中引入负载催化剂的碳微球，以废蔗糖液为碳源，与表面活性剂混合成均匀溶液，采用水热碳化法制备富含不同官能团的碳微球，并将其均匀分散在过渡金属盐溶液中，置于恒温水浴锅中进行等体积浸渍吸附，干燥后得到负载催化剂的碳微球。再将电煅煤骨料、细粉、负载催化剂的碳微球及结合剂按照一定配比混合后成型干燥，最后在高温的条件下烧制而成，在此过程中，碳微球原位转化为多孔石墨微球，且其表面负载的催化剂可催化结合剂和添加剂硅粉/铝粉等形成碳纳米管、碳化硅/碳化铝等陶瓷晶须，共同构筑石墨碳‑陶瓷相异质网络结构，减小炭砖的平均孔径，提高其致密度及导热性能。
High-thermal-conductivity ultra-microporous electrically calcined coal-based carbon brick and preparation method thereof
The invention relates to a high-thermal-conductivity ultramicropore electrically calcined coal-based carbon brick and a preparation method thereof. The preparation method comprises the following steps: introducing catalyst-loaded carbon microspheres in a carbon brick preparation process, taking a waste cane sugar solution as a carbon source, mixing the waste cane sugar solution with a surfactant to form a uniform solution, preparing carbon microspheres rich in different functional groups by adopting a hydrothermal carbonization method, uniformly dispersing the carbon microspheres in a transition metal salt solution, putting the carbon microspheres in a constant-temperature water bath kettle, and carrying out equivalent-volume impregnation adsorption. And drying to obtain the catalyst-loaded carbon microspheres. The electrically calcined coal aggregate, the fine powder, the carbon microspheres loaded with the catalyst and a binding agent are mixed according to a certain proportion, then molded and dried, and finally fired under the condition of high temperature, and in the process, the carbon microspheres are converted into the porous graphite microspheres in situ, so that the porous graphite microspheres are obtained. The catalyst loaded on the surface can catalyze a binding agent and additives such as silicon powder/aluminum powder to form ceramic whiskers such as carbon nanotubes and silicon carbide/aluminum carbide, a graphite carbon-ceramic phase heterogeneous network structure is jointly constructed, the average pore size of the carbon brick is reduced, and the density and the heat-conducting property of the carbon brick are improved.
本发明涉及一种高导热超微孔电煅煤基炭砖及其制备方法。在炭砖制备过程中引入负载催化剂的碳微球，以废蔗糖液为碳源，与表面活性剂混合成均匀溶液，采用水热碳化法制备富含不同官能团的碳微球，并将其均匀分散在过渡金属盐溶液中，置于恒温水浴锅中进行等体积浸渍吸附，干燥后得到负载催化剂的碳微球。再将电煅煤骨料、细粉、负载催化剂的碳微球及结合剂按照一定配比混合后成型干燥，最后在高温的条件下烧制而成，在此过程中，碳微球原位转化为多孔石墨微球，且其表面负载的催化剂可催化结合剂和添加剂硅粉/铝粉等形成碳纳米管、碳化硅/碳化铝等陶瓷晶须，共同构筑石墨碳‑陶瓷相异质网络结构，减小炭砖的平均孔径，提高其致密度及导热性能。
High-thermal-conductivity ultra-microporous electrically calcined coal-based carbon brick and preparation method thereof
一种高导热超微孔电煅煤基炭砖及其制备方法
LI SAISAI (author) / WU QIANFANG (author) / LI MINGHUI (author) / CHANG BING (author)
2022-12-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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