用超内燃制砖技术解决煤系高岭土“煅烧脱碳”的初步实验分析  

Experimental analysis on solving“calcination and decarburization”of coal-kaolin by super internal combustion brick-making technology

作　　者：闫开放[1] YAN Kai-fang

机构地区：[1]中国建材咸阳陶瓷研究设计院,陕西咸阳712000

出　　处：《砖瓦》2022年第10期23-27,共5页Brick-tile

摘　　要：煤矸石是煤炭开采过程中排出的固体废弃物,将成分适宜的煤矸石进行“煅烧脱碳”后再进行深加工二次煅烧制成高岭土,成为陶瓷、耐火材料的主要原料。高质量的煤系高岭土还可用于造纸工业、生物医药、高级涂料、国防军工和特殊材料领域。由于煤系高岭土煅烧脱碳周期长或脱碳不完全,影响高岭土产能和白度。为此,研究利用煤矸石砖生产工艺和焙烧原理来完成煤系高岭土工艺中的“煅烧脱碳”主要工序,显得尤为重要。经实验取得了一些数据,并借鉴砖瓦内燃或超内燃烧砖的理论和成功实践进行了研究分析,提出了几点建议,供行业同仁共同探讨。Due to the long decarburization cycle or incomplete decarburization of coal-kaolin,the productivity and whiteness of kaolin will be affected.Therefore,it is particularly important to study the use of coal gangue brick production technology and firing principle to complete the main process of“calcination and decarbon⁃ization”in the coal-kaolin process.Some data are obtained through experiments,and the theory and success⁃ful practice of internal combustion bricks or super internal combustion bricks are used for research and analy⁃sis,and some suggestions are put forward for discussion by colleagues in the industry.

关 键 词：煤系高岭土 煅烧脱碳 超内燃烧砖 

分 类 号：TU522.06[建筑科学—建筑技术科学]