Foundation Research on Physicochemical Properties of Mine Insulation Materials

• Main Authors: Chuanbin Hou, Song Xin, Long Zhang, Shangxiao Liu, Xiao Zhang
• Format: Article
• Language: English
• Published: MDPI AG 2020-04-01
• Series: Coatings
• Subjects: mine cooling; insulation materials; basalt fiber; thermal conductivity; compressive strength; COMSOL
• Online Access: https://www.mdpi.com/2079-6412/10/4/355

The known cooling methods for the high-temperature operating environment of a mine mainly include ventilation, refrigeration, heat insulation, and individual protection. Among them, the superior performance and wide application of the heat insulation materials have attracted the attention of the coal mining industry. In this paper, three types of mineral insulation materials were prepared using basalt fiber, glass fiber, vitrified microbeads in combination with cement, sand, high-strength ceramsite, water, etc. In addition, the thermal conductivity and compressive strength of the prepared specimens were assessed. The results show that the test specimen containing basalt fiber had a great thermal insulation effect and achieved the required compressive strength. Furthermore, according to the COMSOL simulation results, the test specimen containing basalt fiber had a better thermal insulation effect than the ordinary concrete materials. Therefore, the research results of this article have guiding significance to search for new mine thermal insulation materials.