Utilization of Electrolytic Manganese Residues in Production of Porous Ceramics

作者：Wu, Fang-Fang; Li, Xue-Ping; Zhong, Hong^*; Wang, Shuai^*

来源：International Journal of Applied Ceramic Technology, 2016, 13(3): 511-521.

DOI：10.1111/ijac.12502

• INDUSTRIAL-WASTES
• GLASS-CERAMICS
• KAOLINITE GANGUE
• POROSITY
• TEMPERATURE
• MEMBRANES
• AL(OH)(3)
• MUNICIPAL

Electrolytic manganese residues (EMR) are one of industrial by-products generated during the production of electrolytic manganese metal. To reduce the EMR hazard to environment and invent value-added materials, porous ceramics were prepared by the pore-forming method with EMR and various additives. The influences of the incorporation of different additives, sintering temperature, and molding pressure on properties of porous ceramics were investigated. Properties such as apparent porosity, water absorption, bulk density, and compression strength have been measured. The EMR-based porous ceramics were also characterized by XRD, SEM, BET-specific surface area, and BJH pore size distribution measurement. It revealed that the appropriate mode was the sample containing 20 wt% carbon powder, 7.5 wt% dolomite, and 5 wt% kaoline, under which the ceramics with the properties of high apparent porosity (69.70%), high compressive strength (6.97 MPa), and good acidity-alkali stability were obtained successfully. The comprehensive performance of EMR-based porous ceramics makes them advantageous to use as nonhazardous and valuable materials showing promising potential applications, which not only is a promising new approach to improve the resource utilization of EMR but also can promote the manganese industry's sustainable and healthy development and protect and improve ecological environment.

• 出版日期2016-5
• 单位中南大学