Behavior of Quartz and Carbon Black Pellets at Elevated Temperatures

This paper studies the quartz and carbon black pellets at elevated temperature with varying temperature and gas atmosphere. High-purity quartz and commercial ultra-pure carbon black was mixed (carbon content wt. 15%), and then pelletized into particles of 1–3mm in diameter. The stoichiometric analysis of the pellet during heating is studied in thermogravimetric analysis (TGA) furnace at different temperature in CO and Ar atmosphere. The microstructure, phase changes and element content of sample before/after heating is characterized by X-ray diffraction, scanning electron microscope, X-ray fluorescence and LECO analyzer. The reaction process can be divided into two stages. Higher temperature and argon atmosphere are the positive parameters for SiC formation.

References

Schei, A, Tuset, J. K. and Tveit, H, Production of High Silicon Alloys (Trondheim: Tapir Forlag, 1998), 25–72.
Google Scholar
M. Tangstad, Metal Production in Norway (Trondheim: Akademika Forlag, 2013), 97–120.
Google Scholar
J. J. Biernacki, " Formation of Silicon Monoxide and Application to the Growth of Vapor-Liquid-So1id Silicon Carbide Whiskers", (Doctoral Dissertation, Fenn College of Engineering, Cleveland State University, Cleveland, Ohio, 1987), 378.
Google Scholar
Agrarwal and U. Pal, “Influence of pellet composition and structure on carbothermic reduction of silica”, Metall Mater Trans B, 30 (1999), 295–306.
10.1007/s11663-999-0059-9
Web of Science® Google Scholar
Xiang Li, Guangqing Zhang, Kai Tang, Oleg Ostrovski and Ragnar Tronstad, "Carbothermal Reduction of Quartz in Different Gas Atmospheres", Metall Mater Trans B, 46(3), 2015, 1343–1352.
10.1007/s11663-015-0293-2
CAS Web of Science® Google Scholar
Selvam, ND. Nair, Paramanand Singh, "Synthesis and characterization of SiC whiskers from coconut shells", Journal of Materials Science letters, (17) 1998, 57–60.
Google Scholar
Rasit Koc, Sai V Cattamanchi, "Synthesis of beta silicon carbide powders using carbon coated fumed silica". Journal of Materials Science. (10)33, 1998, 2537–2549.
10.1023/A:1004392900267
Web of Science® Google Scholar
Yung-Jen Lin, Chia-Ping Tsang, "The effects of starting precursors on the carbothermal synthesis of SiC powders", Ceramics International, 1(29), 2003, 69–75.
10.1016/S0272-8842(02)00091-3
Web of Science® Google Scholar
Jianfeng Yao, Huanting Wang, Xinyi Zhang, Wei Zhu, Jinping Wei, and Yi-Bing Cheng, "Role of Pores in the Carbothermal Reduction of Carbon-Silica Nanocomposites into Silicon Carbide Nanostructures", J. Phys. Chem. C, 111(2), 2007, 636–641.
10.1021/jp0650984
CAS Web of Science® Google Scholar

2016 EPD Congress