Effect of Titanium Additives on Carbon Anode Reactivity1
Zhiying Lia, b, c, Nianbing Zhangd, and Liangying Wena, *
aCollege of Materials Science and Engineering, Chongqing University, 400044 Chongqing, China
bThe Materials and Metallurgical College, Guizhou University, Guiyang 550003, China
cGuizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guizhou University,
Guiyang 550003, China
dCollege of Material and Civil Engineering, Guizhou Normal University, Guiyang 550001, China
Correspondence to: *e-mail: cquwen@cqu.edu.cn
1The article is published in the original.
Received 25February, 2016
Abstract—In order to ascertain the impact of titanium additives on carbon anode reactivity, different titanium content of carbon anodes were prepared with the single factor experimental method, and test its reactivity in CO2 and air atmosphere respectively. The micro structure of carbon anodes and pitch cokes were tested by XRD. The pyrolysis process of pitch was tested with the TG-DTG method. The results show that the residual rate and chalking rate of carbon anode can also be significantly improved by increasing titanium content. Titanium additives can refine the crystallite size of carbon anode, promote the asphalt carbonization. The titanium additives can increase the apparent activation energy and pitch coke yield of the pyrolysis process, when the titanium content is 1.5%, Ea is 56.405 KJ/ mol, reaction order is 6.4, and the rate of pitch coke yield is 50.5%.
Keywords: carbon anode, pitch coke, titanium additives, CO2 reactivity, air reactivity
DOI: 10.3103/S1067821217030117