JSEMAT  Vol.3 No.3 A , September 2013
Determination of Coke, Pitch and Pores/Cracks in Green Anode by Image Analysis
Abstract: Carbon anodes are an essential part of the primary aluminum production. They are made of coal tar pitch, calcined petroleum coke, recycled anodes and butts. As pitch acts as a binder for the anode, its proper distribution in a green anode has a great impact on the properties of the baked anode. Information on cracks in anodes is important for the quality of the baked anode. There is presently no reliable method available to analyze and quantify the amount of coke, pitch and pores/cracks in a green anode sample. In this article, an image analysis technique has been described, that can analyze as well as quantify the area percentage of pores/cracks and weight percentages of pitch and coke. The novelty of the method is its capacity to differentiate the different components of anode.
Cite this paper: Bhattacharyay, D. , Kocaefe, D. , Kocaefe, Y. and Morais, B. (2013) Determination of Coke, Pitch and Pores/Cracks in Green Anode by Image Analysis. Journal of Surface Engineered Materials and Advanced Technology, 3, 1-6. doi: 10.4236/jsemat.2013.33A001.

[1]   E. R. McHenry, J. T. Baron and C. Krupinsci, “Development of Anode Binder Pitch Laboratory Characterization Methods,” Light Metals, 1998, pp. 769-774.

[2]   J. Okada and Y. Takeuchi, “Dependence of the Density and Other Properties of Bonded Carbon on the Binder,” Fourth Conference on Carbon, 1960, pp. 657-669.

[3]   R. W. Peterson and E. J. Seger, “Pitch Control of Prebaked Anodes by Slump Measurement,” Light Metals, 1980, pp. 443-454.

[4]   S. Rorvik, A. P. Ratvik and T. Foosnaes, “Characterization of Green Anode Materials by Image Analysis,” Light Metals, 2006, pp. 553-558.

[5]   S. Rorvik, H. A. Øye and M. Sørlie, “Characterization of Porosity in Cokes by Image Analysis,” Light Metals, 2001, pp. 603-609.

[6]   A. N. Adams, J. P. Mathews and H. H. Schobert, “The Use of Image Analysis for the Optimization of Pre-Baked Anode Formulation,” Light Metals, 2002, pp. 545-552.

[7]   B. A. Sadler, “Diagnosing Anode Quality Problems Using Optical Microscopy,” Light Metals, 2012, pp. 1289-1292.

[8]   G. L. Qiao and S. Eser, “Digital Image Analysis of Optical Texture and Porosity of Petroleum Cokes,” 23rd BiennialConj on Carbon, University Park, Pennsylvania. 1997, pp. 933-937.

[9]   C. Saravanan, “Color Image to Grayscale Image Conversion,” Second International Conference on Computer Engineering and Applications (ICCEA), 2010, pp. 196-199.

[10]   Y. M. Y. Hasan and L. J. Karam, “Morphological Text Extraction from Images,” IEEE Transactions on Image Process, Vol. 9, No. 11, 2000, pp. 1978-1983. doi:10.1109/83.877220

[11]   N. Vanderschantz, C. Timpany, D. Whitehead and W. Carss, “A Small Scale Study into the Effect that Text & Background Colour Has on Processing and Self-Correction Rates for Childrens’ On-Screen Reading,” International Journal of the Book, Vol. 7, No. 4, 2010, pp. 75-88.