Refractories and Industrial Ceramics Vol. 46, No. 6, 2005 REFRACTORIES IN HEAT UNITS UDC 606.76:669.713.7 REFRACTORIES AND CARBON CATHODE MATERIALS FOR THE ALUMINUM INDUSTRY. CHAPTER 2. REFRACTORIES AND CARBON CATHODE BLOCKS FOR ELECTROLYTIC PRODUCTION OF ALUMINUM A. L. Yurkov Translated from Novye Ogneupory, No. 9, pp. 15 – 21, September, 2005. 2.1. PRINCIPLES OF INDUSTRIAL ALUMINUM minum forms a bottom layer (density 2.3 gcm ) and the ELECTROLYSIS. ORGANIZATION electrolyte forms a supernatant layer (about 2.1 gcm ). OF AN ALUMINUM ELECTROLYSIS SHOP. A carbon anode is kept immersed in the electrolyte. The sur- ELECTROLYSIS CELL TYPES face of molten aluminum on the bath bottom serves as a cath- ode. The distance between the surfaces of anode and cathode In the commercial manufacture of aluminum, the electro- (interelectrode spacing) is maintained at a level of 4–6cm. lyte performs three major functions: (i) as a current conduc- An operating electrolysis cell should never be emptied com- tor between the anode and the cathode; (ii) as a solvent for pletely, the metal level should be 25 – 35 cm, and the electro- aluminum oxide, and (iii) as a physical interface between lyte level, 15 – 25 cm. Over the melt (at
Refractories and Industrial Ceramics – Springer Journals
Published: Apr 22, 2006
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