|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Effect of Carbon Dust on the Electrical Resistivity of Cryolite Bath
||Louis Bugnion, Jean-Claude Fischer
|On-Site Speaker (Planned)
For many years anode dusting has been an issue for aluminum producers. Suspended carbon particles enhance the electrical resistivity of the cryolite bath, setting off a chain reaction of adverse effects for the pot. Many studies have documented the negative influence of carbon dust on current efficiency or bath temperature which are indirect effects of contaminated bath. The dependence of bath resistivity on the amount and on the size of carbon particles is poorly understood though. Tube-type cell experiments were performed to determine the electrical resistivity at 960 °C of standard bath mixtures added with carbon dust. The carbon content ranged from 0.01 to 1% in weight with mean particle size of 2 and 20 µm. The objective is to quantify the change in ACD which may result from a variation of bath resistivity related to anode dusting.
||Planned: Light Metals Volume