冶金工程学院

Light Metals 2015（EI会议）

中文关键字：铝电解，电解膨胀，低温电解，钾冰晶石，经验计算式，等温电解膨胀率图，英文关键字：Aluminum Electrolysis, Electrolysis Expansion, Low

The electrolysis expansion of semi-graphitic cathode blocks was studied in (Na, K) cryolite-alumina melts. A self-made modified Rapoport apparatus was used to study the effects of CR (cryolite ratio) and KR (potassium cryolite content divided by the total amount of potassium cryolite and sodium cryolite) on the expansion. The empirical formula linking CR, KR and expansion was obtained from the experiment results. When CR is in the range between 1.4 and 3.0, KR 0.1 and 0.5，the formula can be used to reveal the relationship between electrolysis expansion of semi-graphitic cathode and melts composition. On this basis, the ternary isotherm diagram refer to electrolysis expansion is also drawn. From this diagram, the electrolysis expansion of semi-graphitic cathode in low temperature electrolyte containing potassium can be directly obtained, which corresponds to the different electrolyte compositions; conversely, the electrolysis expansion of semi-graphitic cathode can be designed as expected through selecting the appropriate CR and KR according to the ternary isotherm diagram. This has some help on choosing the components of low temperature electrolyte containing potassium.

EI检索

KONGHailin,LILinbo,HONGTao

fangzhao

Journal paper

卷：

期：

页：843-848

no

2015-03-01