Primary aluminium is defined in the IAI production statistics as liquid aluminium tapped from electrolytic cells or pots during the electrolytic reduction of metallurgical alumina (aluminium oxide). It thus excludes alloying and scraps additions in cast metal production. While this data does not fully represent a primary ingot (i.e., excluding ...

Primary aluminium is defined in the IAI production statistics as liquid aluminium tapped from electrolytic cells or pots during the electrolytic reduction of metallurgical alumina (aluminium oxide). It thus excludes alloying and scraps additions in cast metal production. While this data does not fully represent a primary ingot (i.e., excluding ...

Perfluorocarbons (PFCs) can be produced in the primary aluminium reduction process, during events referred to as anode effects. An anode effect is a process upset condition, where an insufficient amount of alumina is dissolved in the electrolyte bath. ...

Energy used in metallurgical alumina production is energy consumed within the plant perimeter by bauxite refining processes (including calcination) and by those auxiliary operations on site which are directly connected with the total production process. ...

Electrical power used in primary aluminium production includes power used for electrolysis by the Hall-Héroult processes (including rectification from AC to DC) and normal smelter auxiliaries (including pollution control equipment) up to the point where the liquid aluminium is tapped from the pots. It excludes power used in casting and ...

Total alumina production is the quantity of aluminium oxide trihydrate produced in a defined period and expressed as 100%, nominal aluminium oxide (Al2O3) equivalent, irrespective of further processing. Total alumina production figures have two components, that to be used for the production of aluminium (metallurgical grade alumina) and that to ...

Calculation of GHG emissions replies on the regularly collected life cycle inventory (LCI) from global aluminium industry by the International Aluminium Institute (IAI). ...

Accurate and consistent statistical performance data on lead indicators are collected annually from Safety Correspondents at all participating companies. The results make it possible to compare safety performance and hence provide motivation towards continuous improvement and assist in the quest to eliminate all accidents from the workplace. ...

Fluoride emissions, in the form of gaseous hydrogen fluoride and sodium and aluminium fluorides and unused cryolite as particulates, are the major undesirable fume component produced in the aluminium smelting process. Such emissions can be reduced through the use of fume control systems, operational good practice and improved technology. ...