Produção de cadinho de alumina a partir de borra de alumínio do processo HALL-HÉROULT com vistas à fusão de ligas metálicas em forno de indução

Abstract

In the primary aluminum production process, that is, in the Hall-Héroult process, a residue is generated, known as aluminum sludge. As it conserves high melting point oxides, it is a potential input in the production of refractories. The objective of this work is to manufacture a refractory crucible larger greater in dimensions and volumetric capacity than previous works carried out at the UFC Foundry Laboratory, using aluminum sludge and cane molasses as a binder, aiming to use it in the induction furnace to melt metal alloys, being necessary that has specific properties, in particular mechanical, abrasion and thermal shock resistance. Larger crucibles were produced, and the crucible production process was improved, considering the behavior of cane molasses at high temperatures, and modifying the molding step, making its manufacture easier. It was concluded that the larger crucible produced with aluminum sludge and cane molasses is viable for use in an induction furnace, allowing the production of larger castings, with a simpler crucible production process.