Tag: Process Integration

Integrated Process Routes for Spent Pot Lining Valorization: From Hazard Detoxification to Closed-Loop Recovery of Fluorides, Carbon, and Refractories

Antonio Clareti Pereira, PhD PhD in Chemical Engineering University of São Paulo (USP) Belo Horizonte, Minas Gerais, Brazil DOI: 10.5281/zenodo.22136771 Spent pot lining (SPL) is simultaneously a hazardous residue and a heterogeneous secondary resource containing carbon, fluoride-bearing electrolyte, sodium, aluminum, Read More …

From Ferrous Sulfate Waste to Fertilizer and Metal Powder: Thermodynamics, Process Integration, and Circular Economy Opportunities for Dual-Product Recovery

Antonio Clareti Pereira* PhD in Chemical Engineering São Paulo University – USP Belo Horizonte – MG – Brazil DOI: 10.5281/zenodo.20596981 Ferrous sulfate is produced in large quantities by hydrometallurgical operations, steel pickling, titanium dioxide manufacturing, acid regeneration circuits, and several Read More …