Per: Thais Lacerda Marrocos (Hatch), Carlos Alberto Pereira (UFOP), KEROLLAN DA SILVA RAMOS (ITV), Rodrigo Gomes (Samarco), Cézar de Paula Pinheiro (Mineração CSN )
Abstract:
Flotation is a method of concentrating mineral particles that separates the valuable mineral from the gangue minerals, depending on an efficient aeration system. This study aimed to optimize the aeration circuit in the flotation columns of the Central Plant (CSN Mineração) using a new aerator model (SonicSparger Jet). The new aerator was tested in two Rougher columns for six months, with control of air pressure, part wear, replacement and spare parts costs, inspections, calibration, and maintenance, as well as evaluation of concentrate quality, metallurgical recovery, and selectivity index. The results showed less wear, reduced costs and inspection, calibration, and maintenance time, and higher concentrate quality and selectivity index. Thus, the superior performance of the SonicSparger Jet was proven, leading to the decision to acquire these aerators for all columns, aiming for the complete optimization of the circuit.