Sedimentation tests with chromium ore fine tailings using different flocculants
Jaciany Mayara Batista Soares; Elenice Maria Schons Silva; André Carlos Silva; Neilton da Silva Tapajós; Pablo Souza de Oliveira; André Figueiredo Nascimento; Ângelo Pereira Vieira Filho; Sirsasana Araujo dos Santos
Abstract
Aqueous routes are of paramount importance in mineral processing. To adjust the solid contents, both concentrates and tailings, must be dewatered. A widely adopted method is the thickening, promoting the free settling of the mineral particles aided by coagulants or flocculants. This study analyzed the performance of different polyacrylamides as flocculants in the sedimentation of chromite tailings. Tests were carried out in graduated cylinders of 2.0 L for different types and dosages of flocculants and pHs. It was possible to make the settling more efficient with the addition of 30 g/t of BASF’s Magnafloc 338 at pH 8.5, decreasing the average pulp turbidity from 740.33 NTU to 31.74 ± 1.16 NTU after a few minutes.
Keywords
Referências
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Submetido em:
08/12/2023
Aceito em:
28/03/2024
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