An Investigation of Reverse Flotation Separation of Sericite from Graphite by Using a Surfactant: MF

Abstract

Abstract:In this paper, a surfactant, atlox4862 (formaldehyde condensate of methyl naphthalene sulfonic sodium salt) (MF), was introduced as a depressant for reverse flotation separation of sericite from graphite. Natural flake graphite has a strong hydrophobic property. After interacting with MF, the graphite became moderately hydrophilic. The flotation results showed that MF had a depressing ability for both sericite and graphite and that the flotation separation of sericite from graphite was attributed to the different declining levels of recovery between graphite and sericite with increased MF concentration. For a pulp pH of 8 and a MF concentration of 250 mg/L, the recovery rates of sericite and graphite were 89.7% and 11.3%, respectively. The results of the FTIR spectra and zeta potential measurements demonstrated that the interaction of MF with graphite and sericite is mainly through electrostatic attraction. MF was preferred to adsorb on the surface of graphite, decreasing its zeta potential and improving its hydrophilicity more than that of sericite.

The Influence of Permanganate Enhancement to Graphite on Chemical Structure and Properties of Graphene Oxide Material Generated by Improved Tour Method

“…This corresponds to graphite standards on ICDD (International Centre for Diffraction Data) of 01-075-1621. The peak of plane 002 indicates the aromatic conjugated-carbon bond [18] with layered structures. Due to this nature, the presence of plane 002 is used widely to monitor the conversion of graphite into GO material.…”

Changes on the Surface of the SiO2/C Composite, Leading to the Formation of Conductive Carbon Structures with Complex Nature of DC Conductivity

“…An FTIR analysis in ATR mode was performed to investigate the evolution of the silica network upon different temperature treatments. Only the layer sintered at 800 °C exhibits transmittance, which is characteristic for graphitic forms of carbon; no signs of silica were observed ( Figure 3 ) [ 28 ]. The spectra of the samples sintered at 600 °C and 1000 °C show absorption bands, which is characteristic for silica materials.…”

Preserving Flake Size in an African Flake Graphite Ore Beneficiation Using a Modified Grinding and Pre-Screening Process

“…Due to the strong floatability of graphite, flotation is the most commonly used method of graphite beneficiation. Among them, crystalline flake graphite has the best floatability, followed by vein graphite; amorphous graphite has the poorest floatability [3,[6][7][8][9][10]. Therefore, flake graphite can be easily purified by flotation.…”