Effect of Ether Mono Amine Collector on the Cationic Flotation of Micaceous Minerals—A Comparative Study

Abstract

Micaceous minerals, known as layer silicates, are counted mostly as the gangue minerals associated with valuable minerals, especially iron oxides. They mainly reject through the reverse flotation process using the cationic collectors, e.g., ether amines, to improve process sustainability. Although ether amines have been applied for floating the wide range of silicates, few investigations explored their adsorption behaviors on the micaceous minerals. In this study, flotation of phlogopite, biotite, and quartz (for comparison purposes) in the presence of Flotigam®EDA (EDA) (commercial ether monoamine collector), at pH 10 was investigated through the single mineral micro–flotation experiments. Adsorption behaviors were explored by the contact angle, residual surface tension measurements, and zeta potential analyses. Micro–flotation outcomes indicated that the quartz floatability was more than phlogopite and biotite. In the presence of 30 mg/dm3 EDA, their recoveries were 97.1, 46.3, and 63.8%, respectively. Increasing EDA concentration made a substantial increase in micaceous minerals’ floatability. Adsorption assessments confirmed that increasing the EDA concentration resulted in higher adsorption of EDA onto the surface of micaceous minerals than the quartz (all by physical adsorption). Such a behavior could be related to the nature of micaceous minerals, including their layer structure and low hardness.

Exploring the effect of a polyacrylic acid-based grinding aid on magnetite-quartz flotation separation

“…4a). The observed increase in the floatability of quartz in the presence of Lilaflot 822 M (an ether amine) corroborates with the literature findings showing amine's efficacy at pH 10 [48,49]. Quartz recovery reached a maximum of 90 % at 20 mg/L of the collector in the absence of AAG, while it would be 92 % at 10 mg/L of the collector in the presence of AAG.…”

3D-printed flexible energy harvesting devices designed using non-layered two-dimensional natural tourmaline silicates

“…For the exfoliated T-silicate, the potential is −30 mV, which suggests a negative charge on the exfoliated sheets. Zeta potentials of graphene, 27 hBN, 28 MoS 2 , 29 2D black phosphorus, 27 2D spinel oxide, 30 and 2D layered silicates such as mica 31 and biotite 32 were compared with those of non-layered 2D T-silicates reported in this work.…”

A comprehensive review of atomically thin silicates and their applications

“…It is evident that 2D silicates have higher stiffness values [45] than black phosphorus [46], silicene [47], and WSe 2 but lower than MoS 2 [48], graphene [49], and hBN [50]. The zeta potential values (stability in suspension and charge) are negative for 2D silicates [51,52] and larger than the corresponding values for the majority of 2D materials [53][54][55][56], as shown in figure 2(d). The magnetic property chart in figure 2(e) indicates that natural silicates in 2D configurations are predominantly paramagnetic, but ferromagnetic (FM) behavior is possible if combined with appropriate elements [57].…”