Microflotation of Fine Rutile and Garnet with Different Particle Size Fractions

In this paper, −10 μm rutile and −30 μm garnet particles were selected as samples. The effects of different reagents on the flotation of rutile and garnet single minerals were studied, and the mechanism was analyzed by the contact angle, zeta potential, and Fourier transform infrared (FTIR) measurements. The flotation results show that an optimal recovery is obtained with benzohydroxamic acid (BHA) as the collector for rutile and sodium silicofluoride (SSF) as the inhibitor for garnet. Even with BHA having a good collecting performance for both rutile and garnet, there are still some differences. BHA greatly improves the hydrophobicity of rutile and garnet, and changes the chemical environment of rutile but not garnet. SSF significantly reduces the hydrophobicity of rutile and garnet, and slightly affects the environment in which BHA interacts with rutile. However, the above reagents and combinations have little effect on the surface chemical environment of garnet

Influence of Microbubble on Fine Wolframite Flotation

The recovery of fine wolframite is low when using traditional flotation that does not use a microbubble. In this study, a microbubble was introduced into the fine wolframite flotation system; −20 μm wolframite was used as an experiment sample and octyl hydroxamic acid as the collector. The recovery of microbubble flotation reached 84.07%, which is about 12.04% higher than that of traditional flotation. A single-factor flotation experiment, high-speed camera analysis, and SEM (Scanning Electron Microscopy) analysis were used to study the influence of microbubbles on the flotation of fine wolframite. The results show that fine wolframite will more easily agglomerate under the action of microbubbles. The octyl hydroxamic acid adsorbed on the surface of wolframite treated with microbubbles is denser and more abundant

Microflotation of Fine Rutile and Garnet with Different Particle Size Fractions

In this paper, −10 μm rutile and −30 μm garnet particles were selected as samples. The effects of different reagents on the flotation of rutile and garnet single minerals were studied, and the mechanism was analyzed by the contact angle, zeta potential, and Fourier transform infrared (FTIR) measurements. The flotation results show that an optimal recovery is obtained with benzohydroxamic acid (BHA) as the collector for rutile and sodium silicofluoride (SSF) as the inhibitor for garnet. Even with BHA having a good collecting performance for both rutile and garnet, there are still some differences. BHA greatly improves the hydrophobicity of rutile and garnet, and changes the chemical environment of rutile but not garnet. SSF significantly reduces the hydrophobicity of rutile and garnet, and slightly affects the environment in which BHA interacts with rutile. However, the above reagents and combinations have little effect on the surface chemical environment of garnet

Adhesion between nanobubbles and fine cassiterite particles

Adhesion is an important process of particle-bubble interaction in fine particle (−10 μm) flotation. This paper studied the adhesion process and mechanism between nanobubbles and fine cassiterite particles by using a high-speed camera, atomic force microscope (AFM), adsorption capacity tests, and induction time tests. After being pretreated with nanobubbles (NBs) water, fine cassiterite particles flotation tests were carried out using caprylhydroxamic acid (CHA) as a collector. The results showed that NBs can improve the recovery and flotation rate of fine cassiterite while decreasing the collector dosage. The adsorption capacity test indicated that the cassiterite treated with NBs had lower demand for collector concentration. The AFM imaging results further demonstrate that NBs could reduce the adsorption of CHA on the surface of minerals. Since NBs played a part of the role of collector, it can improve the flotation effect while reducing the amount of collector. The induction time test and the high-speed camera observation test showed that NBs promoted the attachment between bubbles and cassiterite particles. On the other hand, NBs agglomerate cassiterite particles, increasing the probability of particles colliding with bubbles

Effects of bubble size, velocity, and particle agglomeration on the electro-flotation kinetics of fine cassiterite

Hydrodynamic behavior of fine particles and bubbles and their influences on the particle–bubble collision efficiency (E) in an electro-flotation system were analyzed in this study. The influence of sodium oleate on the agglomeration of cassiterite particles and the effect of electrolyte (NaSO) concentration on the zeta potential of cassiterite were investigated in detail, respectively. Bubble trajectory was recorded by using a high-speed camera to investigate the dynamic process in terms of bubble velocity. Moreover, bubble size was taken into account in the determination of the relationship between bubble velocity and E. The Reynolds number (Re) was calculated to be 4.77 for hydrogen (H) bubbles with a mean diameter of 52\ua0μm. The highest recovery of cassiterite particles

original data and description

data tool and description, especially xps fitting process

Original data and description

Data tool and description, including xps fitting process

Influences of Grinding on the Classification and Enrichment of Vanadium in Stone Coal

Grinding, as an important preparation step for beneficiation is very necessary to study for the finely disseminated extent, vanadium-bearing stone coal with complex chemical composition. In this paper, grinding medium, time, degree and monomer dissociation degree were investigated in detail. The results show that the efficiency of rod milling is better than that of ball milling, especially the proportion of −0.038 mm size fraction obtained by rod milling is 10.89% higher than ball milling. The grinding degree of 8 min rod mill is −74 µm 73.19%, then the proportion of monomer is 70.68%. MLA measurement shows that roscoelite can not be dissociated by fine grinding. Vanadium concentrate with 0.97% of the grade and 89.88% of recovery was obtained by classification and shaking table technology. Tailing rate is 18.82%. The enrichment of vanadium can be realized by reasonable grinding and classification