Effective monitoring and control of a mineral flotation process necessitates accurate and rapid on-line analysis of the slurry flows. Recent development of lightweight and low-cost visible and near-infrared (VNIR) imaging spectrographs has provided new interesting possibilities also in mineral froth and slurry analysis. The intelligent combination of VNIR reflectance spectroscopy with the tradi...

We characterize the late-time scaling state of dry, coarsening, two-dimensional froths using a detailed force-based dynamical model. We find that the slow evolution of bubbles leads to small and decreasing deviations from 120-degree angles at threefold vertices in the froth, but with a side-number dependence that is independent of time and apparently universal. We also find that a significant n...

We investigate the long time behavior of the survivors' area in the scaling state of two dimensional soap froth. We relate this problem to the recently studied temporal decay of the fraction of Potts spins that have never been ipped till time t. The results of our topological simulations are consistent with the value = 1 for the scaling exponent of the survivors' areas, in agreement with a rece...

We study the criticality of a Potts interface by introducing a froth model which, unlike its SOS Ising counterpart, incorporates bubbles of different phases. The interface is fractal at the phase transition of a pure system. However, a position space approximation suggests that the probability of loop formation vanishes marginally at a transition dominated by strong random bond disorder. This i...

A general solution for the slope of a fusion curve is presented. It is not the Clausius-Clapeyron equation which is a special case for one-component systems. The connection between fusion curve slope and crystal/liquid buoyancy is obscure in multicomponent systems even though the slopes of fusion curves for any given composition are always well defined. The olivine flotation hypothesis at high ...

or days he feels something in his throat which obstructs and causes difficulty in uttering words; hence he groans and utters an indistinct sound by fits and starts like that of a dog, and this is shortly followed by insensibility which lasts for some minutes, during which he remains unconscious of all round him. His eyes are found congested, pupils dilated, aud if he is in standing posture, fal...

The purpose of this study is to propose the flotation procedure seafloor massive sulfide (SMS) ores separate chalcopyrite and galena as froth sphalerite, pyrite, other gangue minerals tailings, which currently facing difficulties due presence water-soluble compounds. obtained SMS ore sample contains CuFeS2, ZnS, FeS2, SiO2, BaSO4 in addition PbS PbSO4 Pb minerals. Soluble compounds releasing Pb...