https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36319 Tue 31 Mar 2020 08:48:19 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46677 Tue 29 Nov 2022 09:28:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42883 Tue 06 Sep 2022 11:51:29 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40109 Tue 05 Jul 2022 13:08:50 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31203 d₉₀ = 15.8 μm) closely associated with this CSK sample was the major impurity mineral, which cannot be separated from kaolin by screening and size classification process. This work investigated the separation of fine quartz from kaolin by flotation. Single mineral flotation tests indicated that effective separation of quartz from kaolin was possible with acidic pH value (pH = 3), depressant of starch and collector of dodecyl amine (DDA). Rougher flotation tests of coal-series kaolin revealed that the SiO₂/Al₂O₃ weight ratio of the concentrate was qualified for industrial applications in the presence of 160 g/t starch and 100 g/t DDA, at acidic pH pulp. A specially designed two-stage cleaner flotation flowsheet increased the concentrate recovery from 37.26% to 46.55% compared to a rougher flotation process.]]> Sat 24 Mar 2018 08:44:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31288 f(K), order of flotation process n and ultimate recovery R_∞ are presented to perform analysis of flotation kinetics. The flotation rate constant f(K) is a function of both the size and hydrophobicity of particles. Though the more commonly used distributions are Delta function as well as Rectangular, Kelsall and Gamma models, there is no agreement in the literature as to which distribution function better characterize the floatability distribution. The first-order models can be used to describe most mineral flotation processes, while there is also evidence that the non-integral-order equation is capable of representing the kinetic characteristics of the batch flotation process. The order is lower than 1 in the initial moments of the flotation process. The solution of ultimate recovery calculated by the least squares method is greater than 100% (R_∞ >100%). An empirical model was proposed to avoid the improper phenomenon in the solution of ultimate recovery, which can improve the availability and validity of kinetic models. Finally, more attention should be paid to the overfitting resulting from the increase in the number of parameters in the statistical analysis of kinetic models.]]> Sat 24 Mar 2018 08:43:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41059 Mon 25 Jul 2022 15:45:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48814 Mon 10 Apr 2023 10:21:49 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45801 Mon 07 Nov 2022 09:58:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34042 Mon 04 Feb 2019 15:02:05 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38013 Fri 23 Jul 2021 15:19:32 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38218 p ≤ 0.25) and bubble Reynolds numbers (50 ≤ Re_b ≤ 200). It was observed that the collision efficiency decreased with increasing the solid fraction until achieving a plateau value. This plateau was attributed to the increase in the lateral expansion of the swarm and particle velocities. The former effect decreased the collision by interception, while the latter increased the inertial effects. However, when the bubble Reynolds number increased, the particle swarm did not have enough time to accelerate or deform before reaching the bubble, and thus, the collision efficiency became insensitive to the solid fraction. The modelling approach presented provides a framework to manage the complexity of particle-bubble interactions in a multiple-particle system.]]> Fri 13 Aug 2021 15:34:48 AEST ]]>