Recovery enhancement of magnetite fines in magnetic separation

Low intensity wet magnetic separation is not very effective for particles less than 10 mum. The magnitude of the fluid drag force exceeds the magnetic force exerted on such particles. Thus, fine magnetic particles are usually not picked up effectively by magnetic separators, resulting in the loss of valuable minerals. Magnetic separation applied to ultrafine magnetite particles after size enlargement by polymer flocculation were found to be effective in reducing loss of fine magnetite particles.


Processing optimization of SiO2-capped aluminum-doped ZnO and amorphous In-Zn-Sn-Oxide thin films for transparent heater and near-infrared reflecting applications
Can, Hilal Aybike; Öztürk, Tayfur; Akyıldız, Hasan; Department of Metallurgical and Materials Engineering (2022-2-09)
In this study, AZO/SiO2 and amorphous In-Zn-Sn-oxide (a-ZITO) functional coatings were developed with combinatorial approach for transparent heater and heat reflecting applications. AZO/SiO2 and amorphous In-Zn-Sn-oxide (a-ZITO) coatings were obtained via magnetron sputtering. A series of optimization steps were carried out specific to each method and coating type. The samples were produced on 75x50 mm2 glass substrates. Further, optimum post-deposition annealing conditions were identified as 400 °C and Ar+...
SİVRİKAYA, OSMAN; Arol, Ali İhsan (2012-01-01)
In this study the separation possibility of gangue minerals from a low grade magnetite ore with 45% Fe from an iron ore deposit located near Erzincan-Turkey was investigated. The iron ore deposit consists of mainly magnetite mineral. Hematite is the second iron oxide found in the deposit. The gangue minerals contain mainly SiO2 and Al2O3 impurities. The main object of the research is to investigate the production of a concentrate suitable for iron ore pellet production. The concentrate for pellet production...
Preperation and characterization of silica coated magnetite nanoparticles and labeling with nonradioactive Re as a surrogate of Tc-99m for magneticly targeted imaging
Zengin, Ümit; Volkan, Mürvet; Department of Chemistry (2010)
Magnetic nanoparticles have been used in many areas owing to their variable characteristic behaviors. Among these iron oxide nanoparticles are one of the mostly preferred type of nanoparticles. In this study Fe3O4, namely magnetite, which is one type of magnetic iron oxide nanoparticles was used. Magnetite nanoparticles with a narrow size distribution were prepared in aqueous solution using the controlled coprecipitation method. They were characterized by electron microscopic methods (SEM and TEM), crystal ...
Mechanical and optical properties of SiO2 thin films deposited on glass
Simurka, Lukas; Ctvrtlik, Radim; Tomastik, Jan; Bektaş, Gence; Svoboda, Jan; Bange, Klaus (2018-09-01)
The optical and mechanical properties of amorphous SiO2 films deposited on soda-lime silicate float glass by reactive RF magnetron sputtering at room temperature were investigated in dependence of the process pressure. The densities of the films are strongly influenced by the process pressure and vary between 2.38 and 1.91 g cm(-3) as the pressure changes from 0.27 to 1.33 Pa. The refractive indices of the films shift between 1.52 and 1.37, while the residual compressive stresses in the deposited films vary...
Metamaterial Absorber Based Multifunctional Sensors
Sabah, Cumali (The Electrochemical Society, 2016-01-01)
In this paper, several important applications of a metamaterial absorber (MA) based sensors such as temperature, pressure, moisture, and density are presented. Since the sensing ability mostly considers the resonance frequency, the frequency range where the resonance shifts occur linearly or non-linearly depending on the temperature, pressure, moisture, and density changes is selected carefully. The model is composed of X shaped resonators (XSR), dielectric substrate, the sensing layer, dielectric substrate...
Citation Formats
A. İ. Arol, “Recovery enhancement of magnetite fines in magnetic separation,” COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, pp. 151–154, 2004, Accessed: 00, 2020. [Online]. Available: