Based on the study of mineralogy, the separation of aluminum and iron from high ferrous bauxites (A and B) was investigated. The results show that the chief mineral is diaspore (size of 5-20 nm ...
Eddy current separation was performed to separate nonferrous metals (aluminium) from aluminium and LFP mixture. The optimized operation parameters for the eddy current separation were feeding speed of 1 m/s and magnetic field rotation speed of 4 m/s. The separation rate of the eddy current separation reached .
Based on the study of mineralogy, the separation of aluminum and iron from high ferrous bauxites (A and B) was investigated.
In the EC method, steel (iron) or aluminum electrodes, which are non ... K. Y. Characteristics of heavy metal separation and determination of limiting current density in a pilot-scale ...
WO2016019419 - PROCESSES FOR THE SELECTIVE SEPARATION OF IRON AND ALUMINIUM. Publication Number WO/2016/019419 Publication Date 11.02.2016 International Application No. PCT/AU2015/000469 International Filing Date 07.08.2015 IPC C22B 3/26 Title PROCESSES FOR THE SELECTIVE SEPARATION …
The process includes two processes: iron oxide reduction and metal iron particle growth (Sun et al., 2019; Yuan et al., ... The Fe–Cu alloy with high copper content needs further copper iron separation, which is a difficult problem to solve in the world. Table 4 is a literature review of Fe–Cu alloy obtained by deep reduction technology.
In this experiment, anatase sulfuric acid leaching liquor is taken as the research object to conduct aluminum–iron separation and high-purity alumina preparation. The leaching solution contains 34.20 g/L of Al 2 O 3, 25.30 g/L of TFe, 7.96 g/L of TiO 2, 12.74 mg/L of Sc 2 O 3, and 288.72 g/L of H 2 SO 4 .
This study investigates extraction and separation of iron and aluminum from hydrochloric acid solution containing iron and aluminum by TBP extraction system. The effects of TBP concentration, extraction time, aqueous acid concentration and O/A ratio on the separation performance …
The separation of metals from electronic waste is an enduring technological and societal challenge, and new metal extraction, refining and recycling solutions are needed. Here the authors report a ...
The aluminum content in the Zn–Al–Fe alloy had little effect on separation efficiency, whereas increasing the iron content led to a decrease in the separation efficiency. Our findings demonstrate the potential of the gas pressure filtration method for the recovery of zinc from galvanizing dross.
The top size generally ranges from 6 to 8 inches and the scrap contains high levels of iron and aluminum with minor copper and zinc. Typical eddy-current separations will recover 80-90 percent of the non-ferrous metals into a conductor product containing as high as 95 percent combined metallics. ... Most notably is the separation of aluminum ...
A water-stable aluminum-based metal–organic framework material (MOF-303) with native N adsorption sites is proposed for the selective adsorption and …
Removal of iron is essential for recovery of aluminum. Herein, this work reported an approach for efficient removal of iron from acid leaching liquor of high-iron bauxite. The …
Process for reducing the iron content in 356 secondary aluminum alloy is developed in the current study. The Fe-rich intermetallic compounds (or sludge) were removed by sedimentation of liquid aluminum through alloy addition. Effects of alloy additions were first surveyed by thermodynamic evaluation. The sedimentation …
The experimental process was presented in Fig. 1 and comprised three stages, including magnetization roasting of iron tailings, alkaline leaching of roasted products, and magnetic separation of leaching residue. The roasted ore was leached with NaOH solution to remove Si-Al gangue minerals, following a procedure that entailed …
The difference of conductivity between primary iron-rich phases and aluminum melt has been used to separate them by electromagnetic force (EMF) which is induced by imposing a direct electric current and a steady magnetic field in molten Al-Si alloy. Theoretical analysis and experiments on self-designed electromagnetic separation indicates that …
In this study, a novel method using supergravity separation with manganese addition to remove iron for aluminum recovery from scrap aluminum alloy was explored. …
For the generic binary separation of equimolar mixed metal oxides, the selective sulfidation pathway is predicted to offer a 65–90% reduction in CAPEX compared with hydrometallurgical separation ...
Decant the supernatant solution (containing the chromium and the aluminum) into another test tube and save the solid (containing the nickel and the iron). Save this supernatant solution for further analysis. It contains the aluminum and chromium cations. Wash the solid by adding 4 mL of water and twenty drops of 6 M (ce{NaOH}).
This paper introduces different extractants and extraction methods used in iron separation (solvent extraction, ion-exchange resin extraction, membrane …
Iron and aluminum in red mud were recovered by a reductive sintering–magnetic separation–digesting process. The raw materials were composed of ordinary Bayer red mud, MgO, Na 2 CO 3 and C, in which MgO and Na 2 CO 3 were used as mineralizing agents, and C as a reductive agent. Sintering orthogonal experiments …
Overall for Sc-Fe system, good separation of Sc 3+ was noticed in 25:25 ratio, as shown in Fig. 3 (a). In rest of the cases, considerable co-separation of the elements occurred with all adsorbents under study. It could be confirmed from the results that SP and SA could yield a good separation of Sc 3+ from Fe 3+ in this ratio.
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C).
Recovering iron and aluminum efficiently is the key route to utilize low-grade high-iron bauxite. Aiming to optimize the iron separating process and elevate …
A cascade extraction method was constructed by combining alkali desilication with carbonation and acid leaching to achieve efficient separation and …
Removal of ferric sulfate (Fe 3+) from aluminum sulfate by solvent extraction is a key step in the process due to the relatively high iron content with an Al/Fe weight …
The method was applied to the separation of iron and aluminium from real samples. 1997 Elsevier Science B.V. Keywords: Cyanex 302; Aluminium(III); Iron(III); Solvent extraction I. Introduction Organophosphorus acids and their esters and oxides have been widely used for the purification and separation of various metals such as Cu(II), …
Some researchers have investigated the use of other additives and other methods in pressure leaching, which is a clean and efficient leaching method that can achieve the separation of vanadium and the main impurities iron and aluminum but is limited for industrial production because of the leaching equipment, as encountered in …
Methods for separation of aluminum and iron from rare earth element (REE) containing solutions. Aqueous Phase Method Ref. HCl leaching of umbers - REE oxalate precipitation [9]
Three-stage treatment includes magnetic separation of iron-containing fraction, carbon separation by flotation and aluminum extraction by autoclave acid leaching. 2) The magnetite amount in the magnetic fraction after separation increases from 5.3 to 20.2 wt %, while the Al 2 O 3 amount in the non-magnetic fraction increases from …
A rapid method was developed for the solvent extraction separation of iron(III) and aluminium(III) from other elements with Cyanex 302 in chloroform as the diluent. Iron(III) was quantitatively extracted at pH 2.0-2.5 with 5 x 10(-3) M Cyanex 302 in chloroform whereas the extraction of aluminium(III …
In the processes described herein the ionic liquid acts as both an extractant and a solvent to separate iron and aluminium from coal gangue in hydrochloric acid leaching solutions. Thus, the feedstock is contacted with the ionic liquid under liquid-liquid extraction conditions for a time sufficient to allow transfer of at least some of the Fe ...
Besides stepwise separation of iron and aluminum by chemical precipitation, other more effective ways, such as solvent extraction, ion exchange, hydrothermal synthesis, and Bayer method (Xue et al., 2017; Yuan et al., 2020), could be incorporated into the cascade extraction process to avoid acid/alkali waste and obtain …
Fig. 2 presents the particle size of red mud. It can be seen from that the average particle size is 23.94 μm, and 60% less than 100 μm with a specific surface area of 2500 cm 2 /g. Mineral phases and distributions of iron, aluminum and titanium in the phases in red mud are listed in Tables 2 – 4, respectively.It can be seen from that iron, …