-
- دوشنبه تا شنبه: 10:00 - 16:00 / یکشنبه تعطیل است
The bauxite ore residue used in this study was a byproduct of the Bayer process. The main compositions of bauxite ore residue sample and the non-magnetic material prepared by reductive roasting-magnetic separation process of bauxite ore residue are shown in Table 1.The reductive roasting and magnetic separation process …
به خواندن ادامه دهید
This study investigates the properties of H 2 -reduced calcium-added bauxite residue, self-hardened pellets, and the feasibility of iron recovery through …
به خواندن ادامه دهید
Recovery of TiO 2 –Bearing Iron Concentrate from Bauxite Ore Residue by Magnetic Separation Effects of magnetic intensity. The effects of magnetic intensity of two-stage magnetic separation on the grade of TiO 2 and TFe, as well as the recovery of TiO 2 and Fe were investigated, the results was shown in Figs. 4 and 5 respectively.
به خواندن ادامه دهید
High-iron bauxite ore was obtained from Shanxi, China. Details of the chemical composition of the raw ore are listed in Table 1. The ore was ... low-intensity magnetic separation to produce a magnetic concentrate and non-magnetic product. These samples were analyzed to determine the
به خواندن ادامه دهید
Separation of iron from fine particles of high iron bauxite ore by the process of metallized reduction and magnetic dressing was researched systemically. The effect …
به خواندن ادامه دهید
Chemical analysis showed the tailings comprised 26.2% Fe, 18.6% Si, 3.9% Al, and 1.07% total rare earth oxides (TREO). A rougher–scavenger–cleaner magnetic separation process was deployed to produce two useful streams of REE minerals concentrate and tails using a wet high-intensity magnetic separator (WHIMS).
به خواندن ادامه دهید
The concentrate was further upgraded by magnetic separation, leading to 54.0% available alumina, with an alumina/insoluble silica mass ratio of 12.6 at an overall available alumina recovery of 69.3% in the final concentrate (non-magnetic product). ... the ROM ore is crushed and screened. In China, low grade diasporic bauxite with an Al 2 O …
به خواندن ادامه دهید
Accordingly, the bulk sample was ground to different sizes such as −0.200, −0.100 and −0.075 mm and subjected to low intensity wet magnetic separation. SALA wet drum separator supplied by M/s Sala International Sweden was used for these studies. The magnetic intensity used in all the cases was in the range of 1800–2000 gauss.
به خواندن ادامه دهید
from Bauxite Ore Residue by Magnetic Separation Effects of magnetic intensity The effects of mag-netic intensity of two-stage magnetic separation on the grade of TiO 2 and TFe, as well as the recovery of TiO 2 and Fe were investigated, the results was shown in Figs. 4 and 5 respectively. It is observed from Fig. 4, the grade of TiO 2
به خواندن ادامه دهید
123. reduction is investigated at conditions below the eutecticpoint of the Fe–C system to avoid formation of liquidphases. The target is to form liberated magnetic iron pha-ses, …
به خواندن ادامه دهید
In this context, a low-grade hematite ore with 56.5% Fe has been subjected to heat treatment followed by grinding and wet high intensity magnetic separation (WHIMS). The magnetic separation results indicate that an enhancement in yield by around 15–20% by weight is possible when the ore is heat-treated at 500–800 °C.
به خواندن ادامه دهید
Murray and Lannicelli (Loc. Cit : Nandi 1996) showed that Arkansans bauxite containing 11.3% Fe203 and upto 2% TiO2 could be beneficiated to less than 1.2% Fe203 and less …
به خواندن ادامه دهید
Additionally, the performances of the PLIMS and selected conventional low-intensity drum magnetic separators (CLIMSs) and Davis tube testers (DTTs) were compared. The comparison revealed that the performance of the PLIMS was consistent with that of the DTT in terms of the grade of the concentrate and the recovery.
به خواندن ادامه دهید
The process mainly consists of recovery of TiO2-bearing iron concentrate from bauxite ore residue by direct magnetic separation and sub- sequent extraction of titanium from non …
به خواندن ادامه دهید
High iron bauxite ore is a typical unmanageable polyparagenetic resource and owns high comprehensive utilization value. Separation of iron from fine particles of high iron bauxite ore by the process of metallized reduction and magnetic dressing was researched systemically. The effect of magnetic field intensity, reduction temperature, reduction …
به خواندن ادامه دهید
Magnetic selection allows for substantial benefits to be made through process optimization, including: (1) energy savings in the grinding process; (2) reduction of losses arising from over-ground...
به خواندن ادامه دهید
A process to remove iron from bauxite ore is described in which the ore is first finely crushed, calcined, and contacted with a reducing gas to convert iron present as very weakly magnetic goethite or hematite to magnetite or elemental iron. The ore is then passed through a magnetic separator to remove the iron. A 1.5% Fe203 product was ...
به خواندن ادامه دهید
Magnetic separators are renowned for their separation of magnetic ore; they can also serve as an electromagnet – effective for removing tramp metals, providing the ideal solution for magnetic separation in mineral processing. ... Our wide range of magnetic separators includes Permanent magnet Low Intensity Magnetic Separators (LIMS), Medium ...
به خواندن ادامه دهید
This property is also known as magnetic susceptibility. Compared to gravity separation, this method use factors that are intrinsic to a specific material. This is the reason that magnetic separation is used to extract magnetite (ore) from silicate (gangue). Magnetite is one notable mineral for its high magnetic susceptibility.
به خواندن ادامه دهید
Abstract. Dry high-intensity drum magnetic separator (DHIDMS) has been effectively used for the utilization of low-grade iron ores, thus an in-depth investigation on the separation characteristics ...
به خواندن ادامه دهید
Metallurgical bauxite is a low-value bulk ore, and therefore preference is often given to simple beneficiation techniques, such as crushing followed by dry screening or washing and scrubbing processes. ... such as the high intensity wet magnetic separation and reduction roasting followed by magnetic separation, so that minimum HCl can be …
به خواندن ادامه دهید
Alteration of crystalline structure and magnetic property of these minerals enables separation of low-grade ore by using magnetic separation. It is found that low-grade ferruginous chromite ore can be upgraded by reduction roasting, and 61.2% Cr 2 O 3 was recovered with a chromium-to-iron ratio of 1.93 from a feed chromium-to-iron ratio of …
به خواندن ادامه دهید
It was indicated that reductive roasting at 500°C followed by wet magnetic separation of the calcine produced at low current intensity (0.04 A) and simultaneous addition of a dispersant resulted ...
به خواندن ادامه دهید
The magnetic separator was used by Rao et al. to decrease the iron minerals so that they could be employed in refractory applications . Banerjee et al. employed a gaseous reduction technique followed by magnetic separation to lower the iron concentration in Jamnagar bauxite ore, which can be used as a refractory material …
به خواندن ادامه دهید
A magnetic separator is generally classified as low intensity if its maximum field intensity is less than about 2000 gauss (H= 1.6 x 105 A/m, B=0.20 T). Low intensity magnetic separators (LIMS) are used to treat ferromagnetic and highly paramagnetic minerals such as iron and magnetite. High intensity magnetic separators (HIMS) generally have field
به خواندن ادامه دهید
Best option is Hydrocyclone & magnetic separation with 70% Fe 2 O 3 and 80% recovery. Keywords Bauxite residue Red mud Magnetic separation Hydro cyclone Reduction roasting % Fe2O3 Iron recovery 1. Introduction
به خواندن ادامه دهید
In addition, two wet low-intensity magnetic separation tests, with a fixed low-magnetic intensity of 350 G, were examined under 3% ( w / w ) and 10% ( w / w ) solid concentrations on a feed size of
به خواندن ادامه دهید
the Fe2O3 grade decreased from 20.8 to 5.1 wt%, but in this case the recovery was very low. Keywords: bauxite ores; selective grinding; grinding kinetics; magnetic separation; reduction roasting 1. Introduction Bauxite is an important rock which is used for the production of alumina of metallurgical or chemical grade through the …
به خواندن ادامه دهید
the magnetic separation process has been examined by means of a wet high-intensity magnetic separator, and the analyses have shown a marginal Fe enrichment in magnetic fraction in relation to the sinter. Keywords Bauxite residue Iron recovery Magnetic separation Roasting process Introduction Bauxite is an important ore that is widely …
به خواندن ادامه دهید
When the alumina-bearing material in bauxite ore is converted into non-magnetic material, the digestion temperature decreases significantly from 280 °C to 240 °C with a nearly 99% relative ...
به خواندن ادامه دهید
When the ore was subjected to a two-step treatment, involving reduction roasting followed by magnetic separation, the Fe2O3 grade decreased from 20.8 to 5.1 wt%, but in this case the recovery was ...
به خواندن ادامه دهید
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 both Fe and Al recovery ratio, three different Fe–Al recovery processes with different magnetic roasting (R), Bayer leaching process (L) and magnetic separation (S) orders were investigated. The …
به خواندن ادامه دهید
Iron content was reduced by 43% in comparison to untreated bauxite ore with 75% bauxite recovery as non-magnetic fraction. ... via Davis Tube and low-intensity magnet-ic separation (WLIMS). The ...
به خواندن ادامه دهید
Some strongly magnetic minerals contained in the sample can be separated out by low-intensity magnetic separation, and this provides a potential source of iron from this complex ore. Generally, a low-intensity magnetic separation is beneficial before high-intensity magnetic separation,27 particularly since some impurity elements can be ...
به خواندن ادامه دهید