A green separation routes for Fe and Ti from ilmenite via molten salt electrolysis is proposed in CaCl 2-NaCl-CaO molten salt.FeTiO 3 powder can be dissolved into the molten salt, directly. In the process, CaTiO 3 is formed by the reaction of TiO 3 2-and Ca 2+ in molten salt components. Pure iron is obtained under the controllable …
In the Austpac process, ilmenite ore is roasted to selectively magnetise the ilmenite, and removed the gangue minerals by magnetic separation, followed by a hydrochloric acid leaching process [4]. Oxidation and reduction of ilmentie followed by hydrochloric acid leaching is utilized by Murso process [ 5 ].
The ilmenite production from heavy mineral sands exclusively utilizes a physical separation method using magnetic separation, gravity concentration and electrostatic separation. …
Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium resources. Here, the separation of ilmenite from …
For the subsequent separation of ilmenite and rutile, it is necessary to use the difference in their magnetic properties using electromagnetic separation methods. It has been established that when using the process of separating titanium minerals based on their difference in magnetic susceptibility, ilmenite will be found mainly in the magnetic ...
The separation results are presented in Fig. 5, Fig. 6, Fig. 7, Fig. 8. Download: Download full-size image; Fig. 5. Yield of ilmenite into the magnetic product as a function of roasting time. The magnetic separation was performed with a Frantz Isodynamic Separator and the electric current was set at 0.15 A (magnetic field intensity: …
For the primary separation, a Magnetic Separator (typically an Induced Magnetic Roll or Rare Earth Roll Separator) removes magnetically-susceptible para and ferro magnetic minerals (e.g. ilmenite, garnet, monazite). The secondary electrostatic separation focuses on separating the remaining minerals (e.g. zircon sand, silica and …
Ilmenite concentrates are the raw material used for the production of titania pigment and metallic titanium. This work studies the effect of the addition of Na 2 CO 3 in direct carbothermic reduction of ilmenite concentrate to enhance the separation of metallic iron from titanium components. The effects of temperature, Na 2 CO 3 content and C/O …
Here, the separation of ilmenite from VTM ore is studied by combining magnetic separation and flotation technologies. In particular, the floatability of mixed MOH/PG-1 collectors is thoroughly ...
It is found that microwave irradiation can increase the crystalline compound of ilmenite and promote the cracking separation of ilmenite particles and associated gangue minerals due to the selective heating characteristics by this pre-treatment method (the heating speed of ilmenite is faster than associated gangue minerals and thus thermal ...
Firstly, for the low recovery rate of ilmenite, our technicists adjust the magnetic structure and magnetic field intensity, which increases the separation area and separation time. The effective separation size is greatly reduced to 20μm. Compared with the gravity separation operation, the recovery rate is more than 20% higher than before.
The studies of ilmenite separation from titanaugite using BHA complex as selective depressant were reported [2, 5]. Tian et al. [3] applied carboxylated starch in separation of imenite from forsterite using flotation technique. At the same time, Meng et al. [4] studied the separation performance of ilmenite with low grade titanium oxide.
High gradient magnetic separation is widely used in magnetic minerals upgrading, and its separation performance is significant depending on the parameters. In this investigation, the Mathematical …
In the separation of ilmenite by the froth flotation method, the separation efficiency and selectivity index are inversely related to the iron content of gangue minerals. After microwave irradiation, the maximum improvement of separation efficiency and selectivity index are achieved when the gangue minerals are free from iron. ...
The research was aimed at: (1) explaining the feasibility of preconcentrating ultrafine ilmenite by SMS based on theoretical description; (2) demonstrating the effects of magnetic intensity and slurry velocity and the synergy effects of the two factors on magnetic separation of the ultrafine ilmenite ore based on the statistically designed ...
The separation of natural ilmenite into TiO2 and Fe2O3 need to be explored to gain the high purity separation product. A new combination method named of carbothermic reduction, acidic-leaching …
Mathematical Model of Ilmenite Separation Efficiency Using a. High Gradient Plate Magnetic Separator. Fangping Ye 1, W eijie Jiang 1, Xiangjun Ren 2, *, Jinyue Xu 2, Zhiqiang Guo 2 and Chenyu Li 1.
Magnetic and Electrical Separation. Barry A. Wills, James A. Finch FRSC, FCIM, P.Eng., in Wills' Mineral Processing Technology (Eighth Edition), 2016 13.5.2 High-Intensity Magnetic Separators. Weakly paramagnetic minerals can only be effectively recovered using high-intensity (B-fields of 2 T or greater) magnetic separators (Svoboda, 1994).Until the …
1. Introduction. Titanium and its dioxide are widely used in a variety of industries, including chemical pigment, biochemical devices, navigational equipment, aerospace, and the military-industrial [1], [2].Most commercial titanium production mainly comes from ilmenite in China [3].Ilmenite is recovered through multiple separation …
In order to investigate the loss mechanism of fine-grained ilmenite during magnetic separation process of the titanium beneficiation plant in Panxi region, four sizes fractions of ilmenite and titanaugite minerals were prepared.It was shown that with the increase of applied magnetic field strength, the magnetic susceptibilities of each ilmenite fractions …
The ilmenite and titanaugite used in this study were purified from the magnetic separation concentrate picked from the Midi titanium processing plant in Panzhihua. As the sample was treated by high-gradient magnetic separation, pure ilmenite and titanaugite were obtained by purifying the sample using a shaking …
Froth flotation is the main efficient method to separate and extract fine ilmenite (Fe 2+ Ti 4+ O 3) against gangue minerals. [5], [6], [7]. However, as the demand for high-quality magnetite rises in the upstream process of ilmenite separation, the content of fine minerals increases in ilmenite flotation.
Besides these minerals, ilmenite and zircon were the target minerals to be concentrated. Using a magnetic separation method at various magnetic intensities, paramagnetic minerals, ilmenite (0.8 T …
According to the physical differences between ilmenite and gangue, the enrichment of ilmenite is usually carried out by using techniques such as gravity separation and magnetic separation [10], [11]. However, the gravity separation has some limits in particle size of −37 μm, that is, the ilmenite at a particle size less than 37 μm …
It should be noted that to recover titanium effectively the process of magnetic separation and enrichment of ilmenite mineral particles must be continued further. Since vanadium exists in ilmenite (see Fig. 1 and Table 2), the rapid increase of titanium grade and recovery rate (i.e., high phase content of ilmenite) at a high magnetic intensity ...
Ilmenite as a titanate of ferrous iron mineral (Fe 2 + Ti 4 + O 3) is one of the major TiO 2 containing minerals from which titanium dioxide and titanium metal is …
The effective separation of ilmenite is essential to convert these titanium ores to value-added products. Flotation is the most widely applied beneficiation process for separating ilmenite, where surface chemistry and selection of …
In addition, the ultrafine ilmenite cannot be effectively pre-concentrated via the high-gradient magnetic separation, because the magnetic force to capture the ultrafine ilmenite cannot be provided by the high-gradient magnetic separator [10], [11]. Even though the froth flotation cannot effectively process the ultrafine ilmenite.
Thus, the optimal pulp condition for the separation of ilmenite and titanaugite with mixed BHA/NaOL (7:3) collector was fixed at pH 8.0 in consideration of TiO 2 recovery and grade. At these conditions, the TiO 2 recovery and grade of ilmenite concentrate were 86.50% and 39.42%, respectively.
A depressant is essential to the effective flotation-based separation of ilmenite and forsterite, based on their comparable physicochemical characteristics. In this work, dextran sodium sulfate …
Sodium trans-2-nonene hydroxamate (NaTNA), a derivative of hydroxamic acid, was successfully synthesized as an effective collector for the flotation separation of ilmenite and forsterite.Micro-flotation results showed that NaTNA exhibits a superior flotation performance for ilmenite compared to sodium oleate. To elucidate the flotation …
