Grinding, sieving and magnetic separation were combined to recover metallic iron from the converter slag, and yielded approximately 41.5% of iron in which the iron content was as high as 85%, and ...

The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of 120 min, metallic iron concentrate ...

This study presents a proposed improved process of separating metallic iron from vanadium-bearing converter slag more efficiently. The mineralogical and …

A new process comprising metallizing reduction, magnetic separation, and electroheat melting separation is proposed with the aim of achieving high recoveries of iron, vanadium, and titanium from ...

Additionally, the magnetism of pyrrhotite facilitates its separation, allowing it to be used as a magnetic material for removal of Cr(VI), Cd(II), Cu(II), and other …

In addition to vanadium, titanium concentrates were also obtained by medium-intensity magnetic separation and the grade and recovery were 38% and 75%, respectively. View Show abstract

A technique with coal-based direct reduction followed by magnetic separation is presented in this study for recovering and reusing iron otherwise wasted in vanadium tailings. Process parameters such as usage of additives, tailings/reductant/additives ratio, reduction temperature and time, as well as particle size …

1. Introduction. Global vanadium reserves stand at approximately 22 million tons, of which China's contribution is 9.5 million tons. Vanadium-titanium magnetite (VTM) is the main raw material ...

The predominance of vanadium(IV) in leaves (∼60-80% of total vanadium) indicates bio-reduction of vanadium in Chinese cabbage, since the mobile vanadium in oxic soils was usually pentavalent.

The new process of metalizing reduction and magnetic separation based on hot briquetting demonstrates the evident technological advan-tages of high efficiency separation of iron from other valuable elements in the vanadium titano-magnetite. Keywords: magnetite; hot briquetting; ore reduction; magnetic separation 1. Introduction

Up to 49.0 ± 4.7 % of vanadium could be removed from the aquifer by the applied magnetic field, and the vanadium in the aquifer after the reaction was mainly in the acid-extractable and reducible states. pH had a strong effect on the magnetic recovery of V(V), while the influence of initial V(V) concentration was weak.

Combining Magnetic Separation and Flotation Processes Fuxing Zhu 1,2, *, Zhanshan Ma 1, *, Kehui Qiu 2, * and Weixing Peng 1 1 State Key Laboratory of Vanadium and Titanium Resources ...

The study of the carbothermal reduction behaviour followed by magnetic separation of Panzhihua vanadium titano-magnetite based on hot briquetting has been investigated and has shown good degree of ...

The microwave-assisted reduction behaviours of two low-grade iron ores having a similar Fe content of 49wt% but distinctly different mineralogical and liberation characteristics were studied. Their performances in terms of the iron grade and recovery as obtained from statistically designed microwave (MW) roasting followed by low-intensity …

The Baima vanadium titanomagnetite deposit, located in the Panzhihua-Xichang (Panxi) metallogenic belt in China, is one of the super-large deposits in the region. The titanomagnetite upgrading process involves grinding the raw ore followed by magnetic separation. To determine the processing characteristics of the ore and assess the …

Presently, there are many research studies on vanadium-titanium magnetite in China, most of which first adopt a single process of low-intensity magnetic separation to separate strong magnetic iron minerals such as titanium magnetite and ferrous magnetite (which contain the concentrates of vanadium and titanium), followed by gravity …

lowed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO 2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sul-fate dosage of 2 wt% at roasting temperature of 1150 C for roasting time of 120 min, metallic iron concentrate

In recent years, a low-grade vanadiferous titanomagnetite concentrate (LVTC) produced in the northwest area of Liaoning has attracted more and more attention. However, it is difficult to recover and …

Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium titano-magnetite (VTM). The effects of reduction temperature, gas composition, reduction time, grinding fineness, and magnetic field intensity on the efficiency of Fe-Ti separation were …

Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, …

1. Introduction. Vanadium titano-magnetite (VTM) is a polymetallic symbiotic iron ore primarily containing iron, vanadium, and titanium. Iron minerals and titanium-bearing minerals coexist closely, primarily in the form of the strongly magnetic titanium magnetite and weakly magnetic ilmenite; however, vanadium-bearing minerals are …

Thus, the selective separation of chromium and vanadium is essential for ensuring the quality of the vanadium product and improving the resource utilization, environmental effect, and process economy of the vanadium-titanium industry. ... B solution was slowly added to A solution under magnetic stirring, when B solution was dropped to …

Coal-based reduction and magnetic separation behavior of low-grade vanadium-titanium magnetite pellets were studied in this paper. It is found that the metallization degree increased obviously with an increase in the temperature from 1100 °C to 1400 °C. The phase composition transformation was specifically analyzed with X-ray …

A simultaneous method for removing sodium, and recovering chromium and iron from extracted vanadium tailings by calcium reduction and magnetic separation …

A technique with coal-based direct reduction followed by magnetic separation is presented in this study for recovering and reusing iron otherwise wasted in vanadium tailings. Process parameters such as usage of additives, tailings/reductant/additives ratio, reduction temperature and time, as well as particle size …

In general, for strongly magnetic materials such as magnetite, and vanadium-titanium magnetite, a whole magnetic separation flowsheet can be used to …

Currently, vanadium titanomagnetite concentrate and ilmenite concentrate can be obtained by traditional ore dressing methods such as magnetic separation, gravity separation, and flotation. Generally, low-intensity magnetic separation is first conducted to beneficiate the vanadium titanomag-netite concentrate after grinding of the raw ore.

In this study, we aimed to scientifically determine the effect of silicate minerals on a Korean VTM ore metallurgical process by investigating the effect of …

After decades of development of the vanadium titanomagnetite (VTM) ore in the Panzhihua district changes have taken place to the ore characteristics. In addition, preliminary research carried out in this area mainly focused on the separation and extraction of iron resources and lacked a systematic research focus on the process …

A magnetic separation process was investigated for the pre-concentration of low-grade vanadium-titanium magnetite ore. The results showed that 73.52% of feed ore were directly discarded for reducing the processing capacity of follow-up processing. ... The products of low-intensity magnetic separation included vanadium-titanium magnetite ...