The results show that a concentrate with a TiO 2 grade of 9.90% can be separated via weak magnetic separation and coarse particle tailing dumping. The concentrate grade is then increased to 14.32% via strong …

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 ...

Separation of Ilmenite from Vanadium Titanomagnetite by Combining Magnetic Separation and Flotation Processes Fuxing Zhu 1,2, *, Zhanshan Ma 1, *, Kehui Qiu 2, * and Weixing Peng 1

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.

This study addressed the separation and recovery of vanadium(IV), iron, and titanium from synthetic and real leach solutions of vanadium-bearing titanomagnetite using extractant P204 (di-(2-ethylhexyl) phosphate) and P507 (2-ethylhexyl hydrogen-2-ethylhexyl phosphonate). Based on the speciation analysis of vanadium in sulfuric acid …

In this paper, magnetization roasting - low-intensity magnetic separation was performed on a pre-concentration concentrate obtained from an Australian hematite containing titanium and vanadium to realize the separation of titanium and vanadium. The results showed that an iron concentrate with TFe (total iron) grade of 58.71%, iron …

PDF | On May 1, 2023, Jianfa Jing and others published Chromium and iron recovery from hazardous extracted vanadium tailings via direct reduction magnetic separation | Find, read and cite all the ...

Request PDF | On Jan 1, 2024, Rongyue Geng and others published Pyrrhotite-dependent Microbial Reduction and Magnetic Separation for Efficient Vanadium Detoxification and Recovery in Contaminated ...

The purpose of this study was to analyze the process mechanism and evaluate the dependance of the vanadium recovery on the grinding conditions and magnetic intensity through systematic experiments to finally propose an optimal magnetic …

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 …

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 non-magnetic concentrate contains 8.56% vanadium with a yield of 95.3% and 8.63% titanium with a yield of 85.3%.

In this work, diboron xide and calcium fluoride are applied as composite additives to explore a process suitable for processing low-grade, high-vanadium, ultra-high-titanium vanadium–titanium magnetite. The metallized coal-based direct reduction–electromagnetic separation experiment was conducted. Results show that a …

To achieve high efficiency utilization of Panzhihua vanadium titano-magnetite, a new process of metalizing reduction and magnetic separation based on hot briquetting is proposed, and factors that affect the cold strength of the hot-briquetting products and the efficiency of reduction and magnetic separation are successively …

In the separation of raw ore, Zhang Yanhua and Han Yuexin et al. used weak magnetics to enrich vanadium-titanium magnetite with strong magnetism, and then selected gravity separation, high gradient magnetic separation, electric separation, flotation or their combined processes to obtain titanium concentrate products according …

magnetic separation of vanadium-bearing converter slag Junyi Xiang 1, Qingyun Huang2, Wei Lv, Guishang Pei 1, Xuewei Lv and Songli Liu3 Abstract

Microbial reduction under anaerobic condition is a promising method for remediating vanadate [V(V)] contamination in aquifers, while V(V) may be re-generated with redox fluctuations. The inability to remove vanadium after remediation has become a key issue limiting bioremediation. In this study, we proposed the use of pyrrhotite, a natural …

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

To achieve high efficiency utilization of Panzhihua vanadium titano-magnetite, a new process of metalizing reduction and magnetic separation based on hot briquetting is proposed, and factors that ...

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

Efficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separation of the material. The fusibility of vanadium–titanium magnetite during reduction and smelting reflects the difficulty of smelting separation. In this study, the direct reduction of iron obtained from the …

DOI: 10.1016/j.watres.2024.121143 Corpus ID: 267100843; Pyrrhotite-dependent microbial reduction and magnetic separation for efficient vanadium detoxification and recovery in contaminated aquifer.

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 ...

Oxidized VTM pellets were roasted at various temperatures for 120 min under a gas composition of P(H 2)/P(H 2 + CO) = 0.72 and then ground to particle size of <0.044 mm accounting for 90 wt.% following separated at the magnetic intensity of 0.08 T. The effects of reduction temperature on Fe-Ti separation and recovery are shown in …

Pyrrhotite-dependent microbial reduction and magnetic separation for efficient vanadium detoxification and recovery in contaminated aquifer. ... 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 …

With the aim of separating Fe and V, a vanadium-titanium magnetite concentrate was selectively reduced, followed by magnetic separation. The processes …

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 …

The proposed magnetic roasting technology provides a new idea and method for the separation of vanadium and titanium from hematite containing vanadium …

Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium titano-magnetite (VTM).

The separation of Fe, V, Cr, and Ti in the direct reduction products of South African vanadium–titanium magnetite has been successfully achieved by smelting …

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 ...