The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of …

The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of titanium, vanadium and chromium from oxalic acid leachate of VS. Firstly, the separation of titanium from the leachate by …

Metalizing reduction and magnetic separation of vanadium titano-magnetite based on hot briquetting Shuang-yin Chen and Man-sheng Chu School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China ... agglomerates is 1480 N, and the recovery ratios of iron, vanadium, and titanium are as high as 91.19%, 61.82%, and …

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 …

of 85.49% were obtained when the vanadium-titanium magnetite concentrate was reduced for 100 min at 1623 K with a C/O molar ratio of 2.5 and 8% CaCO 3, followed by separating at a magnetic field

Abstract and Figures. To effectively recycle and utilize vanadium and titanium resource from the vanadium slag, the crystallization and separation behaviors of V-spinel phase and Ti-spinel phase ...

PDF | On Nov 18, 2021, Liwei Liu and others published Recovery of Fe and V via selective reduction–magnetic separation of vanadium-titanium magnetite concentrate | Find, …

We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium magnetite (VTM) ore. The ore chunks were crushed using jaw crushers and then grinded …

The study focused on the recovery of vanadium from a Korean vanadium-bearing titaniferous magnetite (VTM) ore, examining the behaviors of magnetic separation and Na2CO3 roasting-water leaching. Two concentrates were prepared using single-stage dry magnetic separation and three-step wet magnetic separation, resulting in V2O5 …

Efficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separation of the material. The fusibility of …

ultra-high-titanium vanadium–titanium magnetite con-centrate (<75 lm) used in the experiment. The data clearly reflect the mine's low-iron, high-vanadium, and ultra-high titanium characteristics. The X-ray diffrac-tion (XRD) pattern of the raw ore in Figure 1 shows that the phases of the concentrate are mainly magnetite

Furthermore, prioritized extraction of vanadium, combined with the separation of titanium–iron and the utilization of titanium slag, was expected to achieve comprehensive ... The vanadium–titanium magnetite ore used in the experiment was from Chao-yang, China. After crushing and grinding, the particle size of the ore was 0.074 mm ...

Ultimately, about 88% V and 81% Ti were recovered, when vanadium slag was roasted at 663.15 K with a 1:5 ratio of slag-to-NH4HSO4 and followed by 8 vol.% H2SO4 leaching. Cont.

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 to the …

Previous research has shown that maximizing iron and vanadium reduction while minimizing titanium reduction is vital for achieving a fine slag–metal separation [10, 11]. At the same time, a suitable Ti-bearing phase and a high TiO 2 content in titanium slag are beneficial for further titanium recovery [ 7, 12 ].

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 ...

A method has been proposed for treatment with VTMC consisting of carbothermal reduction, magnetic separation, and firing with alkali metals followed by …

1. Introduction. Vanadium (V) and titanium (Ti) are important strategic metals, which are widely used in metallurgical industry, chemical industry, machinery manufacturing, battery, aerospace, etc. [[1], [2], [3], [4]].As a representative resource for extracting V and Ti, vanadium–titanium magnetite (VTM) is a polymetallic symbiotic …

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 …

Vanadium-titanium magnetite ore is a typical polymetallic symbiotic ore that is primarily found in Russia, China, and South Africa. In China, vanadium slag ... The method of high-temperature water quenching pretreatment for the vanadium slag has been proven to be effective for vanadium and titanium separation. In detail, compared with …

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 …

At present, vanadium–titanium magnetite is mainly utilized to produce hot metal and slag through the blast furnace (BF) process. However, the recovery of Fe, V and Ti are 70, 50% and less than 10% of raw ore respectively [].There are approximately 600,000 tons of titanium slag containing 22–25% TiO 2 produced by blast furnace …

Vanadium-containing titanium magnetite is the main source of V and Ti in the internal market. About 75% Fe, 82% V, and 44% Ti pass into iron concentrate during ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the …

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 …

Hydrochloric acid leaching has been widely used in the recovery process of vanadium due to its efficient selectivity. It was necessary to further separate vanadium from hydrochloric acid leaching solution. Four extractants of P204, P507, Cyanex272, and N1923 were compared for extraction of vanadium from a simulated hydrochloric acid …

The main findings of the scandium separation mechanism show that Sc-bearing minerals can effectively decompose and release scandium element after roasting, and created favorable conditions for scandium leaching with titanium dioxide wastewater to achieve the purpose of scandium recovery. ... Calcium salts roasting of vanadium …

Vanadium-bearing titanomagnetite ore is an important mineral resource containing vanadium, titanium, and iron . It is widely distributed around the world mainly including China, Russia, America, and North Africa [].Especially in the Panxi region of China, the proven deposits account for more than 90% of total reserves in China [2, 3].At …

1. Introduction. Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most important iron ore resources in China [1,2,3,4].Titanium, as an indispensable metal raw material for the modern industry and advanced science and technology, is mostly …

DOI: 10.1016/j.seppur.2020.117169 Corpus ID: 219743539; Efficient separation of vanadium, titanium, and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process

Based on the speciation analysis of vanadium in sulfuric acid medium, the single-stage extraction efficiency of vanadium, iron, and titanium was 94.21%, 3.45%, …

Vanadium and chromium are important rare metals, leading to a focus on high chromium vanadium slag (HCVS) as a potential raw material to extract vanadium and chromium in China. In this work, a novel method based on selective two-stage roasting–leaching was proposed to separate and extract vanadium and chromium efficiently in HCVS. XRD, FT …

Separation of titanium from vanadium and iron in leach solutions of vanadium slag by solvent extraction with trioctyl tertiary amine (N 235) Hydrometallurgy (2019) ... Therefore, the control of vanadium separation from iron impurity at-source is of great importance for efficient and sustainable vanadium compound production from …

High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM …

Mechanism on the Separation of Vanadium and Titanium from Vanadium Slag by Roasting with Ammonium Sulfate. by Guoquan Zhang *, Kun Wang and Mingzhi …

Mu et al. (2011) showed that pressure acid leaching could achieve selective separation of vanadium and titanium. The leaching rate of vanadium from slag could reach 96.87% ( Mu et al., 2011 ). On this basis, Zhang et al. (2015a) further studied the optimal conditions for extracting vanadium from steel slag, and the leaching rate could …

Journal of Radioanalytical and Nuclear Chemistry, Vol. 263, No. 1 (2005) 23–28 Improved radiochemical separation of no-carrier-added vanadium-48 from proton irradiated titanium target M. L. Bonardi,1* E. Rizzio,2 M. Gallorini,2 F. Groppi,1 H. S. Mainardi1 1 Universitá degli Studi di Milano and National Institute of Nuclear Physics, INFN ...