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 …

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 ...

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 …

A two-stage extraction process was proposed to recover sulfuric acid and vanadium from simulated acid solution and titanium dioxide waste acid (TDWA). Some extractants were compared and studied, in which the enthalpy changes (ΔH) of the extraction process and the extracted complex were analyzed by using thermodynamics. …

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 …

Herein, we investigated the induced-leaching behavior of hematite by iron powder after ammonium sulfate roasting vanadium titanomagnetite concentrate and develop a P204-P507 synergistic extraction method for separation of vanadium(IV), iron and titanium. The results showed that the effective selective separation of vanadium, …

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 ...

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 …

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 …

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 …

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 …

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 …

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 …

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 …

Zhao Longsheng et al. used the rotary kiln pre-reduction-electric furnace method to treat vanadium-titanium magnetite, separated iron, vanadium and titanium efficiently, and enriched titanium into slag …

Bian et al. [22] investigated the separation efficiency of vanadium, titanium, and iron from vanadiumbearing titanomagnetite carried out by pressurized pyrolysis of ammonium chloride-acid leaching ...

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 …

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

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 ].

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 …

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 …

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. As the main ionic forms of vanadium and chromium, V(V) and Cr(VI) have similar …

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 …

A large number of unexploited low-grade vanadium-titanium magnetite deposits have been found in the Chao-yang area of China in recent years. The reserves are estimated at more than 20 billion tons. A mineralogical study of raw sample indicated that it was a typical low-grade vanadium-titanium magnetite ore with weathering. Most of …

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 …

Keywords Vanadium–titanium magnetite · Smelting separation · Electric furnace smelting · Ecient utilization of iron ore Introduction South African vanadium–titanium magnetite is a complex mineral resource rich in iron, vanadium, titanium, and chro-mium [1–3]. Its ore composition is composed of more than 20 elements [4–6].

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 …

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

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 …