Vanadium titanomagnetite is a complex iron ore which contains iron, vanadium, titanium and other rare metal elements.1, 2 The vanadium titanomagnetite resources are abundant in the Panxi region of China, where the reserves are approximately 9.66 billion tons.3 The titanium resource in this region accounts for approximately 95% …

uses the rotary kiln coal -based process. The advantages of the rotary kiln process are high efficiency, low production cost, and qualified products. However, the separation effect of iron, vanadium and titanium is extremely unsatisfactory, and it is difficult to achieve efficient and comprehensive utilization. In addition, various fire and

XRD patterns for vanadium-titanium magnetite. ISIJ International, Vol. 58 (2018), No. 4. was shown in Figs. 5–6. In the shaded area, metal and slag can be well separated. Figure 5 shows that when the ratio of carbon is 2.0 to 2.8 and the content of NaOH is 30% to 45% at 1 473 K, metal and slag can be well separated.

The sodium smelting of vanadium–titanium magnetite (VTM) can realize a multi-component comprehensive utilization of VTM. To broaden the application of the vanadium-bearing pig iron produced through this process, it is imperative to maintain the titanium content in molten iron at a very low level. In this study, the effects of …

Figure 4: Commercial Grate Kiln For the Grate Kiln vanadium process, the rotary kiln is still the heart of the procedure. This reduces the risk of building a completely new processing scheme. The Grate Kiln process utilises the rotary kiln as the final roasting process but is enhanced by incorporating pelletising, a travelling grate and

Herein, the carbothermal direct reduction process of vanadium–titanium magnetite in rotary kiln is deeply studied, and the effects of process parameters on metallization rate and reaction mechanism are investigated. High-quality direct reduced iron products are obtained, which improve the efficient smelting and comprehensive utilization …

Keywords: rotary kiln; vanadium titanium magnetite; lignite; ironmaking 1. Introduction Ironmaking and steelmaking manufacturing is one of the most energy-intensive industries worldwide, using coal as the primary fuel making it the major contributor to the anthropogenic emissions of carbon dioxide in the world [1]. The annual world

Request PDF | On Feb 1, 2021, Sang-hun Lee and others published Feasibility of Applying a Rotary Kiln to Roast Vanadium in Domestic Titanium-Magnetite Ore | Find, read and cite all the research ...

The high-temperature interactions between vanadium-titanium magnetite carbon composite hot briquettes (VTM-CCBs) and pellets were systematically investigated under simulated blast furnace conditions with respect to the reduction behavior, softening–melting–dripping characteristics, gas permeability, and Ti(C, N) precipitation …

Many scholars have conducted extensive researches focusing on the comprehensive recovery of iron, vanadium and titanium [[8], [9] ... On the other hand, rotary kiln requires the furnace charge have high strength and wear resistance to prevent accidents such as material sticking to the kiln and deposit when the kiln is rotating ...

The effect of B2O3 on the carbothermal reduction of vanadium titanium magnetite was investigated under different temperatures by isothermal experiments. XRD analysis, SEM analysis and kinetic analysis were used to reveal the mechanism of B2O3 in the reduction process. The results showed that B2O3 could accelerate the reduction rate of vanadium …

grate-kiln processes. An innovative binder extracted from lignite and based on humic acid (HA) has been ... Vanadium–titanium magnetite (VTM) is an important source of V, Ti, and Fe, of which China has a reserve of more than 30 billion tons [14,15]. The major challenge of the

High-chromium vanadium–titanium magnetite (HCVTM) is a valuable resource containing metal elements such as iron, vanadium, titanium, and chromium. To recycle these elements, direct reduction is an efficient way. The mechanism and reaction kinetic parameters for the direct reduction of HCVTM were studied. Experimental results …

The oxidation roasting of vanadium–titanium magnetite (VTM) pellets with a new composite binder was investigated using a pilot-scale straight-grate. The evolution of the chemical and phase composition, the compressive strength, and the metallurgical properties of the fired VTM pellets were investigated. Under a preheating …

Vanadium–titanium magnetite is one kind of iron, vana-dium, titanium multiple-element symbiotic typical com-posite ore, which has extremely high comprehensive utilization …

of vanadium–titanium magnetite in the existing smelting process. The process is composed of two parts: the pre-reduction process of vanadium–titanium magnetite in the rotary kiln and the slag–iron separation process in the pure oxygen bath smelting furnace. Firstly, a certain proportion of vanadium–titanium magnetite, coal and fluxes ...

Keywords: rotary kiln; vanadium titanium magnetite; lignite; ironmaking 1. Introduction Ironmaking and steelmaking manufacturing is one of the most energy-intensive

The experimental results show that maintaining a certain carbon content in the reduction products of vanadium–titanium magnetite is conducive to the reduction of …

Wang B, Ding X, Ju T, Zhang X, Cheng G. Influence of Parameters on the Pre-Reduction Process of Vanadium-Titanium Magnetite Carbon-Containing Composite …

The iron, titanium and vanadium play a significant role in modern industry, and are widely used in steel manufacturing, aerospace, military, ... The rotary kiln was better than the shaft furnace in roasting and separation performance, except that its energy consumption was higher than that of the shaft furnace [20, 21].

Vanadium–titanium magnetite is one kind of important strategic resources. However, there exist some common problems in the current smelting process of vanadium–titanium magnetite. In the present paper, we propose the rotary kiln pre-reduction and bath smelting process reasonably for smelting vanadium–titanium …

Catalyst can enhance the reduction effect and promote the reduction of vanadium titanomagnetite. In this paper, the carbon-containing pellets of vanadium titanomagnetite were prepared by using highly volatile coal as the reducing agent under the background of a novel process of pre-reduction in the rotary kiln. The effects of CaO, CaCO3, B2 O3 and …

1. Introduction. Vanadium-titanium magnetite (VTM) is considered as an important strategic mineral, which associated a variety of metal minerals with high comprehensive utilization value [1].The smelting methods of VTM mainly include blast furnace process and coal-based rotary kiln process at present [2, 3].As one of the main …

We investigated the feasibility of roasting domestic vanadium titanium-magnetite ore in a rotary kiln as a pretreatment to effectively leach vanadium from the …

A novel smelting reduction process called pre-reduction in rotary kiln and total oxygen melting pool is a promising route to reduce environmental pollution from the ironmaking industry.

The addition of MgO in the slag to increase the slag optical basicity can not only improve the vanadium reduction but also promote the formation of magnesium …

The results indicate that the optimal process parameters for direct reduction of vanadium–titanium magnetite in a rotary kiln are as follows: a reduction temperature …

According to the literature, China has approximately accounted for 60% of the amount of vanadium production globally, reaching up to 68,000 tons in 2016 (see Fig. 1).Currently, 90% of vanadium is produced from vanadium-titanium magnetite ores via two main approaches according to different ores, such as pristine ores or vanadium …