calcium roasting acid leaching processes; in this process, almost all of the iron, chromium, titanium, and other elements remain in the vanadium tailings [11].
In this study, an efficient utilization of vanadium titanomagnetite concentrate was systemically investigated through potassium pyrosulfate (K2S2O7) synergized with ammonium sulfate ((NH4)2SO4) cascade roasting to separate and recover vanadium, iron, and titanium. The result shows that 95.87% of vanadium and 80.13% of iron could be …
Pergamon 0892,-.6875(94)00110-3 Minerals Engineering, Vol. 8, Nos 1/2, pp. 159--168, 1995 Elsevier Science Ltd Printed in Great Britain 0892-6875/95 $9.50+0.00 EXTRACTION OF TITANIUM, VANADIUM AND IRON FROM TITANOMAGNETITE DEPOSITS AT PIPESTONE LAKE, MANITOBA, CANADA B.C. JENA, W. DRESLER …
The D2EHPA extraction − H 2 O 2 stripping process offers a significant advantage over traditional methods for recovering vanadium (V) by eliminating the generation of ammonia-containing wastewater. However, the main challenge in industrial settings is the rapid decline in stripping efficiency due to the instability of peroxides.
A new process comprising metallizing reduction, magnetic separation, and electroheat melting separation is proposed with the aim of achieving high recoveries of …
This paper investigated a pellet ore production process in which vanadium was extracted from vanadium and titanium magnetite concentrates using sulfuric acid leaching. Calcium and magnesium were added to the iron ore concentrate during pellet production to produce calcium vanadate and magnesium vanadate after roasting. The …
The increase in roasting temperature favors the reduction of iron oxides but disfavors the oxidation of vanadium oxides. The recoveries of vanadium, iron, and …
Introduction. Nowadays, the most widely used titanium product is titanium dioxide (TiO 2), being as pigment, as filler in paper, plastics and rubber industries and as flux in glass manufacture [1].Titanium is mainly recovered from ilmenite concentrates and rutile, which contain between 50% and 97% TiO 2 [2]. However, because of the …
Three technological processes are currently used to sepa-rate and recover valuable elements from vanadium-bearing titanomagnetite. One is the blast-furnace process …
The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be ...
The traditional roasting technique using sodium salts in vanadium production has been disadvantageous due to the large consumption of energy and the emission of harmful gases. A modified process using molten salt roasting and water leaching to extract vanadium and titanium from domestic titanomagnetite concentrate was investigated. The …
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 …
PDF | Minerals recovery from the earth's crust and the subsequent processing of economic mineral deposits, ie, ores, constitutes a wide variety of... | Find, …
Abstract. We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from …
5 TELLNES IN NORWAY Tinfos, a Norwegian company (C.J.Dixon,1979) with roots back to 1875, operates a mine at Tellnes, Norway, processing 200,000 tpa of high titania hard rock (44% TiO
A sodium modification–direct reduction coupled process was proposed for the simultaneous extraction of V and Fe from vanadium- bearing titanomagnetite.
1. Introduction. The production of titanium-white mainly includes sulfuric acid method and chloride method, of which the sulfuric acid method is mainly used in Chinese market [1], [2].In recent years, the chloride method has gradually gained market share due to its large production capacity, high product quality, and minimal environmental impact, …
The residue from desulfurization and denitrification of exhaust gas treatment process with pyrolusite ore as absorbent is regarded as a potential source of iron and manganese.
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 solution, …
This article presents a new method to extract iron, titanium, vanadium, and chromium from high-chromium vanadium-bearing titanomagnetite concentrates, which are widely distributed in China. The method involves selective reduction, magnetic separation, and leaching processes. The advantages and limitations of this method are compared …
ABSTRACT. This study presents an effective and cleaner process with hydrogen-rich gases that uses oxidation roasting followed by gas-based direct reduction and melting separation to recovery iron, titanium, vanadium, and chromium from Hongge vanadium titanomagnetite (HVTM).
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 mineralogy of …
the smelting behavior and mechanism in which the influence of different valuable components, such as V 2O 5, TiO 2, and Cr 2O 3, has also been referred to. [7,17–24] However, some serious energy consumption and envi-
We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium magnetite (VTM) ore.
As shown in Fig. 3, total iron content, recovery rate of iron and metallization rate of iron in magnetic concentrate increased rapidly as the lignite ratio increased from 10% to 30%, but leveled off at above 30%.As it showed in Fig. 2, the ΔG θ value of Eq. (1) is much more negative than that of Eq. (4) at temperature of 900–1300 °C. Therefore, …
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 ...
The rich titanium–vanadium slag used in the present study was prepared through direct reduction reaction, magnetic separation, and desilication [19].The sample was chemically analyzed using inductively coupled plasma optical emission spectroscopy (ICP-OES, Optima 5300DV, Perkin-Elmer, USA) as shown in Table 1.The mineralogical …
Mining, Metallurgy & Exploration (2023) 40:901–911 903 1 3 ratios of the extractant P204, P507, and their mixtures, respectively. 2.3 Preparation of Iron Oxide Pigment
SYNOPSIS. 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 vanadium titanomagnetite.
The dumping of a large amount of steel slag not only wastes metal resources, but pollutes the ecological environment. In this study, a method for recovery of vanadium, titanium, iron, magnesium, and synthesizing anhydrite from steel slag is proposed. The leaching efficiency of V, Ti, Fe, and Mg was 99.42%, 99.36%, 99.89%, …
Methods of chemical analysis, XRD, and pH monitoring are adopted in order to study wet extraction of Fe, V and Ti based on activated reduction, and the control conditions as well as the degree of ...