Processing copper–vanadium precipitate formed from crude TiCl4 in titania and titanium sponge production

Wang, Xuewen; Zhang, Liping; Shang, Guanghao; Zhang, Guiqing; Yuan, Jiwei; Gong, Shicheng

doi:10.1016/j.hydromet.2009.09.001

Cited by 11 publications

(5 citation statements)

References 8 publications

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Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

“…TiCl4 is the most common precursor of titanium sponge and titanium metal powder [44]. TiCl4 is produced from rutile and upgraded titanium slag, mainly through the chloride process [44] (also referred to as the 'fluidised bed chlorination process'), which is the main process used for sponge and titanium metal production [35]. It is important to note that crude TiCl4 still contains impurities, and that this liquid needs to undergo purification before titanium metal or titanium sponge can be produced.…”

Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

“…It is important to note that crude TiCl4 still contains impurities, and that this liquid needs to undergo purification before titanium metal or titanium sponge can be produced. These impurities are removed by physical means (different boiling points) or by chemical means (reagents such as hydrogen sulphide and organic matter) [44].…”

Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

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A Systematic Literature Review on the Titanium Metal Product Value Chain

Roux¹,

Lingen²,

Botha³

2019

SAJIE

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This article presents a systematic literature review (SLR) on the titanium metal product value chain. Globally this value chain is fragmented, meaning that successive production stages rarely occur within the same country, and information published on the value chain is limited. The aim of this review was to collect the literature to create and elaborate on the titanium metal product value chain. The SLR followed a combined building block searching strategy and a criterion analysis to obtain relevant literature on production stages in the value chain. The value chain was based on the three main sections that comprise the titanium metal industry: the raw material, the processes and technologies, and the market. From the main sections, eight production stages were identified and discussed. Arising from the literature review, these stages will be applied as a baseline to understand the requirements for improving the underdeveloped titanium industry in South Africa.

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Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

Section: Titanium Tetrachloride -Ticl4 (Stage 3)mentioning

confidence: 99%

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A Systematic Literature Review on the Titanium Metal Product Value Chain

Roux¹,

Lingen²,

Botha³

2019

SAJIE

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“…High-boiling-point substances such as FeCl 3 and AlCl 3 can be removed by distillation or sedimentation, whereas low-boiling-point substances such as SiCl 4 can be separated by rectification. The removal of close-boiling-point substances such as VOCl 3 requires chemical reaction and purification under distillation conditions [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Separation and Rectification of Chloroacetyl Chloride from TiCl4

Zhu

Zhang

et al. 2021

Processes

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Titanium tetrachloride (TiCl4) is an important intermediate material for the preparation of titanium products. The organic impurities in TiCl4 are easily accumulated during the production of titanium sponges due to the problems of imperfect detection methods and the lack of effective control methods, resulting in a poor quality of sponge titanium. Among all impurities, chloroacetyl chloride (CAC) is the most important in TiCl4. Herein, the determination of the CAC content in TiCl4 solution, with a low detection limit of 0.633 ppm, was established by the standard addition method using Fourier transform infrared (FTIR) spectrometry. This test method presented good repeatability, excellent accuracy, and moderate precision. Furthermore, the influencing factors of CAC separation in the continuous rectification process, including the heating power (the ratio of total heating power to feed rate), reflux temperature, top tower pressure, and feed temperature were optimized based on an orthogonal experimental design. The experimental data demonstrated that the average CAC removal rate reached 78.94% ± 1.00% under the optimal distillation conditions, with 72.21% of the CAC removed via the off-gas system. Therefore, excellent control of the negative pressure of the tail gas is highly desirable for the removal of CAC impurities.

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“…In the operational process, the copper wire must be periodically washed with water, and then the copper-vanadium precipitate and the wash water containing copper and vanadium was produced. The copper and vanadium in the copper-vanadium precipitate can be recovered by natural oxidation, followed by H 2 SO 4 leaching and soda roasting, respectively [5]. The wash water is usually treated by oxidization, followed by neutralization to form another precipitate containing copper and vanadium [6].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Copper from the Precipitate Obtained by Purifying the Wash Water Formed in Refining Crude TiCl<sub>4</sub>

Pan

Liu

Wang

et al. 2014

AMR

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Copper is used to remove vanadium from crude TiCl4in titanium sponge production which produces large wash water containing vanadium and copper. The precipitate containing copper and vanadium was formed from the wash water by oxidization and neutralization treatment. The vanadium in the precipitate can be recovered by NaOH leaching, after that, the cake containing copper was formed. The leaching of copper from the cake was investigated by H2SO4. Under the optimum leaching conditions (58% H2SO4leaching for 30 min. at room temperature with a pulp density of 28.6%), the copper leaching could reach 90.4%.

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Processing copper–vanadium precipitate formed from crude TiCl4 in titania and titanium sponge production

Cited by 11 publications

References 8 publications

A Systematic Literature Review on the Titanium Metal Product Value Chain

A Systematic Literature Review on the Titanium Metal Product Value Chain

Separation and Rectification of Chloroacetyl Chloride from TiCl4

Extraction of Copper from the Precipitate Obtained by Purifying the Wash Water Formed in Refining Crude TiCl<sub>4</sub>

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