Removal of Arsenic from Leaching Residue of Tungsten

Xu, Liqiang; Liao, Chunfa; Xie, Sui; Zhao, Baojun

doi:10.1007/978-3-030-92388-4_8

Cited by 1 publication

(1 citation statement)

References 13 publications

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“…However, the authors did not mention the disposition of toxic elements such as As. Xu et al [94] treated tungsten residue using Na 2 CO 3 calcination combined with water leaching. When the mass ratio of Na 2 CO 3 :tungsten residue was larger than 3:10, the leaching residue obtained from water leaching of the calcination product at 900 • C had an As content of less than 0.1%, with a recovery of W greater than 90%.…”

Section: Harmless Treatment and Reductionmentioning

confidence: 99%

Recent Advances in the Utilization of Tungsten Residue: A Mini Review of China

Deng,

Cheng,

et al. 2023

Metals

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As a metal of strategic value, tungsten plays an important part in civil and military applications. Currently, China is the biggest tungsten producer all over the world, and the metallic smelting technologies for tungsten are well established. However, the harmless recovery and treatment procedures for tungsten residue remain rather underdeveloped. The treatment of tungsten residue generally includes the recovery of valuable metals (e.g., scandium, tantalum, and niobium) and the solidification of toxic elements (e.g., arsenic, lead, and chromium), which may control the transfer of these elements and metals. If treated improperly, the resource of tungsten residue may be wasted, and potential environmental risks could arise. Therefore, the safe disposition of tungsten residue has become the limit factor and an urgent problem to be solved for the sustainable development of tungsten-related industries. In this regard, we reviewed the industrial background of tungsten and the composition and toxicity characteristics of tungsten residue. In addition, particular attention was paid to the harmless utilization processes and technologies for tungsten residue, which were then systematically compared in terms of the applicable situations as well as their advantages and shortcomings. Finally, the development trend for the harmless utilization of tungsten residue was discussed, and some proposals for further studies were provided.

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Section: Harmless Treatment and Reductionmentioning

confidence: 99%