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Method for the extraction and recovery of vanadium

一种萃取、有机萃取剂的技术，应用在工艺效率的提高等方向，能够解决潜在经济可行性有价值金属没有得到证实、增加工艺成本、没有公开工艺过程等问题

Inactive Publication Date: 2013-04-03
TNG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the entire process from leaching to purification, through solvent extraction and back extraction and recovery of vanadium through precipitation is not disclosed.
Additionally, multiple stripping agents are required, which can increase process cost in large scale production
[0007] Additionally, any potential economic viability of hydrometallurgical routes to extract and recover vanadium, and any associated valuable metals, has not been demonstrated

Method used

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  • Method for the extraction and recovery of vanadium
  • Method for the extraction and recovery of vanadium
  • Method for the extraction and recovery of vanadium

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Embodiment Construction

[0036] best practice

[0037] figure 1 A flow diagram of a method 10 for extracting and recovering vanadium from a vanadium ore according to the present invention is shown. Process 10 comprises a leaching step 12 , a solvent extraction step 14 , a vanadium stripping step 16 and an iron stripping step 18 .

[0038] Prior to the leaching step 12, a comminution process 20 and a sorting process 22 are provided. The purpose of the crushing and sorting runs 20 and 22 is to produce a crushed ore of a size conducive to the hydrometallurgical process.

[0039] The raw ore (ROM) material 24 is transported by the front loader 26 and poured into a fixed grid 28 with an aperture of 600mm, and the fixed grid is mounted on the raw ore bin 30 . The oversize is separated from the grid 28 . Separated ROM ore is conveyed from bin 30 to jaw crusher 34 using a variable rate skirt feeder 32 .

[0040] The jaw crusher 34 reduces the material to a maximum size of about 250mm. The crushed ore is...

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Abstract

A method (10) for the extraction and recovery of vanadium from its ores, the method (10) characterised by the steps of: (i) Acid leaching (12) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passing the product (78) of the leach step (i) to a solid / liquid separation step (80); (iii) Passing the liquid product (82) of separation step (ii) to a solvent extraction step (14) in which vanadium and iron are extracted into an organic extractant from that liquid product; (iv) Passing the loaded organic extractant produced in step (iii) to a stripping step (16, 18) in which acid is used to selectively and sequentially strip the vanadium and iron from the organic extractant; and (v) Passing the vanadium containing strip solution of step (iv) to a recovery step (104).

Description

field of invention [0001] The present invention relates to methods for extracting and recovering vanadium. More specifically, the method of the present invention utilizes hydrometallurgy to extract vanadium from vanadium ore. Background technique [0002] Traditionally, vanadium has been extracted and recovered from vanadium ores through a pyrometallurgical process that includes a roasting step with salt addition followed by water rinsing. Environmental issues are becoming increasingly important to those wishing to establish new mineral processing processes, as well as processes in which roasting releases more often than non-releasing products, which are highly damaging to the environment. [0003] So far, hydrometallurgical methods for the extraction and recovery of vanadium from vanadium ores have not been explored due to difficulties in the leaching step and the recovery step. With regard to leaching and recovery, iron is traditionally co-extracted with vanadium, often ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/10C22B34/22
CPCC22B3/0066C22B3/10C22B3/0005C22B34/22C22B3/382C22B3/26Y02P10/20C22B3/3842
Inventor 戴米安EG·康奈利丹尼斯史蒂芬·严塞维·兰姆
Owner TNG LTD