Leaching process of vanadium-containing tailings clinker

A technology for vanadium tailings and clinker, which is applied in the field of leaching of vanadium-containing tailings and clinker, can solve the problems of increased production cost, long water soaking time, high water content and soluble vanadium content, and achieves improved leaching efficiency and improved recovery. Effectiveness of utilization efficiency, reduced particle size requirements
CN103667680BActive Publication Date: 2016-07-06PANZHIHUA ZHUYU VANADIUM TITANIUM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANZHIHUA ZHUYU VANADIUM TITANIUM
Publication Date
2016-07-06

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Abstract

The invention discloses a leaching technology for tailings clinker containing vanadium and belongs to the technical field of extraction of vanadium from vanadium slag. The invention aims to provide a vanadium-extraction leaching technology for tailings clinker containing vanadium, which can achieve continuous production and has high leaching efficiency. The invention adopts the technical scheme as follows: a, ball milling is performed, that is, after being subjected to sodium salt roasting, the tailings clinker containing vanadium is subjected to wet ball milling to obtain a mixture of the tailings clinker containing vanadium and water, wherein the wet ball milling controls the particle size to achieve the effect that 70%-90% of the tailings clinker containing vanadium can pass through a 120-mesh sieve; b, the mixture is filtered in vacuum to obtain a solution and waste slag. The leaching technology provided by the invention can replace a tank car leaching technology in the original extraction technology of vanadium from tailings, achieve continuous production operation, shorten the leaching time of the tailings clinker and reduce the production cost.
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Description

technical field

[0001] The invention belongs to the technical field of vanadium extraction from vanadium slag, and in particular relates to a process for leaching vanadium-containing tailing slag clinker. Background technique

[0002] Iron and steel plants will get a lot of high V 2 o 5 content of vanadium slag. Vanadium slag will be V 2 o 5 The vanadium-containing tailings with relatively low content are directly called tailings. Tailings usually contain 1.6-2.5% V 2 o 5 , 0.8-2.5% MFe, 15.0-20.0% H 2 O, the rest is SiO 2 , CaO, MgO, MnO, Cr 2 o 3 and other impurities, its particle size is usually 45-60% under the 120 mesh sieve. Tailings are mainly used for roasting to extract vanadium, and the remaining vanadium is recycled to produce vanadium pentoxide.

[0003] In the prior art, the process of extracting vanadium from tailings mainly includes 5 processes of raw material pretreatment, sodium roasting, clinker leaching, vanadium precipitation and melting, and ...

Claims

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