Method for extracting manganese metal from vanadium precipitation wastewater and vanadium extraction tailings

A technology for extracting vanadium tailings and vanadium-precipitated wastewater, which is applied to the improvement of process efficiency, photography technology, instruments, etc.
CN105219969AActive Publication Date: 2016-01-06攀钢集团西昌钒制品科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
攀钢集团西昌钒制品科技有限公司
Publication Date
2016-01-06

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Abstract

The invention relates to a method for extracting manganese metal from vanadium precipitation wastewater and vanadium extraction tailings, belonging to the technical field of metallurgical and chemical industries. The method for extracting manganese metal from vanadium precipitation wastewater and vanadium extraction tailings comprises the following steps of (1) mixing vanadium precipitation wastewater and vanadium extraction tailings, heating to 60-80 DEG C, and carrying out solid-liquid separation after reacting by stirring to obtain a first filtrate and residues; (2) adding a reducing agent into the first filtrate to reduce pentavalent vanadium in the solution into tetravalent vanadium, and then, filtering to obtain a second filtrate; (3) adding an antioxidant into the second filtrate, and reacting at the temperature of 50-60 DEG C to oxidize the unreacted reducing agent in the step (2); (4) adding activated carbon or suspended matters or suspended particles in a polyacrylamide adsorption solution, and then, filtering after uniformly stirring to obtain a third filtrate; and (5) adding selenium dioxide or sulfurous acid into the third filtrate to electrolyze to obtain manganese metal and an electrolytic anode solution. The invention provides an effective approach for recovering manganese resources in the vanadium precipitation wastewater and the vanadium extraction tailings.
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Description

technical field

[0001] The invention relates to a method for extracting manganese metal by utilizing vanadium precipitation waste water and vanadium extraction tailings, belonging to the technical field of metallurgy and chemical industry. Background technique

[0002] In the clean production process of vanadium oxide, the vanadium slag extracted from the converter is used as raw material, and the vanadium oxide product is produced by calcification roasting-sulfuric acid leaching-acid ammonium salt vanadium precipitation process. This process technology solves the problem that the existing sodium salt roasting-water leaching-acid ammonium salt vanadium precipitation process leaching tailings and solid waste sodium sulfate produced by wastewater treatment are difficult to handle, and has the advantage of low wastewater treatment cost. Since the vanadium slag used in the production of vanadium oxide contains not only vanadium, but also a large amount of manganese, after iron r...

Claims

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