Steel slag tailings vanadium extracting process

A process method and tailings technology, applied in the vanadium-containing steel slag tailings extraction process field, can solve the problems of unscientific raw material ratio, unstable vanadium content, unstable recovery rate, etc., and achieve a simple and easy-to-operate vanadium extraction process, Reduce the whole process time and reduce the effect of smelting environment optimization

Active Publication Date: 2014-03-05
LIANGSHAN RUIJING ENVIRONMENTAL PROTECTION RESOURCE DEV
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Problems solved by technology

However, because the raw material structure is relatively single, carrier B is not used in the reduction process, and the ratio of various raw materials is not scientific enough, so the recovery rate of vanadium

Method used

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  • Steel slag tailings vanadium extracting process
  • Steel slag tailings vanadium extracting process
  • Steel slag tailings vanadium extracting process

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Embodiment Construction

[0024] The method for extracting vanadium from steel slag tailings provided by the invention has the following steps:

[0025] A, batching: use steel slag tailings as raw material, add and use with auxiliary material A and carrier B, and its weight percentage is

[0026] Steel slag tailings 40%~65%, auxiliary material A 14%~20%, carrier B 15%~46%;

[0027] B. Put the ingredients into the submerged arc furnace for reduction smelting to obtain low-vanadium pig iron and reduced water slag;

[0028] C. Hot charge the low-vanadium pig iron obtained in step B into a converter in a liquid state, add cooling medium C to extract vanadium by oxygen blowing, and obtain vanadium slag and semi-steel.

[0029] Wherein, the auxiliary material A is composed of coke, silica, and fluorite according to the following weight percentages: 40%-50% of coke, 45%-55% of silica, and 4%-5% of fluorite. The main function is to provide a stable and good reducing environment.

[0030] The carrier B is an...

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Abstract

The invention belongs to the fields of metallurgy and solid waste comprehensive utilization, and in particular relates to a method for extracting vanadium in vanadium-containing steel slag tailings. The invention aims at providing a high-yield and stable process for recovering vanadium and iron in steel slag for comprehensive utilization, value improvement and vanadium resource recovery of low-vanadium steel slag, wherein recovery rates of both vanadium and iron are above 90%. The process comprises steps of A, preparing materials: combing raw material low-vanadium steel slag tailings with an auxiliary material A and a load vector B, wherein the low-vanadium steel slag tailings account for 40-65%, the auxiliary material A accounts for 14-20% and the load vector B accounts for 15-46%; B, reducing and melting various materials in a submerged arc furnace to obtain low-vanadium pig iron and reduced water slag; and C, hot-charging the low-vanadium pig iron obtained from the step B under a liquid status to a converter, adding a coolant C, and implementing oxygen blowing vanadium extraction to obtain vanadium slag and semi-steel. The vanadium extracting process adopts many waste materials in whole using process, and is short in flow, short in time, high in vanadium recovery rate, free from newly generated solid waste, free from discharge of tailings, and energy-saving, and the environment is protected.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of metallurgy and solid waste, and in particular relates to a process method for extracting vanadium from tailings of vanadium-containing steel slag. Background technique [0002] At present, there are mainly three kinds of vanadium extraction from steel slag at home and abroad, wet vanadium extraction, pyrovanadium extraction and solvent extraction. Wet vanadium extraction has developed well, and there are three domestic patents for wet vanadium extraction from steel slag. The process of wet vanadium extraction from steel slag includes crushing, roasting, leaching, precipitation and pyrolysis. However, the wet vanadium extraction requires a large amount of acid solution, which is easy to cause pollution, and has high requirements on the operation process, otherwise the loss rate of vanadium will be high. [0003] The process route of solvent extraction method is generally: preparation o...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B34/22C21B3/04
CPCY02P10/20Y02W30/50
Inventor 戚明强孙堂钦
Owner LIANGSHAN RUIJING ENVIRONMENTAL PROTECTION RESOURCE DEV
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