Vanadium extracting converter slag adjusting method

A converter and slag adjustment technology, applied in the manufacture of converters, etc., can solve the problems of increasing silicon content in molten steel, expensive ferrosilicon, increasing heat, etc., and achieve the effects of reducing steel material consumption, obvious price advantage, and lowering melting point
CN106521078AInactive Publication Date: 2017-03-22PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a vanadium extracting converter slag adjusting method, and belongs to the technical field of converter vanadium extraction. The technical problem to be solved by the invention is to provide the vanadium extracting converter slag adjusting method capable of further reducing the iron loss. The method comprises the following steps: molten vanadium-titanium contained iron is mixed into a converter; a sodium salt modifying agent is added within one minute before ending of blowing; and after the blowing is finished, the tapping is performed to obtain semisteel and vanadium slag. Before the blowing is finished, the sodium salt modifying agent is adopted to adjust the slag; and the converter vanadium slag components can be controlled within a proper range before tapping of the converter, so that the purposes of reducing the vanadium slag melting point, optimizing the vanadium slag slag-iron separation effect and reducing the steel-iron consumption are achieved.
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Description

technical field

[0001] The invention relates to a method for adjusting slag in a vanadium-extracting converter, and belongs to the technical field of vanadium-extracting converter. Background technique

[0002] The main principle of vanadium extraction is to use the principle of selective oxidation, using high-speed pure oxygen jet to stir the vanadium-containing molten iron in the top-blown converter, and oxidize the vanadium in the molten iron into high-priced and stable vanadium oxides to prepare vanadium slag. chemical reaction process. During the reaction process, the temperature of the molten pool is controlled below the conversion temperature of carbon and vanadium by adding a coolant, so as to achieve the purpose of "removing vanadium and preserving carbon".

[0003] The oxidation reaction of vanadium is:

[0004] 2 / 3[V]+1 / 2{O 2}=1 / 3(V 2 o 3 ) (1)

[0005] 2[V]+3(FeO)=(V 2 o 3 )+3[Fe] (2)

[0006] Vanadium has two reactions under the condition of oxygen blow...

Claims

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