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A kind of ultra-low emission production method of refined vanadium

An ultra-low, production system technology, applied in the field of vanadium product processing, can solve the problems of waste gas treatment, continuous feeding and discharging of materials in the sintering process, etc., and achieve the effects of not easy bonding, large heating surface, improved heat utilization and sintering efficiency

Active Publication Date: 2022-07-01
湖北成飞科技股份有限公司
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Problems solved by technology

In the prior art, during the preparation process of vanadium pentoxide by dehydration and deammoniation, the sintering process cannot achieve continuous feeding and discharging, and the treatment of waste gas (ammonia) dust is also a core problem

Method used

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  • A kind of ultra-low emission production method of refined vanadium
  • A kind of ultra-low emission production method of refined vanadium
  • A kind of ultra-low emission production method of refined vanadium

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Embodiment Construction

[0036] The following are specific embodiments of the present invention and combined with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0037] The ultra-low emission production method of refined vanadium comprises the following steps: figure 1 As shown, the ammonium metavanadate filter cake is ground into powder or small particle size particles, and is continuously sintered in the sintering kiln 1 at 100-125 °C;

[0038] The waste gas discharged from the sintering kiln 1 is subjected to bag dust removal under the premise of heat preservation, and the filter residue of the bag dust removal is returned to the sintering kiln 1;

[0039] The waste gas after bag dust removal is cooled once and then enters a cooling room 61 for secondary cooling;

[0040] The exhaust gas after cooling twice is sprayed three times to complete the separation of ammonia in the exhaust gas;...

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Abstract

The invention provides an ultra-low emission production method of refined vanadium, which belongs to the technical field of vanadium product processing. The ultra-low emission production method of refined vanadium includes the following steps: grinding and dispersing the ammonium metavanadate filter cake into powder or small particle size, and sintering continuously in a sintering kiln at 100-125°C; On the premise of bag dust removal, the filter residue of bag dust removal is returned to the sintering kiln; the waste gas after bag dust removal is cooled once and then enters a cooling room for secondary cooling; the waste gas after twice cooling is sprayed three times to complete the waste gas Separation of ammonia gas; ammonia-containing wastewater used to absorb ammonia gas in waste gas is injected into neutralized water containing sulfuric acid for ammonia removal. The present invention has the advantages of being able to realize ultra-low emission and the like.

Description

technical field [0001] The invention belongs to the technical field of vanadium product processing, and relates to an ultra-low emission production method of refined vanadium. Background technique [0002] Vanadium-nitrogen alloy is a new alloying additive that can replace ferrovanadium in the production of microalloyed steel. The main raw material of vanadium-nitrogen alloy is vanadium pentoxide (commonly known as refined vanadium). Vanadium-nitrogen alloy usually uses vanadium pentoxide, carbon powder and additives as raw materials. It is sintered and sintered to form a vanadium-nitrogen alloy. The preparation of vanadium pentoxide is made by sintering and dehydrating ammonium metavanadate. In the prior art, in the preparation process of dehydration and deamination of vanadium pentoxide, the sintering process cannot realize continuous feeding and discharging, and the treatment of waste gas (ammonia) dust is also a core problem. SUMMARY OF THE INVENTION [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/02B01D46/42B01D53/58B01D53/78
CPCB01D46/02B01D53/78B01D53/58B01D46/42Y02A50/20
Inventor 宋伟雄邹明俊张尔明
Owner 湖北成飞科技股份有限公司
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