Refined vanadium ultra-low emission production method

A production method and ultra-low technology, applied in the field of vanadium product processing, can solve problems such as continuous feeding and discharging of materials in the sintering process, waste gas treatment and other problems

Active Publication Date: 2020-11-06
湖北成飞科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Refined vanadium ultra-low emission production method
  • Refined vanadium ultra-low emission production method
  • Refined vanadium ultra-low emission production method

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Embodiment Construction

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

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

[0038] The exhaust 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 returns to the sintering kiln 1;

[0039] The exhaust gas after bag dust removal enters a cooling room 61 for secondary cooling after being cooled once;

[0040] After two times of cooling, the waste gas is sprayed three times to complete the separation of ammonia in the wa...

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Abstract

The invention provides a refined vanadium ultra-low emission production method and belongs to the technical field of vanadium product processing. The refined vanadium ultra-low emission production method comprises the following steps that: an ammonium metavanadate filter cake is ground into powder or small-particle-size particles, and the powder or small-particle-size particles are continuously sintered in a sintering kiln at 100-125 DEG C; bag-type dust removal is conducted on waste gas exhausted from the sintering kiln on the premise of heat preservation, and filter residues obtained after bag-type dust removal return to the sintering kiln again; the waste gas subjected to bag-type dust removal is subjected to primary cooling and then enters a primary cooling room to be subjected to secondary cooling; three times of spraying are carried out on the waste gas subjected to two times of cooling to finish separation of ammonia gas in the waste gas; and ammonia-containing wastewater for absorbing the ammonia gas in the waste gas is injected into neutralized water containing sulfuric acid, and therefore, ammonia can be removed. The method has the advantages of being capable of achievingultralow 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 alloy additive that can replace ferrovanadium for 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. Chemical, sintered into vanadium nitrogen alloy. The preparation of vanadium pentoxide is made by sintering and dehydrating ammonium metavanadate. 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 gas) dust is also a core problem. Contents of the invention [0003] The purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(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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