Mixed feeding system

By designing a mixing and feeding system, fluorinated alumina is mixed with fresh alumina and transported to the electrolytic flue gas purification system, which solves the clogging problem caused by impurities in the fluorinated alumina and improves purification efficiency and environmental protection effect.

CN224548583UActive Publication Date: 2026-07-24广西华磊新材料有限公司
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Patent Information

Application Number
CN202521424320.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2026-07-24
Estimated Expiration
2035-07-08

AI Technical Summary

Technical Problem

The alumina in the fluorinated alumina bin contains a lot of impurities, which causes blockage in material conveying, affects material supply and environmental emission safety, and makes it difficult to use as an adsorbent for the purification and recycling of electrolytic flue gas.

Method used

A mixing and feeding system is designed to mix fluorinated alumina filtered by a sand removal device with fresh alumina and transport it to an electrolytic flue gas purification system via a pneumatic chute. The high-pressure air source of the pneumatic chute is used as the power source to achieve uniform material conveying and mixing.

Benefits of technology

It improved the efficiency of electrolytic flue gas purification, reduced the amount of fresh alumina to be fed, maintained the alumina concentration in the purification system, and reduced fluoride pollution and fluoride salt consumption.

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Abstract

The utility model discloses a mixed feeding system which comprises a discharging bin I, a discharging bin II, a discharging pipe, a sand removing device and a pneumatic chute system. The discharging bin I is connected with a discharging pipe I, and the discharging pipe I is connected with a pneumatic chute below the discharging pipe I; the discharging bin II is connected with a discharging pipe II, the discharging pipe II is connected with a desanding device, and the desanding device is connected with a pneumatic chute below the desanding device; fresh aluminum oxide and fluorine-loaded aluminum oxide are conveyed to an electrolysis flue gas purification system through a pneumatic chute. According to the utility model, the discharging pipe II and the desanding device are additionally arranged below the discharging bin II, fluorine-loaded aluminum oxide is filtered by the desanding device and then enters the pneumatic chute connected below to be mixed with fresh aluminum oxide for feeding, and the circulating feeding of the fluorine-loaded aluminum oxide is increased, so that the total feeding amount of the purification system is increased; the high aluminum oxide concentration is maintained in the flue gas purification system, the HF purification efficiency of the electrolysis flue gas can be improved, fluorine pollution is reduced, and the unit consumption of fluoride salt produced through electrolytic aluminum is reduced.
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