Method for extracting aluminum oxide by treating fly ash through nitric acid method
By applying voltage and fluidized roasting technology in the nitric acid solution, the problem of high temperature and high pressure and long-term roasting is solved in the traditional nitric acid method to extract alumina is solved, and efficient and safe aluminum oxide extraction is achieved, with an extraction rate of 91.6-96%.
CN119637916APending Publication Date: 2025-03-18SHENYANG XINBO IND TECH
0 Cites 0 Cited by
Patent Information
- Application Number
- CN202411809726.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-03-18
AI Technical Summary
Technical Problem
The traditional method of extracting alumina by nitric acid requires high temperature and high pressure and long-term roasting, resulting in high equipment investment, high energy consumption and safety hazards.
Method used
The acid leaching method of applying voltage in the nitric acid solution and combined with fluidized calcining technology, the extraction of alumina at 60-100°C and normal pressure was achieved.
Benefits of technology
It improves the extraction rate and production safety of alumina, reduces energy consumption and equipment investment, and shortens the roasting time to seconds.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a method for extracting aluminum oxide by treating fly ash through a nitric acid method, and belongs to the technical field of non-ferrous metallurgy. According to the method for extracting the aluminum oxide by treating the fly ash through the nitric acid method, external voltage is applied during acid leaching, ions in nitric acid are promoted to migrate, the electron obtaining capacity of hydrogen ions is improved, the reaction with the aluminum oxide can be accelerated, the dissolution process is promoted, and therefore leaching of the aluminum oxide at the temperature of 60-100 DEG C under the normal pressure is achieved; the production safety is improved; by adopting fluidized roasting, the mineral activity is improved, the roasting time is shortened to the second level, the energy consumption is reduced, and the production efficiency is improved.
Need to check novelty before this filing date? Find Prior Art