Method for chemically separating bastnaesite and urdite from mixed rare earth concentrate
A mixed rare earth and bastnaesite technology, which is applied in the direction of improving process efficiency and the like, can solve the problems of unresearched smelting of mixed rare earth ore with high monazite, and achieve the effects of low cost, industrialization and simple method.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] Take 1Kg of Baotou mixed rare earth concentrate, in which the ratio of bastnaesite to monazite is 3:1, the rare earth content is 50.6%, and 800 mL of water is added to make slurry. Take 395g of anhydrous aluminum chloride, add it into 370mL of water, make it dissolve, and make a solution of 8mol / L. Take 950 mL of 10 mol / L HCl. AlCl 3 solution and HCl solution were added to the slurry of rare earth concentrate, stirred at 75°C for 60 minutes, filtered and washed with water for 3 times, and dried to obtain a solution containing rare earth after bastnaesite decomposed and monazite-rich filter residue. After testing the filtrate 2420mL, the rare earth concentration is 180.2g / L, the leaching rate of bastnaesite is 96.5%; the filter residue weighs 345g, and the rare earth content is 33.9%.
Embodiment 2
[0027] Take 1Kg of Baotou mixed rare earth concentrate, in which the ratio of bastnaesite to monazite is 3:1, the rare earth content is 50.6%, and 500 mL of water is added to make slurry. Take 880g of boric acid, add it into 2840mL of water, heat to make it dissolve, and make a 5mol / L solution. Take 1190mL of 6mol / L HCl. Add boric acid solution and HCl solution to the slurry of rare earth concentrate, stir at 60°C for 180 min, filter and wash the filter residue with water for 3 times, and dry the filter residue to obtain the solution containing rare earth after bastnaesite decomposes and rich Filter residue of monazite. The detected filtrate was 4850mL, the concentration of rare earth was 76.6g / L, and the leaching rate of bastnaesite was 93.6%; the weight of filter residue was 364g, and the content of rare earth was 37.5%.
Embodiment 3
[0029] Take 1Kg of Baotou mixed rare earth concentrate, in which the ratio of bastnaesite to monazite is 3:1, the rare earth content is 50.6%, and 500 mL of water is added to make slurry. Take 685g of aluminum nitrate, add it into 460mL of water, make it dissolve, and make a 7mol / L solution. Take 8mol / L HNO 3 1200mL. Aluminum nitrate solution and HNO 3 Add the solution to the rare earth concentrate slurry, stir at 50°C for 150 minutes, filter and wash the filter residue with water three times, and dry the filter residue to obtain a rare earth-containing solution after bastnaesite decomposition and a monazite-rich filter residue respectively. After testing the filtrate 2600mL, the rare earth concentration was 143.8g / L, the leaching rate of bastnaesite was 94.2%; the filter residue weighed 368g, and the rare earth content was 34.2%.
PUM
Login to view more Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap