Method for restoring ionic rare earth ore ammonium salt leaching site
A technology of ionic rare earth and repair method, which is applied in the repair field of ionic rare earth ore ammonium salt leaching site, and can solve problems such as imbalance of calcium and magnesium nutrient elements, pollution, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0055] After leaching with a certain ammonium salt, the pH value of the rare earth tailings is 3.39, the alkaline hydrolysis nitrogen is 1540mg / kg, the available calcium is 32.89mg / kg, the available magnesium is 17.98mg / kg, and the calcium-magnesium ratio is 1.83.
[0056] Use a salt solution containing calcium and / or magnesium to wash the rare earth tailings after ammonium salt leaching once. The concentration of cations in the salt solution containing calcium and / or magnesium is 0.05mol / L, and the salt containing calcium and / or magnesium The liquid-solid ratio of rare earth tailings after leaching solution and ammonium salt is 0.3m 3 / t; Calcium hydroxide solution is used for secondary leaching, and the liquid-solid ratio of the rare earth tailings after the first leaching is 0.4m 3 / t, the molar concentration of calcium hydroxide is 0.02mol / L, and the pH value is 12.53. The leachate obtained from the two washings is returned to the next ionic rare earth mine for leaching. ...
Embodiment 2
[0060] After leaching with a certain ammonium salt, the pH value of the rare earth tailings is 3.39, the alkaline hydrolysis nitrogen is 1540mg / kg, the available calcium is 32.89mg / kg, the available magnesium is 17.98mg / kg, and the calcium-magnesium ratio is 1.83.
[0061] A salt solution containing calcium and / or magnesium is used to wash the rare earth tailings after ammonium salt leaching. The change of cation concentration in the salt solution containing calcium and / or magnesium is shown in Table 2. Salt solution containing calcium and / or magnesium The liquid-solid ratio of rare earth tailings after leaching with ammonium salt is 0.4m 3 / t; Calcium hydroxide solution is used for secondary leaching, and the liquid-solid ratio of the rare earth tailings after the first leaching is 0.4m 3 / t, the molar concentration of calcium hydroxide is 0.02mol / L, and the pH value is 12.53. The leachate obtained from the two washings is returned to the next ionic rare earth mine for leach...
Embodiment 3
[0065] After leaching with a certain ammonium salt, the pH value of the rare earth tailings is 3.39, the alkaline hydrolysis nitrogen is 1540mg / kg, the available calcium is 32.89mg / kg, the available magnesium is 17.98mg / kg, and the calcium-magnesium ratio is 1.83.
[0066] Use a salt solution containing calcium and / or magnesium to wash the rare earth tailings after ammonium salt leaching once. The concentration of cations in the salt solution containing calcium and / or magnesium is 0.05mol / L, and the salt containing calcium and / or magnesium The change of the liquid-solid ratio of the rare earth tailings after the solution and ammonium salt leaching is shown in Table 3; the calcium hydroxide solution is used for secondary leaching, and the liquid-solid ratio of the rare earth tailings after the first leaching is 0.4m 3 / t, the molar concentration of calcium hydroxide is 0.02mol / L, and the pH value is 12.53. The leachate obtained from the two washings is returned to the next ionic ...
PUM
Abstract
Description
Claims
Application Information
- 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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com