PROCESS FOR OBTAINING LITHIUM FROM ALUMINOSILICATES AND INTERMEDIATE COMPOUNDS

摘要

Process for obtaining lithium compounds and intermediate compounds, comprising the following steps: a) contacting aluminosilicate particles, for example α-spodumene, with at least one fluorine compound, for example HF, NaF or others; b) stirring the mixture increasing the temperature until reaching an appropriate temperature; c) carrying out at least a precipitation and filtration process of the mixture of step b), and, d) recovering the lithium compound. The process may comprise using HF at a concentration between 5 and 30% v/v or NaF at a concentration between 5 and 30% w/v; a solid/liquid ratio of step a) between 0.9 and 14.4% w/v; a particle size of between 29 and 200 μm. The final lithium product of the process may be lithium carbonate or lithium fluoride.

主权项

1. Process for obtaining lithium compounds, the process comprises at least the following steps:
a) contacting aluminosilicate particles with at least one fluorine compound; b) stirring the mixture while heating until reaching a temperature above 50° C.; c) carrying out at least a precipitation and filtration process of the mixture of step b); and d) recovering the lithium compounds.