The by-product salt contains 0.6% lithium – can it be used as a raw material salt for chlor-alkali production?
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Dear experts and engineers: A company that is a friend of ours produces large quantities of sodium chloride as a by-product, with a relatively high lithium ion content of 0.3–0.7%. This level can be reduced to below 0.2% through pretreatment； The electrolyzer can accept it, no!
Hello, lithium can be recovered through adsorption using specialized lithium adsorbents. We are currently carrying out such treatment in salt lakes, and the precision of this process is very high. If you are interested, we can discuss this further. Xi’an Lanxiao Technology, Engineer Tang: 18091822577, 348705481
Currently, lithium ions in brine have high value, and much of it is imported from South America. There are many domestic manufacturers with technologies for lithium extraction from brine.
Chelating resins are primarily used to remove divalent metal ions; they have little effect on monovalent lithium ions. Even if the concentration drops to 0.2% after the pre-treatment step, there is still 200 PPM of it before it reaches the resin column. So it should not be acceptable
This post was last edited by qugd on 2018-5-30 at 15:23. Lithium ions have a very small ionic radius, and this may affect the migration of sodium ions through the membrane during the electrolysis process; it is therefore best to separate and remove these lithium ions, as the recovered lithium ions are of high value. The lithium ion concentration shown has reached 2 g/L, which is quite high; it is feasible to recover it using sodium carbonate precipitation.
If there is a large amount of sodium chloride present, it would be best to be able to recover all that lithium; we have the relevant technologies, and we welcome discussions on this topic. qq371123827