Ion Exchange Resin for Rare Earth Industry

Lanlang^® TY AD680 lithium extraction adsorbent developed by Lanlang is a new polymer synthetic material product. It is the best and most cost-effective product for lithium extraction in salt lakes and mines. It has low operating costs and less capital investment, convenient operation, no three waste discharge and other advantages, and compared with international and domestic similar products, it has the characteristics of high adsorption capacity, good resolution rate and long service life. This will make a milestone contribution to the rapid development of new energy.

In order to ensure that the trace oligomers that may exist in the new adsorbent and the impurities brought in during the filling process are removed without affecting the quality of the product, the following pretreatment operations should be performed before the new adsorbent is officially used:

Backwashing:

After the adsorbent is filled, firstly perform backwashing with clean water (or in a special treatment tank for adsorbents), and the flow rate is controlled at 7-10BV/h (bed volume/hour) to ensure 70% backwashing Expansion rate to remove impurities and tiny particles until the backwash water is clarified, which takes about 0.5 hours;

Soaking:

Stop backwashing, lower the liquid level to 20cm above the highest point of the adsorbent layer, and soak for about 2 hours to make the adsorbent fully fall into the bed;

Washing:

Finally rinse the bed with deionized water at 3-4BV/h, which takes about 3-5 hours.

Be sure the raw brine solution meets the requirements. Then pass the brine solution through the SQ-06Li adsorbent column in a co-current flow of 0.5-3BV/h. The outlet of the adsorbent column is monitored. The outlet is regularly sampled and the lithium concentrations are analyzed. And stop the adsorption when the lithium concentration meets the process requirements.

Recommended adsorption conditions for brines with different lithium concentrations

Lanlang is the member of American Water Quality Association. In 2016, Lanlang obtained WQA Certification with NSF / ANSI61 and 372 standard. And in 2022, Lanlang obtained NSF Certification with NSF/ANSI44 and 42 standard.

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