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PART 02     Proficient in membrane technology and
                                                                      customized processes as needed





 Case 1: Lithium extraction from natural brine  Case 2: Lithium extraction from aged brine

 In July 2021, Yiwei Lithium Energy established a joint venture company Jinhai Lithium Industry   In  2016,  JIUWU  HI-TECH  collaborated  with  Minmetals  Salt  Lake  and  the  Qinghai  Salt  Lake
 (Qinghai) Co., Ltd. in Qinghai with Jinkunlun Lithium Industry, a subsidiary of Dahua Chemical, to   Research Institute of the Chinese Academy of Sciences to conduct research on gradient coupled
 jointly develop lithium resources in Dachaidan Salt Lake.In January 2022, Jinhai Lithium signed a   membrane method for lithium extraction from salt lakes; In 2017, an EPC contract was signed with
 1,000-ton lithium chloride EPC contract with  JIUWU HI-TECH to directly produce high-purity lithium   Minmetals Salt Lake for the 200-ton lithium carbonate project's magnesium lithium separation pilot
 chloride from the natural brine of Dachaidan Salt Lake using the "adsorption + membrane method"   project; In 2018, 10000 tons of lithium carbonate were signed with Minmetals Salt Lake. The contract
 original halide extraction technology.  for the complete set of magnesium lithium separation equipment for the project will only took 8
               months to complete project construction and commissioning, achieving the offline production of
 Main process  the current year's products.

 Pretreatment + Lithium Extraction by Adsorption + Membrane Purification + Evaporation Crystallization.
                Main process
 Technical advantages
               Pretreatment +Membrane Integration (nanofiltration +reverse osmosis) +Electrodialysis +Lithium Precipitation

 · The third generation lithium extraction adsorbent of Jiuwu is adopted to realize the direct lithium
     extraction from the original halogen；  Technical advantages
 · Organic membrane materials produced by JIUWU HI-TECH are adopted, and all key separation materials
    are localized；
 · The first set of domestic salt lake natural brine direct production of high purity lithium chloride, industrial
     plant has a significant demonstration effect.  ·ﾠThe world's first integrated membrane salt lake lithium extraction industrialization device
                    directly separates magnesium and lithium from aged brine through membrane integration
                    process, producing qualified battery grade lithium carbonate;

                · In the field of lithium extraction from salt lakes, this project has set multiple records, including the
                   first filling of industrial magnesium lithium separation technology, the shortest construction period
                   in China, and the largest scale of a single membrane device in Asia.





































 Jinhai Lithium Industry's annual production of 1000t/d battery grade lithium chloride   Minmetals Salt Lake Annual Production 10000t/a Battery Grade Lithium Carbonate Integrated membrane
 "adsorption + membrane method" natural brine lithium extraction project  Method Aged Brine Lithium Extraction Project





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