Lithium Industry Technology Achievements-ZANGGE MINING COMPANY LIMITED

World’s First High Magnesium-to-Lithium Ratio Lithium Extraction Technology:
 The company has pioneered the industrial-scale extraction of lithium from brine with a high magnesium-to-lithium ratio (≥2000:1) and ultra-low lithium concentration (20–50 mg/L), successfully establishing a production facility with an annual capacity of 10,000 tons. By selecting highly selective adsorbents combined with a continuous moving-bed adsorption process, the annual adsorbent loss rate is only 5%, reducing the amount of adsorbent used by over 50%.
One-Step Direct Synthesis of Battery-Grade Lithium Carbonate:
 Through precise control of the carbonation reaction phase diagram, the process directly produces high-quality lithium carbonate that meets the “Brine Battery-Grade Lithium Carbonate” standard (GB/T 23853-2022), achieving a purity of over 99.7%, thereby avoiding secondary carbonation or caustic processing.

Patents and Intellectual Property

26

Patent Applications
4

Granted Invention Patents
7

Granted Utility Model Patents
1

Computer Software Copyrights
2

Participation in Standards Formulation: 1 national standard, 1 group standard

Adsorption device for efficient lithium extraction from lithium precipitation mother liquor using titanium-based adsorbent

Lithium extraction brine adsorption resin loading device

Vibration feeding device for undried lithium carbonate semi-finished product

Lithium carbonate slurry conveying pipeline device

Electrodialysis composite ion exchange device for boron ion removal

Impurity control system and method for lithium-containing solution in salt-lake lithium extraction process

Method for preparing borax from boron-containing wastewater discharged from electrodialysis process

Method for producing high-purity borax from boron-containing wastewater in lithium carbonate production from salt lakes

Continuous magnetic removal system for lithium carbonate slurry based on electromagnetic induction

Device for recovering adsorbent in ultra-low lithium concentration brine extraction process

Method for impurity removal and lithium extraction from ultra-low concentration lithium brine

System Certificates
Engineering Awards
Project Awards
Municipal and Park-Level Awards

Intellectual Property Compliance Management System Certification
Integration of Informatization and Industrialization Management System Certification

The Feasibility Study Report for Phase I of the 20,000 t/a Lithium Carbonate Project, Ge’ermu Zangge Lithium Co., Ltd. won the 2020 National Excellent Engineering Consulting Achievement Award – Excellence Award. The Phase I of the 20,000 t/a Lithium Carbonate Project, Ge’ermu Zangge Lithium Co., Ltd. won the 2022–2023 Second Batch of Anhui Province Excellent Survey and Design Quality Demonstration Project – First Prize in Industrial Engineering Design (Comprehensive Category).

Industrial Engineering Design (Comprehensive Category) First Prize Certificate
Engineering Consulting Achievement Excellence Award Certificate

Feasibility Study Report of Phase I of 20,000-ton/year Lithium Carbonate Project of Ge’ermu Zangge Lithium Co., Ltd. won the 2020 National Excellent Engineering Consulting Achievement Award – Excellence Award. Phase I of the same project won the First Prize in the Industrial Engineering Design Comprehensive Category of the 2022-2023 Second Batch Anhui Province Excellent Survey and Design Quality Demonstration Project.

Research and application of key technology for “one-step” production of battery-grade lithium carbonate from ultra-low concentration lithium brine
Second Prize of the Science and Technology Progress Award
Pilot study on lithium extraction from carbonate-type lithium precipitation mother liquor using titanium-based adsorbent

2018 Innovation-Driven Circular Development (Outstanding Enterprise)
2021 CITIC Bank Cup (Maker China & “Chuang Qing Chun” Qinghai Province Innovation and Entrepreneurship Competition – Haixi Region)
Science and Technology Enterprise Titles (Honor Certificates)
Honorary Title of “Innovative SME in Qinghai Province”
2022 Excellent Enterprise
2018 Outstanding Contribution Advanced Enterprise
2019 CITIC Bank Cup (Qinghai Province Innovation and Entrepreneurship Competition) – Silver Award
November 2019 China Youth Innovation and Entrepreneurship Competition – Bronze Award

Patents and Intellectual Property

26

4

7

1

2

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