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Company Introduction

Zhengzhou Tiei Extraction Technology Co., Ltd has been deeply engaged in the industry of salt lake resource comprehensive utilization for many years. Relying on unique process technology and equipment, Tiei provides integrated solutions for salar or mining company including analysis and testing of brine, process R&D and verification, technology and technical service, lithium extraction equipment etc. After years of development, we have accumulated rich experience in lithium extraction from ores, natural brine, concentrated brine and lithium precipitation mother liquor etc. In order to better serve our customers,our process R&D team have developed the solvent extraction technologies that are more suitable for the comprehensive utilization of salar resources.

2012

Established

LLE

Focus on

DLE

Solution provider

Details

Brine

Extraction

Washing

Stripping

LiCl,LiOH,Li2CO3

Liquid liquid extraction(LLE), or Solvent Extraction(SX) means that transferring Lithium contained in Brine to another immiscible liquids(solvent). The solvent that is enriched in lithium is called loaded organic phase, the residual brine that is depleted in lithium is called raffinate.

The entire process consists of 3 parts

Extraction

The brine after pretreatment will go to extraction section. The lithium content in the raffinate is less than 10ppm, and the extraction rate is higher than 98%.

Washing

The loaded organic phase will be washed to remove the useless impurities, and the washing solution will be returned to the extraction section.

Stripping

After washing, the loaded organic phase is mixed with stripping agent(solution) for back-extraction(stripping). The lithium content in the stripped solution is higher than 35g/L. The organic solvent after stripping will go back to the extraction section for recycling use.

We Provide different solutions for different composition of salar brine.

TIei Extraction® can provide both technology and equipment for the extraction of boron, lithium,calcium, Magnesium, potassium etc. by liquid liquid solvent extraction technology.

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Process Characteristics

Small space utilization for extraction system

Recyclable extractant with minimal initial input

High recovery rate for boron and lithium，resulting in low overall costs

High selectivity of extractant，high purity of stripped solution

Favorable operating environment

Lithium Extraction

Lithium recovery rate ＞99%
Lithium in remaining water ＜0.1g/L
Lithium concentration in the stripped LiCl solution 25- 30g/L
other ion concentration ＜1g/L

lithium

6.941

Boron Extraction

Boron recovery rate＞99.7%
Boron in remaining water＜0.015g/L
Boron concentration in the stripped boric acid solution reaches 8-10g/L, other ion concentration is less than 0.01g/L

boron

10.811

The advantage of our Direct lithium Extraction Technology

Green

Clean

Efficient

High direct extraction rate

Low consumption of fresh water

High purity of product

Shorter construction period

Lower OPEX

Adopting efficient and novel extractants to efficiently separate and extract lithium from brine, the lithium extraction rate can reach to

The consumption of fresh water can be reduced by

The purity of products can be

The construction period of industrial DLE production line only takes

The OPEX can be reduced by

98%+

50%

99%+

a few months

40%

What We Provide

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R&D

R&D team of 60 people, with strategic partnership established with Beijing General Research Institutes of Mining and Metallurgy, Harbin Institute of Technology (Weihai), Zhengzhou University, Central South University, and the Institute of Process Engineering of the Chinese Academy of Sciences, among other prestigious universities and research institutes. After years of research and development , we have accumulated rich experience in lithium extraction from ores, natural brine,concentrated brine, and lithium precipitation mother liquor etc. Our team developed our own DLE technology, and continuously develop different processes for different types of salt lakes , and optimize them. Accumulated 103 patent applications, including 10 authorized inventions, 39 utility models, and 9 design patents.

Pilot Plants

We established two pilot test plants with kg-level capacity and one pilot plant with ton-level capacity. This pilot plant can help the mining companies to do analysis and testing of brine samples and conduct direct lithium extraction Process development and verification

Overall solution of direct lithium extraction by solvent extraction technology(EPC , EPC+O etc.)

Our thousand tons industrial lithium extraction plants has been working since the year of 2021 . It works stably and perfect till now.

Service Process

Step 1

Analysis and tests of brine sample

Customer send their brine sample to our laboratory. Our engineer will analyze and test the brine samples, then design a direct lithium extraction plan based on the composition of customer's brine. At the same time, we will give the proposal to optimize the process and improve the economic indicators. The documents we will give: 1. Brine chemistry composition table 2. Simple process flowchart 3. Mass balance table 4. Overall proposal