DLE Direct Lithium Extraction Technology for Salt Lake Brine

Haipu DLE Lithium Adsorbent & Bipolar Membrane Electrodialysis Equipment

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Salt Lake Lithium Extraction Pain Points & Haipu Solutions

Global brine mining operators face Mg-Li separation, impurity, water & energy cost issues. We provide integrated DLE material & equipment solutions.

Pain 1: Ultra High Mg/Li Ratio Brine

Mg/Li up to 500~3000:1 in South America & Tibet salt lakes. Traditional separation causes heavy lithium loss and low battery-grade purity.

Haipu Solution

5th-gen aluminum & 3rd-gen titanium DLE adsorbent, world first industrial titanium material, lithium recovery 75%~95%, widely used in Argentina 3Q Salt.

Pain 2: Excessive B, Ca, F Impurities

Boron & calcium degrade lithium salts; fluorine corrodes pipelines. Chemical precipitation consumes massive alkali and generates waste salt.

Haipu Solution

HP4010 Ca-Mg resin, HPB119 boron removal resin, HP3500 fluorine resin, no extra chemical additives, effluent impurities ≤5ppm.

Pain 3: Fresh Water & Energy Shortage

Fixed bed & thermal evaporation consume huge water and electricity, restricting sustainable exploitation of inland salt lakes.

Haipu Solution

Low-bed adsorbent + electrodialysis equipment, cut water & evaporation cost over 80%, suitable for arid Latin American mining areas.

Pain 4: Adsorbent Poisoning & Short Lifespan

Common aluminum materials fail in sulfate brine, crack and dissolve frequently, increasing operation cost year-round.

Haipu Solution

HPL162 anti-poison adsorbent runs stably over 1 year, low dissolution loss, stable output under low temperature high altitude conditions.

Pain 5: Discontinuous Fixed Bed Production

Frequent shutdown for regeneration, large resin filling, heavy manual operation and unstable lithium liquid concentration.

Haipu Solution

Rotary & valve array continuous ion exchange system, 24h automatic operation, less resin consumption and stable output.

Pain 6: Single Adsorbent Limitation

Most suppliers only supply aluminum material, cannot fit carbonate, gas field & lithium precipitation mother liquor.

Haipu Solution

Complete aluminum/titanium/manganese adsorbent portfolio, customized formula for all types of salt lake brines.

Bipolar Membrane Electrodialysis - Core DLE Equipment

Bipolar membrane electrodialysis is core supporting equipment for global salt lake DLE projects, solving brine concentration, boron removal and alkali cost problems for South American clients.

Concentrate lithium to over 20g/L, cut evaporation cost 80%
In-line deep boron removal without chemical precipitant
On-site acid & alkali generation, save caustic soda purchasing cost
Low waste discharge, meet Latin America environmental standards
Fully matched with adsorbent purification production line

1. Integrated Salt Lake DLE Solution

Haipu integrates DLE adsorbent, ion membrane and full set equipment, providing customized construction & operation service for overseas lithium mining projects.

1.1 Continuous Ion Exchange System

Rotary valve continuous process realizes 24h uninterrupted adsorption, washing, desorption & regeneration, replace traditional intermittent fixed bed technology.

Full supporting line: filtration, RO/NF, electrodialysis, MVR, resin deep purification, produce LiCl / Li₂CO₃ / LiOH·H₂O.

1.2 Bipolar Membrane Working Principle

Bipolar Membrane Acid-Base Generation Schematic for Salt Lake DLE

Bipolar Membrane Structure Diagram

Bipolar membrane splits water into H⁺ and OH⁻ under DC power, convert brine into acid & alkali without extra chemical additives, matched electrodialysis stack for lithium enrichment and impurity removal.

2. DLE Lithium Extraction Adsorbents & Resins

2.1 Impurity Removal Chelating Resins

HP4010: Ca & magnesium removal, effluent ≤5ppm
HP3500: Fluoride removal down to 1mg/L
HPB119: Selective deep boron removal with low lithium loss

2.2 Aluminum & Titanium DLE Adsorbents

5th-gen aluminum & 3rd-gen titanium adsorbents, world first industrial titanium DLE material.

Series	Model	Size	Application
Aluminum	HPL151 / HPL162	0.2~2mm	High Mg sulfate salt lake, low temp resistant
Titanium	HPL91X	Regular	Carbonate brine, lithium mother liquor
Manganese	Custom	Regular	Low-grade chloride/sulfate brine

2.3 Low Water Consumption Adsorbent Tech

Nano pore small particle material, exchange capacity 400% higher than traditional products, reduce overall system water consumption.

3. Continuous Ion Exchange Equipment

Carousel Rotary System

Stable continuous output, multi-stage one-unit separation, low solvent consumption, easy maintenance & wide brine adaptability.

Valve Array Simulated Moving Bed

High extraction efficiency, flexible parameter adjustment, less resin filling, full automatic control to cut manual error.

2D Membrane & 3D Resin Materials

Self-developed ion exchange membrane break overseas technical monopoly, realize selective ion separation for brine purification.

4. Global Industrial Application Cases

Xinjiang Lop Nor Salt Lake

5,000t/a Li₂CO₃, Li recovery ≥85%

Argentina 3Q Salt Lake

Overseas pilot, 95% lithium recovery

Tibet Laguo Co Salt Lake

20,000t/a, titanium adsorbent project

Qinghai Dongtai Salt Lake

HPL166 adsorbent mass delivery

Qinghai Sulfate Salt Lake

Anti-poison adsorbent stable run

5. One-Stop Overseas Engineering Service

Custom R&D, equipment manufacturing, cross-border delivery, on-site commissioning and long-term after-sales support for Latin America & Central Asia lithium clients.

70%+ R&D staff with master degree
36,000m³ annual adsorbent capacity, 1,000,000㎡ membrane output
20,000㎡ intelligent equipment production workshop
Fast delivery within one month for bulk order

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