"Hao" product - Special Geomembrane for salt lake mines

      Special geomembrane for salt lake mines

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                                                      Common Challenges in the Application of Geomembrane

High salt content corrosion 

The high concentrations of sulfates and chlorides in the brine of salt lakes will accelerate the aging of HDPE membranes. Long-term immersion can cause local swelling or a decline in chemical stability. 

 Acidic/Alkaline Medium Erosion 

The acidic wastewater from mines (with a pH value less than 3) or the alkaline environment of salt lakes cause the micropores of the membrane material to expand and the additives to precipitate, thereby reducing its flexibility and water resistance. 

Insufficient puncture resistance 

The salt crystals at the bottom of the salt lake are sharp, and the waste rock from the mines has many sharp edges. The HDPE membrane (especially when the thickness is less than 1.5mm) is prone to being punctured, and therefore, a composite geotextile or an additional protective layer is required.

                                Characteristics of Geomembrane Specifically Designed for Salt Lake Mines

1. Compared with traditional geomembrane

The tensile strength has been increased by 20%, and the impact resistance has been enhanced by 60%. 

The puncture resistance has been enhanced by 50%, and the wear rate has been reduced by three times.

2. Additional Benefits 

Low friction coefficient (reduces construction wear and tear); 

Self-lubricating property (extends service life). 

3. Chemical barrier 

Resist corrosion from high-concentration brine, ensuring zero leakage for over 20 years. 

4. Physical Protection 

Resistant to salt corrosion, resistant to sand abrasion, suitable for extreme environments. 

5. Stable and durable 

Wide temperature range adaptability + UV resistance for aging prevention, meeting the full life cycle requirements of salt lakes. 

6. Environmental Compliance 

Meet the strict requirements of the "Environmental Protection Specifications for Salt Lake Brine Mineral Development" (GB/T 38582-2020). 

7. Safety and Reliability 

Resistant to puncture, tear and chemical corrosion, ensuring "zero leakage" in extreme environments. 

8. Extremely long lifespan 

Excellent wear resistance and anti-aging properties, synchronized with the mining operation cycle, avoiding the need for mid-process replacements. 

9. Adapt to complex loads 

Resisting settlement, mechanical compaction and temperature stress, its stability far exceeds that of traditional materials.

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