Main Headline: Engineered for Extreme Conditions: Premium HDPE Geomembrane Liners for Heap Leach Pads and Tailings Storage Facilities
Sub-headline: Ensure Maximum Containment, Environmental Safety, and Process Efficiency in Your Hydrometallurgical Operations.
Our High-Density Polyethylene (HDPE) Geomembrane Liners are the industry's gold standard for primary containment in demanding mining and hydrometallurgical applications. Engineered with superior impermeability, exceptional chemical resistance, and unmatched durability, our liners are the critical barrier that protects the environment and safeguards your project's profitability. When failure is not an option, trust our liners to securely contain process solutions, pregnant leach solutions (PLS), and tailings slurries.
1. Heap Leach Pad Liners
The heart of any hydrometallurgical recovery operation, heap leach pads require a liner that can withstand aggressive chemicals, heavy loads, and UV exposure. Our HDPE geomembrane provides a flawless, high-integrity barrier that:
Prevents solution loss: Maximizes recovery of precious metals (gold, silver, copper, uranium) by ensuring leach solution percolates through the ore and is directed to the collection system.
Resists Chemical Attack: Highly resistant to the acidic (e.g., sulfuric acid) or alkaline (e.g., cyanide) solutions used in the leaching process.
Withstands Installation Stresses: Excellent puncture and tear resistance for stability under overliner material and the immense weight of the ore heap.
2. Tailings Dam Liners
Tailings storage facilities (TSFs) represent a long-term environmental responsibility. Our HDPE liners are the preferred choice for base and cap sealing systems due to their:
Superior Impermeability: Effectively contains fine, often chemically reactive, tailings particles and process water, preventing harmful seepage into groundwater aquifers.
Long-Term Performance: Designed with high-quality raw materials (virgin resin) and carbon black for outstanding resistance to UV degradation, oxidative aging, and stress cracking, ensuring performance for decades.
Durability Under Pressure: High tensile strength allows the liner to accommodate settling and subgrade changes within the impoundment.
3. Solution Ponds and Process Channels
From pregnant solution ponds to raffinate channels, our liners ensure that valuable and potentially hazardous process fluids are contained within the designed circuit.
Unmatched Chemical Resistance: Perfectly suited for the harsh, high-strength chemical environments found in heap leaching and tailings management.
Extreme Durability: Exceptional puncture, tear, and abrasion resistance for reliable performance under static and dynamic loads.
Long Service Life: Formulated with premium-grade polyethylene resins and 2-3% carbon black for superior resistance to UV radiation and oxidative degradation, ensuring a lifespan exceeding 30 years.
Low Permeability: Provides an essentially impervious barrier to fluids and vapors, minimizing losses and protecting the environment.
Expert Manufacturing: Produced under strict quality control (QC) protocols to meet or exceed all international standards, including GRI-GM13, ASTM, and ISO.
| Property | Standard Value | Test Method |
|---|---|---|
| Thickness | 1.5 mm, 2.0 mm, 2.5 mm (60 mil - 100 mil) | ASTM D5199 |
| Density | ≥ 0.940 g/cm³ | ASTM D1505 |
| Tensile Properties | ≥ 17 MPa (Yield), ≥ 13 MPa (Break) | ASTM D6693 |
| Elongation at Break | ≥ 700% | ASTM D6693 |
| Puncture Resistance | ≥ 320 N | ASTM D4833 |
| Tear Resistance | ≥ 93 N | ASTM D1004 |
| Stress Crack Resistance | ≥ 500 hrs (ASTM D5397) | ASTM D5397 |
| Carbon Black Content | 2.0 - 3.0% | ASTM D1603 |
Custom thicknesses and formulations (e.g., with Vapor Barrier) are available upon request.
A perfect liner requires a perfect installation. We offer:
Technical Guidance: Our engineering support team can provide guidance on subgrade preparation, seam welding, and testing protocols.
Welding Expertise: We can recommend certified installation crews trained in wedge and extrusion welding techniques for guaranteed seam integrity.
Quality Assurance/Quality Control (QA/QC): We support your project with advice on field test methods, including destructive and non-destructive seam testing.
We are committed to providing products that enable our clients in the mining sector to operate safely and sustainably. By creating a secure containment barrier, our HDPE geomembranes play a vital role in preventing environmental contamination and ensuring regulatory compliance.
