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HDPE Geomembrane Specification
Item | Test Value | ||||||
| RH0.30 mm | RH0.5 mm | RH0.75 mm | RH1.0 mm | RH1.5 mm | RH2.0 mm | RH3.0 mm | |
| Minimum Density(g/cm³) | 0.94 | ||||||
| Strength at yield,N/mm | 5 | 8 | 11 | 15 | 22 | 29 | 44 |
| Strength at break ,N/mm | 8 | 14 | 20 | 28 | 40 | 53 | 80 |
| Elongation at yield,% | 13 | ||||||
| Elongation at break,% | 720min | ||||||
| Tear Resistance N | 40 | 65 | 93 | 125 | 190 | 250 | 375 |
| Puncture Resistance N | 105 | 176 | 240 | 320 | 480 | 640 | 960 |
| Stress Crack Resistance, hrs | 300 | ||||||
| Carbon Black Content, % | 2.0-3.0 | ||||||
| Carbon Black Dispersion | 1 or 2 | ||||||
| Standard OIT Min | 100 | ||||||
| High Pressure OIT Min | 400 | ||||||
| 85ºC Heat aging(OIT Retention rate at Normal pressure after 90d ) % | 85 | ||||||
| UV resistance (OIT retention rate after 1600 hours of UV radiation) | 65 | ||||||
| Impact Cold Crack at -70°C | Pass | ||||||
| Water vapor permeability (g.cm/cm2 .s.Pa) | ≤1.0×10-13 | ||||||
| Dimensional Stability (%) | ±2 | ||||||
The use of HDPE geomembrane for gold mining heap leaching liners is a vital solution to ensure the protection of the environment and the sustainability of the mining operations. The liner plays a critical role in containing the potentially harmful chemicals used in the mining process to avoid seeping into the surrounding areas.
HDPE geomembrane liners have numerous advantages, such as excellent chemical resistance, durability, flexibility, and ease of installation and maintenance. These liners also have a long lifespan and can withstand different climatic conditions, making them an ideal choice for gold mining heap leaching operations.
Moreover, HDPE geomembrane liners reduce the risk of contamination of the groundwater, which is a significant concern in mining operations. By preventing seepage of chemicals into water sources that may affect aquatic life and human health, the use of geomembrane liners is critical in promoting responsible mining practices.
Furthermore, the use of HDPE geomembrane liners reduces the environmental impact of mining activities, providing a sustainable and long-term solution for gold mining companies. The use of geomembrane liners helps in reducing the risk of soil and air pollution, which in turn, prevents environmental degradation.
In conclusion, the use of HDPE geomembrane liners for gold mining heap leaching operations is a positive development for the mining industry. The liner ensures the protection of the environment, reduces the risk of contamination of groundwater, and promotes sustainable mining practices. Therefore, the use of HDPE geomembrane liners is an excellent solution for gold mining companies to adopt
What is heap leaching in gold mining?
Heap leaching is a common method of extracting gold from ore bodies near the surface. This is a simple technique that involves piling crushed ore on a pile and then pouring a liquid solution into the pile to extract the precious metals.
The liquid solution used in heap leaching is usually a weak cyanide solution that dissolves gold particles in the ore. The pile is then left to sit for an extended period of time, usually several months, while the solution drips through the pile and collects in a reservoir at the bottom.
The advantages of heap leach in gold mining are many. First, it is a relatively simple and inexpensive method that requires little technical expertise or equipment. It is also very effective at extracting gold, with recovery rates as high as 90%.
Additionally, heap leaching is environmentally friendly. Rather than using toxic chemicals to extract gold like other mining methods, heap leaching uses a weak cyanide solution that biodegrades easily. Additionally, waste dumps are often located in remote areas, reducing potential impacts on local communities.
In Gold mining heap leaching, what materials used together with geomembrane
The process of gold mining heap leaching requires the use of a variety of materials to ensure a successful operation. One such material is a geomembrane, which is a synthetic lining that helps to prevent the leaching solution from seeping into the surrounding environment.
When used in conjunction with a geomembrane, gold mining companies typically use a range of materials such as:
2. Crushed ore: The gold ore is crushed and then placed on top of the geomembrane lining to create a heap.
3. Leaching solution: A solution of cyanide or other chemicals is sprayed onto the ore to dissolve the gold.
5. Activated carbon: After the gold has been dissolved, activated carbon is introduced to the heap. The carbon absorbs the dissolved gold from the solution.
6. A recovery system: Once the gold has been collected in the activated carbon, it is transported to a recovery system where it is separated from the carbon.
HDPE Geomembrane Packing and Delivery
2. Container transportation, according to your project request.
Tai'an City RuiHeng Building Materials Co., Ltd is specialized in the research, development, production and sales of geosynthetic materials, plastic products and plastic machinery. Our company is devoted to geosynthetic material research and development and application.
The advantages of using HDPE geomembrane include its durability, flexibility, and resistance to chemicals and UV radiation. It is also cost-effective and environmentally friendly.
2. Why is HDPE geomembrane used in gold mining heap leaching liner?
HDPE geomembrane is used in gold mining heap leaching liner because it provides a reliable and chemically resistant barrier for the containment of hazardous chemicals used in the leaching process.
Environmental concerns associated with heap leaching in gold mining include the potential for contamination of groundwater and surface water with hazardous chemicals used in the leaching process.
4. How does HDPE geomembrane help mitigate environmental concerns in gold mining heap leaching?
HDPE geomembrane helps mitigate environmental concerns in gold mining heap leaching by providing a reliable barrier for the containment of hazardous chemicals used in the leaching process.
5. What are the specifications for HDPE geomembrane used in gold mining heap leaching liner?
The specifications for HDPE geomembrane used in gold mining heap leaching liner vary depending on the specific application, but typically include thickness, permeability, and chemical resistance.
