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Geosynthetic clay liners: An effective and efficient solution
| 题名： | Geosynthetic clay liners: An effective and efficient solution |
| 正文语种： | eng |
| 作者： | Michael Kozak |
| 作者单位： | MineralsTechnologies Inc. |
| 摘要： | Nestled in the Midas Trench lineament on the northwest side of the Humboldt Range, numerous mines take full advantage of their proximity to the basin and ridge frontal faults that serve as conduits for gold-bearing hydrothermal fluids. In 2020, CETCO was contacted by a mine in this region to assist with its heap leach pad expansion. The mine sits at an elevation of nearly 7,000 feet (2,134 m) and uses an open-pit/heap leaching process to extract gold, silver, mercury and other commodities. Since 1986, the 35-acre (14-h) mine has produced 2.4 million ounces (68 million g) of gold, with recent yearly yields of more than 235,000 ounces (6.7 million g). Modern heap leach pads are large, engineered structures lined with an impermeable geosynthetic membrane placed over a prepared surface, usually a compacted clay layer. Ore is placed (heaped) on the lined pad and treated with chemicals to dissolve (leach) the gold. The plastic liner placed at the bottom and around the sides of the pad prevents chemicals from leaking into the soil and contaminating groundwater. |
| 出版年： | 2023 |
| 期刊名称： | Geosynthetics |
| 卷： | 41 |
| 期： | 2 |
| 页码： | 28-33 |
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