A kind of in-situ leaching seepage interception method of weathering crust leaching type rare earth ore
A weathering crust leaching type, in-situ leaching technology, applied in the direction of improving process efficiency, can solve the problems of leakage, pollution, environmental resources, waste, etc., and achieves improvement of ammonia nitrogen wastewater pollution, convenient operation, and is conducive to the protection of the ecological environment Effect
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Embodiment 1
[0022] For a weathering crust leaching type rare earth mine in Jiangxi, the thickness of the weathering crust is about 18 meters. The bottom of the deposit has unweathered bedrock as a false floor, and the false floor is above the groundwater table. It is suitable for in-situ leaching to recover rare earths. The in-situ leaching seepage interception method includes the following steps:
[0023] In the valley at the bottom of the mine, look for the confluence (catchment surface) of leachate leakage, and build a first-level interception pool; the pool surface of the interception pool has a fan-shaped structure and an inclination angle of 60 degrees relative to the horizontal plane, and the bottom needs to be compacted to ensure that it does not collapse. The upper piece of thick plastic film is used as a water-proof material cloth, and it is spread from the bottom to the downstream dam in a funnel shape, so that the seepage leachate can seep into the interception pond; there are ...
Embodiment 2
[0026] For a weathering crust leaching type rare earth mine in Guangdong, the thickness of the weathering crust is about 15 meters, and the bottom of the deposit has unweathered bedrock as a false floor, and the false floor is above the groundwater table, so it is suitable to use in-situ leaching to recover rare earths. Its in-situ leaching seepage interception method includes the following steps:
[0027] In the valley at the bottom of the mine, look for the confluence (catchment surface) of leachate leakage, and build a first-level interception pool; the bottom of the interception pool needs to be tamped to ensure that it does not collapse, and a thick plastic film is spread as a water-proof material cloth. It has been paved to the downstream dam, and the other three sides are in a fan-shaped structure, and the pool surface of the interception pool maintains a natural state of 60 degrees downward inclination relative to the horizontal plane, so that the seepage leachate can s...
Embodiment 3
[0030] The thickness of the weathering crust leaching type rare earth ore deposit in Panwa, China-Myanmar border is about 25 meters. The bottom of the deposit has unweathered bedrock as a false floor, and the false floor is above the groundwater table, so it can be recovered by in-situ leaching. Rare earth, its in-situ leaching seepage interception method includes the following steps:
[0031]In the valley at the bottom of the mine, look for the confluence (catchment surface) of leachate leakage, and build a first-level interception pool; the bottom of the interception pool needs to be tamped to ensure that it does not collapse, and a thick plastic film is spread as a water-proof material cloth. It has been paved until the other three sides of the small dam are in a fan-shaped structure, and the pool surface of the interception pool maintains a natural state of 60 degrees downward inclination relative to the horizontal plane, so that the seepage leachate can seep into the inter...
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