why minerals are mined and processed to extract metals

What happens to ore after it's been mined

Extracted Ore is crushed smelted, a chemical process usually requiring huge quantities of heat at very high temperature, to extract the metal from the mineral that was the ore...

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Processing Is Key Element in US Rare

Jun 11, 2013· Metals industry consultant Gareth Hatch notes that processing is the biggest hurdle for rare-earth mining compani The separations facility at Molycorp's Mountain Pass rare earth mine in California...

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Tungsten: extraction and processing

The common tungsten extraction methods are surface (or open pit) mining and sub-surface (or underground) mining, or a combination of both Modern tungsten processing methods dissolve scheelite and wolframite concentrates by an alkaline pressure digestion, and tungsten can also be recycled from Scrap...

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Mineral Extraction

Mineral extraction sites, which include strip mines, quarries, and underground mines, contribute to surface water and groundwater pollution, erosion, and sedimentation (see Chapter 14) The mining process involves the excavation of large amounts of waste rock in order to remove the desired mineral ore (Fig 126) The ore is then crushed into ....

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How are non

Sep 26, 2012· Digging for rare earths: The mines where iPhones are born How are these unusual minerals extracted from the ground and why is that process an environmental risk?...

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