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Aluminum mining waste could be a source of green steel
After the extraction, the remaining waste is less harmful to the environment.
A team of researchers from Germany has now figured out how to handle some of these problems for a specific class of mining waste created during aluminum production. But there have been efforts made to develop "green steel" production in which this step is replaced by a reaction with hydrogen, leaving water as the primary byproduct. Depending on the source of the original aluminum-containing ore, some of this may include relatively high concentrations of valuable materials, such as rare earth minerals.
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