6 Matching Annotations
  1. Aug 2023
    1. Replacing unabated fossil fuel-based hydrogen with low-emissionhydrogen in refining presents relatively low technical challenges as itis a like-for-like substitution rather than a fuel switch.

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  2. Dec 2020
  3. Jan 2020
    1. large amount of waste rock, tailings, and smelting slags are produced during the Sb mining, processing, and smelting. These are partly used for filling the underground voids and piled up in the waste slack yard. The tailings produced in mineral processing are piped to the tailings dam located in the southwest of the mining area, which is located in the natural depression between two mountain bodies in the southwest of the mining area. Downstream is a large area of farmland, at risk from contamination from tailings release.

      What happens to waste produced during Sb refining.

    1. The pond, owned by the Inner Mongolia Baotou Steel Rare-Earth Hi-Tech Company, or Baotou Steel, lacks a proper lining and for the past 20 years its toxic contents have been seeping into groundwater, according to villagers and state media reports.

      Lanthanum Toxins have been leaking into the ground water which people use for tap water.

  4. Jul 2019
  5. May 2019
    1. The Neodymium metal element is initially separated from refined Rare Earth oxides in an electrolytic furnace. The "Rare Earth" elements are lanthanoids (also called lanthanides) and the term arises from the uncommon oxide minerals used to isolate the elements

      how neodymium is refined