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  2. Hydrometallurgy - Wikipedia

    en.wikipedia.org/wiki/Hydrometallurgy

    Hydrometallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials. [1] [2] Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. Hydrometallurgy is typically divided into three general areas: Leaching

  3. Biohydrometallurgy - Wikipedia

    en.wikipedia.org/wiki/Biohydrometallurgy

    Metallurgy: A process involving the separating and refining of metals from other substances; [4] Bioleaching: Using biological agents (bacteria) to extract metals or soils; [5] general term used to encompass all forms biotechnological forms of extraction (hydrometallurgy, biohydrometallurgy, biomining, etc)

  4. 12 Things That Are Dangerous for Dogs to Eat - AOL

    www.aol.com/12-things-dangerous-dogs-eat...

    Chocolate is another ingredient dogs may ingest when counter surfing. The signs of chocolate poisoning usually appear within six to 12 hours, and symptoms can be wide ranging: vomiting, diarrhea ...

  5. Tank leaching - Wikipedia

    en.wikipedia.org/wiki/Tank_leaching

    The solution drains from the tank, and is either recycled back into the vat or is pumped to the next step of the recovery process. Vat leach units are rectangular containers (drums, barrels, tanks or vats), usually very big and made of wood or concrete, lined with material resistant to the leaching media.

  6. Some pet foods recalled after reports of 28 dog deaths ... - AOL

    www.aol.com/news/pet-food-recalled-reports-28...

    At least 28 dogs have died and another eight have become sick after eating dog food that contained high levels of a toxin called aflatoxin, the Food and Drug Administration said, as some pet foods ...

  7. Heap leaching - Wikipedia

    en.wikipedia.org/wiki/Heap_leaching

    Gold heap leaching. Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials.

  8. Non-ferrous extractive metallurgy - Wikipedia

    en.wikipedia.org/wiki/Non-ferrous_extractive...

    The metal ore is either distilled in an electrolyte or acid solution, then magnetically deposited onto a cathode plate (electrowinning); or smelted then melted using an electric arc or plasma arc furnace (electrothermic reactor). [7] Another major difference in non-ferrous extraction is the greater emphasis on minimizing metal losses in slag.

  9. Gold cyanidation - Wikipedia

    en.wikipedia.org/wiki/Gold_cyanidation

    Challenges include reagent cost and the efficiency of gold recovery, although some chlorination process using sodium hypochlorite (household bleach) have shown promise in terms or reagent regeneration. These technologies are at a pre-commercialisation stage and compare favourably to equivalent cyanidation methods, including gold recovery ...

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