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Lecture: Mining

Explore the world of mining, from different types of mines to the refining processes involved in extracting valuable minerals. Learn about techniques like magnetism, density separation, and chemical dissolution. Discover how electrolysis and metal displacement play a role in refining minerals.

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Lecture: Mining

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Presentation Transcript

  1. Lecture: Mining Mine: A place where minerals and ores come from..

  2. Vein: A body of a mineral inside a fissure

  3. Types of Mines: • Underground- A mine which are below the surface of the Earth. • Surface- A mine which removes the soil above it to expose the desired mineral below. • Surface mines scar the Earth’s surface, cover fertile land, and metal ores that are not used, are dissolved and leach into the local water sources.

  4. Refining Processes Magnetism: The use of a magnet to find out if you have iron, nickel, or cobalt. Density: Separation of the dense minerals from the less dense ones.

  5. Chemical: The use of a chemical to dissolve the desired mineral into a liquid. Especially useful if the mineral has a high solubility in a solvent.

  6. Refining Processes Continued Filtration: The separation of a solid from a liquid.

  7. Electrolysis The process in which a chemical reaction occurs when an electrical current passes through an electrolyte solution (A solution that has ions in it).

  8. Refining Processes Continued Metal Displacement: A chemical reaction process when one atom or ion of one substance replaces one atom or ion of another.

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