Aluminum
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Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth’s crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.
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Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Oxidation states: −4, −2, −1, 0, +1, +2, +3, +4, … Atomic number (Z): 24 Atomic radius: empirical: 128 pm When liquid (at m.p.): …
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Zircon (zirconium silicate) sands are naturally occurring, rounded sands used in foundry, ceramic, refractory, and precision investment casting applications. They are critical components in the production of glazes, ladle brick, wall tiles, coatings, shell molds and cores, and metal chills.
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Steam coal (sometimes called thermal coal) is a grade of coal used in electric power plants to generate steam to create electricity. Most of the coals mined in the United States are steam coals. Steam: Coking coal, also known as metallurgical coal, has low sulfur and phosphorus content and can withstand high heat.
