Zinc Ingot

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Pure zinc is a crystalline metal, insoluble in hot and cold water and soluble in alcohol, acids, and alkalies. It is extremely brittle at ordinary temperatures, but becomes malleable between 120° and 150°C (248° and 302°F) and may be rolled into sheets between heated rollers. Zinc is unaffected by dry air; in moist air it is oxidized and becomes coated with a carbonate film that protects it from further corrosion. Zinc melts at about 420°C (about 788°F), boils at about 907°C (about 1665°F), and has a specific gravity of 7.14. The atomic weight of zinc is 65.39. Zinc ranks about 24th in abundance among the elements in Earth’s crust. It never occurs free in nature, but is found as zinc carbonate, ZnCO3, in the mineral smithsonite; as a mixed oxide of zinc and iron, Zn (FeO2) O2, in the mineral franklinite; as zinc sulfide, ZnS, in the mineral sphalerite, or zinc blende; as zinc oxide, ZnO, in the mineral zincite; and as zinc silicate, 2ZnO·SiO2H2O, in the mineral hemimorphite. The ores most commonly used as a source of zinc are smithsonite and sphalerite.

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Hengshui Import and Export Administration Inc

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