The major uses of zinc metal are in galvanizing iron and steel against corrosion and in making brasses and alloys for die-casting. For specific information on the mining, recovery, and refining of zinc, see zinc processing. Zinc is won from the leach solution by electrolysis or is condensed from the blast furnace gas and then distilled of impurities. Metallic zinc is produced by roasting the sulfide ores and then either leaching the oxidized product in sulfuric acid or smelting it in a blast furnace. Zinc functions in the hemosycotypsin of snails’ blood to transport oxygen in a way analogous to iron in the hemoglobin of human blood. Zinc deficiency in nut-bearing and fruit trees causes such diseases as pecan rosette, little leaf, and mottle leaf. Zinc is a component of some enzymes that digest protein in the gastrointestinal tract. The zinc present in the pancreas may aid in the storage of insulin. Zinc is an essential trace element in the human body, where it is found in high concentration in the red blood cells as an essential part of the enzyme carbonic anhydrase, which promotes many reactions relating to carbon dioxide metabolism. For zinc’s mineralogical properties, see native element. Native zinc has been reported from Australia, New Zealand, and the United States, and the leading early 21st-century producers of zinc are China, Australia and Peru. The chief zinc mineral is the sulfide sphalerite (zinc blende), which, together with its oxidation products smithsonite and hemimorphite, constitute nearly all of the world’s zinc ore. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!Ī little more abundant than copper, zinc makes up an average of 65 grams (2.3 ounces) of every ton of Earth’s crust.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives. ![]() ![]() Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.
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