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Smelting involves more than just melting the metal out of its ore. Most ores are the chemical compound of the metal and other elements, such as oxygen (as an oxide), sulfur (as a sulfide), or carbon and oxygen together (as a carbonate). To extract the metal, workers must make these compounds undergo a chemical reaction.
The smelting of copper, lead and bauxite in non-ferrous smelting, for instance, is designed to remove the iron and silica that often occurs with those ores, and separates them as iron-silicate-based slags. [1] Copper slag, the waste product of smelting copper ores, was studied in an abandoned Penn Mine in California, US.
Melting metal in a crucible for casting A metal die casting robot in an industrial foundry. Melting is performed in a furnace. Virgin material, external scrap, internal scrap, and alloying elements are used to charge the furnace. Virgin material refers to commercially pure forms of the primary metal used to form a particular alloy.
A penny, on its face, is worth one cent. $0.01 U.S. dollars. On the other hand, that same penny -- if melted down for the copper it contains -- could be worth quite a bit more. Due to the fact ...
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The purest copper is obtained by an electrolytic process, undertaken using a slab of impure copper as the anode and a thin sheet of pure copper as the cathode. The electrolyte is an acidic solution of copper (II) sulfate. By passing electricity through the cell, copper is dissolved from the anode and deposited on the cathode. However ...
The Tennants were wary of having a waste dump so close to the farm. But DuPont assured them it would only dispose of non-toxic material like ash and scrap metal, and so they agreed to sell. Shortly after the deal closed, Jim and Della, whose home abutted the new landfill, say their two young daughters started wheezing and hacking.
The Quincy Smelter is the only remaining copper smelter in the United States from the early 20th century. [29] It is described by the EPA as the "best preserved copper smelter" in the United States, [30] and by the Keweenaw National Historical Park Advisory Commission as possibly the only remaining copper smelter in the world of its era. [29]
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