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Charles Martin Hall (December 6, 1863 – December 27, 1914) was an American inventor, businessman, and chemist.He is best known for his invention in 1886 of an inexpensive method for producing aluminum, which became the first metal to attain widespread use since the prehistoric discovery of iron.
The landfill also accepted 200 cubic yards (150 m 3) of battery casings and 448 short tons (406,000 kg) of aluminum sweat furnace slag. Overall, the landfill contains nearly 5,000,000 cubic yards (3,800,000 m 3) of waste. The waste is covered by a low permeability soil cover.
Reverberatory furnaces (in this context, usually called air furnaces) were formerly also used for melting brass, bronze, and pig iron for foundry work. They were also, for the first 75 years of the 20th century, the dominant smelting furnace used in copper production, treating either roasted calcine or raw copper sulfide concentrate. [1]
Zhang Shiping (25 November 1946 – 23 May 2019) [1] was a Chinese entrepreneur. He oversaw the rise of China Hongqiao Group to become the world's biggest aluminum producer [2] and was dubbed China's "Aluminum King". [1]
Eugene that year designed a furnace to extract zinc from the mine's ores. Two young employees were testing four furnaces in a Cleveland laboratory by 1885. [4] Their first plant was built to extract aluminium, in 1886 using hydropower from a tailrace of Niagara Falls on the Niagara River. [5]
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A metallurgical furnace, often simply referred to as a furnace when the context is known, is an industrial furnace used to heat, melt, or otherwise process metals. Furnaces have been a central piece of equipment throughout the history of metallurgy ; processing metals with heat is even its own engineering specialty known as pyrometallurgy .
Prices for aluminium declined, and by the early 1890s, the metal had become widely used in jewelry, eyeglass frames, optical instruments, and many everyday items. Aluminium cookware began to be produced in the late 19th century and gradually supplanted copper and cast iron cookware in the first decades of the 20th century.
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