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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.
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]
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 ]
As blast furnaces re-equipped after World War II, the favoured power source was either the diesel engine or the electric motor. These both had a rotary output, which worked well with contemporary developments in centrifugal fans capable of handling the huge volumes of air. Although the reciprocating steam blowing engine continued where it was ...
Minet thought Cowles was the first great advance in electrometallurgy at least for many years, calling it a "practical" furnace yielding alloy up to 20 percent aluminum. The first was begun in 1884 and the best was tested in Cleveland in 1886.
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