In Hezhang in the Guizhou province in southwest China, an indigenous zinc-smelting method, which resulted in severe heavy metal pollution, has been used for more than a century [ 24, 25].
Smelting: smelt iron ingot from a block of iron ore.
Another alternative iron-making method, smelting reduction, had its forerunners in the electric furnaces used to make liquid iron in Sweden and Norway in the 1920s.
Also, graphic paper cups; Nokia cell phones; various cruise ships; Kone, one of the world's largest elevator companies; and a patented method for smelting copper.
During the early 19th century, ironworkers in Great Britain believed that a blast of cold air was the most efficient method for smelting iron.
Modern industry originated in the early 18th century, when Abraham Darby came to Coalbrookdale, in present-day Telford and Wrekin, and developed his method of smelting ironstone with coke.
Pittsburgh Reduction Company was founded by a group of young men that included Charles Martin Hall, who in 1886 had been the first American to succeed in developing a commercially cheap method of smelting aluminum by electrolysis.
Moreover, the physical and chemical properties of FNS can vary significantly with the type of source ore, smelting temperature and cooling method.
Agricola, on the other hand, was a miner and an extractive metallurgist; his book considered prospecting and surveying in addition to smelting, refining, and assay methods.
