| metallurgy |
The science of metals and extraction from their ores. Egyptians are known to have smelted iron in 4,000 BC. Lead was probably the first metal that was smelted due to the low heat required. Prior to then, ancient people found gold, silver, etc. in their pure (native) state and made objects from the nuggets.
출처: www.appaltree.net/aba/terms.htm
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| metallurgy |
Concentrate the dilute metal solutions into higher concentration. Smaller volume solutions to be used in electrolytic deposition. (Ex: treatment of low-grade copper ores)
출처: www.facstaff.bucknell.edu/mvigeant/field_guide/kan...
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