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Advances in Understanding of Unit Operations in Non-ferrous Extractive Metallurgy 2021

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Abstract
Unit metallurgical operations processes are usually separated into three categories: 1) hydrometallurgy (leaching, mixing, neutralization, precipitation, cementation, and crystallization); 2) pyrometallurgy (roasting and smelting); and 3) electrometallurgy (aqueous electrolysis and molten salt electrolysis). In hydrometallurgy, the aimed metal is first transferred from ores and concentrates to a solution using a selective dissolution (leaching or dry digestion) under an atmospheric pressure below 100 °C and under a high pressure (40-50 bar) and high temperature (below 270°C) in an autoclave. The purification of the obtained solution was performed using neutralization agents such as sodium hydroxide and calcium carbonate or more selective precipitation agents such as sodium carbonate and oxalic acid. The separation of metals is possible using a liquid/liquid process (solvent extraction in mixer-settler) and solid–liquid (filtration in filter-press unde

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Publisher

: ., Basel, 2022

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ISBN/ISSN

9783036545745

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NONE

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text

Media Type

computer

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online resource

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Statement of Responsibility

Stopic, Srecko

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Heri

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Digital Object Identifier (DOI)

https://directory.doabooks.org/handle/20.500.12854/91140

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