Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in that it places ore on a liner, then adds the chemicals via drip systems to the ore, whereas in situ mining lacks these liners and pulls pregnant solution up to obtain the minerals. Heap leaching is widely used in modern large-scale mining operations as it produces the desired concentrates at a lower cost compared to conventional processing methods such as flotation, agitation, and vat leaching.
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| - Heap leaching (en)
- Lixiviation en tas (fr)
- Кучное выщелачивание (ru)
- Купчасте вилуговування (uk)
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| - Кучное выщелачивание — процесс получения полезных компонентов (прежде всего металлов) растворением подготовленного (раздробленных забалансовых руд и отвалов бедных руд или хвостов обогатительной фабрики) и уложенного в специальный штабель минерального сырья, с последующим их выделением (осаждением) из циркулирующих растворов. (ru)
- Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in that it places ore on a liner, then adds the chemicals via drip systems to the ore, whereas in situ mining lacks these liners and pulls pregnant solution up to obtain the minerals. Heap leaching is widely used in modern large-scale mining operations as it produces the desired concentrates at a lower cost compared to conventional processing methods such as flotation, agitation, and vat leaching. (en)
- La lixiviation en tas (en anglais heap leaching) est une technique particulière de lixiviation, très ancienne de traitement du minerai reposant sur une série de réactions chimiques visant à absorber spécifiquement la substance économique à extraire depuis la gangue la contenant, puis à la relarguer une fois séparée des autres constituants sans valeurs. Cette technique peu onéreuse est utilisée pour les métaux précieux, le cuivre, le nickel et l'uranium. (fr)
- Купчасте вилуго́вування (рос. кучное выщелачивание, англ. heap leaching; нім. Haufenlaugen n, Haufenlaugung f) — спосіб переробки хімічним чи бактеріальним вилуговуванням попутно видобутих забалансових та бідних балансових крупногрудкуватих руд, добування з яких корисних компонентів звичайними збагачувальними чи гідрометалургійними методами нерентабельне. Купчасте вилуговування — вилуговування перероблюваної руди в її купах — на відміну від вилуговування в чанах — чанове вилуговування. (uk)
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| - Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in that it places ore on a liner, then adds the chemicals via drip systems to the ore, whereas in situ mining lacks these liners and pulls pregnant solution up to obtain the minerals. Heap leaching is widely used in modern large-scale mining operations as it produces the desired concentrates at a lower cost compared to conventional processing methods such as flotation, agitation, and vat leaching. Additionally, dump leaching is an essential part of most copper mining operations and determines the quality grade of the produced material along with other factors Due to the profitability that the dump leaching has on the mining process, i.e. it can contribute substantially to the economic viability of the mining process, it is advantageous to include the results of the leaching operation in the economic overall project evaluation. The process has ancient origins; one of the classical methods for the manufacture of copperas (iron sulfate) was to heap up iron pyrite and collect the leachate from the heap, which was then boiled with iron to produce iron(II) sulfate. (en)
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