Dump leaching

Dump leaching is an industrial process to extract precious metals and copper from ores.^[1]

Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and silver, the dump is irrigated with a dilute cyanide solution that percolates through the ore to dissolve gold and silver. The solution containing gold and silver exits the base of the dump, is collected and precious metals extracted. The resultant barren solution is recharged with additional cyanide and returned to the dump.

This method of leaching is usually suitable for low grade ores because it is very low cost. However, it operates with slow kinetics and may take up about 1 to 2 years to extract 50% of the desired mineral.

References

1. ^ Atak, Önal & Çelik 1998, pp. 439–440.

Bibliography

• Atak, Suna; Önal, Güven; Çelik, Mehmet Sabri (1998), Innovations in Mineral and Coal Processing: Proceedings of the 7th International Mineral Processing Symposium : İstanbul, Turkey, 15–17 September 1998 (Illustrated ed.), Taylor & Francis, ISBN 9789058090133, http://books.google.com/?id=fI8Yo0bX7BwC .

This industry-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Industrial processes Industry stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Charles Edward Boutibonne Clava Look at other dictionaries: Leaching (metallurgy) — Leaching is a widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media. Compared to pyrometallurgical operations, leaching is easier to perform and much less harmful, because no gaseous pollution… …   Wikipedia Leaching — In general, leaching is the extraction of certain materials from a carrier into a liquid (usually, but not always a solvent). Specifically, it may refer to:*Leaching (agriculture) *Leaching (chemical science) *Leaching (metallurgy) **Dump… …   Wikipedia Hydrometallurgy — is part of the field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials. Hydrometallurgy is typically divided into three general areas: *Leaching… …   Wikipedia mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium Gold extraction — or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. [cite web url=http://geology.com/publications/getting gold/gold… …   Wikipedia Copper extraction techniques — This article is about historical production methods. For modern methods, see Flash smelting. The Chino open pit copper mine in New Mexico …   Wikipedia Codelco — Type Government owned Industry Mining Founded (1955) Headquarters …   Wikipedia environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium Uranium mining — The Ranger Uranium Mine in Australia …   Wikipedia Open-pit mining — El Chino, located near Silver City, New Mexico, is an open pit copper mine …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”