Hydrometallurgical treatment of disseminated gold in pyrite and arsenopyrite
DOI:
https://doi.org/10.15381/iigeo.v12i23.2760Keywords:
Hidrometallurgy of gold, pyrite, arsenopyriteAbstract
The ore is complex and presents abundant content of sulphurs: pyrite, arsenopyrite and pyrrhotite, also in few proportion: chalcopyrite, sphalerite and probably sulfhosals that add: copper, silver, arsenic and antimony. Free gold is not appreciated in the obtained results, the major content of gold is in tails of flotation Cu-Ag, constituted by sulphurs of iron, as a non metallic residue prevails the quartz, coal and the insolubles, it is quite strong and naturally very acid, pH:5.3. It is possible to obtain a concentrate of flotation Cu-Ag, with As and Sb like pollutants and around 80% of the total gold stays in tails, to which we effect a direct cyanidation having variant like pH and granulometry, it has not been possible to leach more than 11 % of the gold contained in tails that gives 3.2 grams Au/TM, considering the current prices it has an approximate value 100 US $ Ton.
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Copyright (c) 2009 Angel Azañero Ortiz, Pablo Antonio Núñez Jara, Vidal Aramburú Rojas, Elard León Delgado, Sosimo Fernández Salinas, Luis Orihuela Salazar, Jackeline Palomino Reyna, Antonio Romero Manzanares
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