dc.contributor.advisor |
Hekmat, Asieh; supervisor de grado |
es |
dc.contributor.advisor |
Ruiz Paredes, María Cristina; supervisora de grado |
es |
dc.contributor.author |
Salazar Sanhueza, Brayhan Antonio. |
es |
dc.date.accessioned |
2020-08-05T18:42:48Z |
|
dc.date.available |
2020-08-05T18:42:48Z |
|
dc.date.issued |
2020 |
|
dc.identifier.uri |
http://repositorio.udec.cl/jspui/handle/11594/464 |
|
dc.description |
Bachelor´s Degree Tesis in Application for a Degree in Mining Engineering. |
es |
dc.description.abstract |
It is expected that there will be very few viable approaches for mining mineral deposits in the
future. This is because profit is constantly reduced as higher costs are associated with the required
technologies and techniques to extract minerals from lower grades deposits in challenging
geotechnical conditions. It is also expected to have additional constrains in terms of environment
requirements in the mines of future.
One of the mining techniques that might be useful for such conditions is In-Mine Recovery, IMR.
Although very few studies have been done on this specific subject, it seems that IMR is
environmentally friendly and can well fulfil the economic restrictions for several mining with
challenging conditions. Additionally, by implementing IMR, the required mining developments can be
significantly reduced. Material handling and comminution costs may also noticeably be decreased.
There also would be much less pollution of the ground surface because of processing less materials
on the surface.
Therefore, main objective of this study is to investigate the effective parameters controlling the
rate of leaching in IMR. For example, enhanced fragmentation can significantly improve the metal
recovery of the leaching and improve the profitability of the mining method. Other relevant factors,
such as mineralization, temperature, pH, aeration, leaching solution, time of leaching and height of
the load of material, are also considered in this report to develop a robust and reliable numerical
model(s) to estimate the recovery of the copper deposits for IMR.
A case study of underground copper operation in Chile referred as “Mine A”, with a primary
sulfide ore, a unique environment with unique geological and geo-mechanical conditions is
considered in this research. The results show that the developed model is suitable and accurate
enough for basic studies like, for the pre-feasibility study. It is noted that the prediction approach is
highly dependent on various factors, such as shape factor of the fragmented rock particles as well
as the mineralogical and geological characteristics of rocks. Performing detailed site inspections and
evaluations are needed to properly calibrate the model and to estimate such factors. This can be
achieved through performing small scale leaching tests as well as pilot and bed tests in sites.
According to the sensitivity analyses that was done for the “Mine A” case, temperature is
among the most influential factors affecting the leaching recovery. Pressure and Time are also the
other important parameters that must be considered for implementation of IMR in primary sulfide ores. |
es |
dc.language.iso |
spa |
es |
dc.publisher |
Universidad de Concepción. |
es |
dc.rights |
Creative Commoms CC BY NC ND 4.0 internacional (Atribución-NoComercial-SinDerivadas 4.0 Internacional) |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es |
|
dc.subject |
Hidrogeología |
|
dc.subject |
Mineralogía |
|
dc.subject |
Lixiviación |
|
dc.subject |
Calcopirita |
|
dc.subject |
Sulfuros |
|
dc.title |
Investigating the parameters governing the rate of leaching of primary sulfides copper deposits in in-mine recovery. |
es |
dc.type |
Tesis |
es |
dc.description.facultad |
Departamento de Ingeniería Metalúrgica |
es |
dc.description.departamento |
Departamento de Ingeniería Metalúrgica. |
es |