MEM aprobó estudio de impacto ambiental de ToromochoLa Dirección General de Asuntos Ambientales Mineros (DGAAM) del Ministerio de En. While Chinalco had paid $ million for Toromocho, it expected to produce .. and Mines had to approve the EIA for an extractive project in Peru before. Gerald Wolfe pointed out that the company, which invested $ million in Toromocho last year, is waiting for the EIA approval to begin the construction phase.
|Published (Last):||20 December 2004|
|PDF File Size:||1.12 Mb|
|ePub File Size:||15.27 Mb|
|Price:||Free* [*Free Regsitration Required]|
The impacts of zinc and arsenic on the process have also been investigated. Then enargite will be minimized in the flotation plant feed by careful ore control.
Toronocho Technical Report is based on drilling completed by late Octobera January block model, and a February mine plan. IMC obtained a copy of that spreadsheet and completed a spot check of the calculations and procedures within the table.
Plenge Laboratories in Lima to determine the leachability of skarn and intrusive ores containing high cyanide soluble copper contents.
Toromocho mine – Wikipedia
Figure presents the results of the check assays for total copper. The concentrate weight increase is attributed to a less effective depression of talc at the CMC dosage tested.
A heap leach facility with SXEW treatment of the heap liquor. The results for all check eix values are sound. The structure of the Toromocho data base necessitates a number of comparisons toromodho data base verification. At Toromocho chalcocite is distributed vertically over at least meters, but some chalcopyrite remains throughout much of this interval.
Consequently, there was additional drill hole information available that was not used in the cross section or wire frame interpretation used for this model. For example, drill hole composites assigned as Hornfels were coded with a 1, and all other toromoco blocks were coded with a 0.
ela MAG of Tucson, Arizona. The total model size and block size is summarized as follows: The use of CMC does not have dia significant adverse affect on copper recovery, however it does result in the depression of molybdenite as previously discussed. The climate has two well defined seasons. Table summarizes the input information used for mill ore.
Reclamation of the low grade mill stockpile to the mill has not occurred on Figure Smelter Deducts – Metal Content. Molybdenum moly and silver are also present as byproduct credits. These reassays do not provide any information or checks on the sample collection and preparation used to prepare the pulps.
IMC personnel have not visited a sample preparation facility that is as clean and well organized as the CIMM facilities. Once a theoretical pit geometry was developed, the material inside that pit was tabulated inclusive of the contained inferred category mineralization. The deposit outcrops and is amenable to conventional open pit mining methods. The mining town of Morococha is roughly 2km from the deposit. Toromocho has been explored by detailed geological mapping, diamond drilling, a small open pit and, underground development.
However the permit process is straight forward with definite steps and time lines. Mineral Resources are based on different cutoff grade criteria than the Mineral Reserves. IMC determined that selective mining of high arsenic could be accomplished and therefore these ores would be removed to allow the production of final copper concentrates of less than smelter penalty grade arsenic. The core handling through sawing is completed by PCI personnel at Tuctu.
Project operating costs are broadly summarized as follows: These openings have provided PCI with access and information to identify the potential continuity of copper mineralization below the limit of the old drill data from the down to the m elevation level underground.
A buffer of m on the northwest side was also left between the national highway and the pit crest. The primary author of this report has been Independent Mining Consultants, Inc. Based on the flowsheet introduced in Figure toromohco.
| Minera Chinalco Perú – Proyecto Toromocho
Waste and stockpile storage is available immediately south and southwest of the Toromocho pit area. CMC allowed good final copper concentrate grades at good copper recoveries. The cutoff grades used for mill ore were established to maximize project return on investment. Intervals for Composites by PCI. In developing the resource cones, IMC applied economic benefit to blocks of the measured and indicated category only.
The copper, iron, arsenic, zinc and insol assays are remarkably similar.