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small scale gold ball mill plant

small scale gold ball mill plant

Ayacucho, Ica and Arequipa. It is typified by narrow, gold bearing quartz veins, which are formed in hypothermal to mesothermal environments. The mineralized structures are found in andesitic volcanic rocks and in the intrusives of the Andean Batholith. Veins found to crosscut granodiorite and diorite, tonalite or andesite often contain higher gold grades in the diorite, tonalite or andesite than i...

Peru Small/Informal Mining Situation

Small mining in Peru is divided by MEM into two categories: traditional and artesanal. Not only is artesanal mining labour intensive with only rudimentary equipment, it is, also in general, an informal activity. Traditional mining makes use of mechanical technologies and is formally registered with the government following norms of labor relations, safety and mining hygiene, environmental requirements, the payment of taxes and reporting to the MEM. According to the statistics of the MEM, the...

Beneficiation Plants

Only 5 plants in the study area use modern process equipment and can be considered to have acceptable reliability. These are shown on Table 2 below: Table 2: Operating Plants

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A local metallurgical laboratory has completed 3 cyanidation tests to determine the optimum dosage of cyanide to recover the gold in ore from the Nazca Ocona gold belt. The composite ore sample used had a head grade of 19 grams per tonne and the ore was leached for 48 hours with intermediate samples taken to determine the rate of gold dissolution. The results of this work are shown on Figure 4 below. It is important to note that PTT intends to use the latest gold processing technology to ensure that all Peruvian regulatory requirements are met or exceeded. None of the technology to be used is experimental and all of the equipment required can be readily manufactured in a number of fabrication shops in Peru. This test work forms the basis for the operating cost estimate and a preliminary flowsheet as discussed below. Based on other plant experience with this material and the preliminary bench scale testing that was done it was determined that a simple cyanidation plant would recover...

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The plant operating cost estimate is developed from the power cost and reagent costs which are the largest cost items. Power requirement is determined by the horsepower requirements of the plant equipment and it is assumed that all power will be from the national power grid at a cost of US$0.10 per kwhr. A backup generator will be available in the event of power outages which are frequent in this part of the country. The plant operating cost estimate is shown on Table 5 below;

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The Peruvian fiscal regime is well understood and has been in place for the past 12 years. The recent election assures another 5 years of political peace and the ruling Aprista party is pro mining and is not considering significant changes to this tax regime. It is emphasized that PTT will follow all Peruvian laws with respect to the paying of all tributes and taxes including payroll taxes and profit sharing and this is reflected in the cash flow model used in this Business Plan.

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The development schedule is shown on Figure 6 below. When the project has been financed there will be a one month design phase to confirm that the flowsheet is appropriate for the project. Fifty kilograms of ore will be obtained from the operations which have signed letters of intent for this purpose. Discussions have already taken place with a local engineering company which has the competency for this project and they have expressed, in writing, their interest in providing a lump sum bid to engineer, purchase and construct the plant. Engineering of the plant will commence as soon as the design of the flowsheet is known in sufficient detail to start sizing the equipment. As previously stated, as much as possible, the plant will be built in modules which can be easily transported to the site and quickly interconnected. Plant engineering and purchasing is anticipated to take only 2 months as many of the contractors already have construction drawings for the equipment to be installed....

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