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High Pressure Grinding Rolls (HPGR)High Pressure Grinding Rolls (HPGR) Cerro Verde milling circuit incorporates high pressure grinding rolls (HPGR) instead of SAG mills - 108,000 mtpd - Four 2.4 x 1.6 m HPGR's Advantages vs. SAG mills - Greater total energy efficiency - 2.4 kWh/t vs. 12.0 kWh/t - ~10% reduction in Bond Work Index of product
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Cerro Verde has a design capacity of 108,000 t/d of hard copper-molybdenum ore (average BWi of 15.3 kWh/t). The circuit is comprised of four 746 kW cone crushers, …
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• Cerro Verde milling circuit incorporates high pressure grinding rolls (HPGR) – 108,000 mtpd – Four 2.4 x 1.6 m HPGR's • Advantages vs. SAG mills – Greater total energy efficiency • 2.4 kWh/t vs. 12.0 kWh/t – Greater flexibility – Lower unit cost • Disadvantages vs. SAG mills – Additional capital cost – Maintenance ...
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2 Coppe r operations Candelaria/Ojos del Salado (80%), Cerro Verde (53.6%) and El Abra (51%) Freeport-McMoRan Operations. 7. Copper. Reserves 25.9 billion lbs. ... Cerro Verde HPGR Installation. 16.
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Cerro Verdes four HPGR Polycoms 24/17 Cerro Verde is a copper-molybdenum concentrator. The circuit consists of four (4) HPGRs, rolls 2.4 m diameter x 1.65 m wide, working in closed-circuit with eight (8) 3 x 7.3 m wet screens. Each is powered by 2 x 2500 kW variable speed drive units. They were commissioned at the end of 2006.
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Pterodáctilo – Cerro Verde. La empresa minera Cerro Verde ha desarrollado una herramienta protectora denominada Pterodáctilo, cuyo principal objetivo es proteger la salud del personal operativo de mina ante posibles caídas de mineral fino durante los procesos productivos y los de limpieza del equipamiento y maquinaria. Más información.
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Figure 4: Conventional HPGR (HPGR, BM) – Boddington, Cerro Verde <40 Mtpa. Stephan W. Kirsch / HPGR Technology 6 Figure 5: Multiple pass HPGR's typically configured as (HPGR 2 – BM) for very large concentrators > 40Mtpa. Figure 6: Single HPGR with edge recycle, HPGRe - BM suitable for small concentrators <10 Mtpa Stephan W. …
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Manual de Operaciones Planta Concentradora. Sociedad Minera Cerro Verde. AREA 3200 CHANCADO SECUNDARIO Y TERCIARIO a. Descripción del Proceso. i. Descripción del Proceso. El chancado secundario y terciario son las etapas intermedias del chancado, que reducen el tamaño de partícula del mineral desde un tamaño de descarga de la …
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High Pressure Grinding Rolls (HPGR): - Pioneered the use of the HPGR in hard rock ore applications (incl. gold and diamonds) - Initial Cerro Verde HPGR evaluation and benchmarking studies
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Abstract. The successful commissioning of the Cerro Verde project in Peru at the end of 2006 marked the culmination of the efforts of many in the industry over …
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came into operation in Cerro Verde mine in 2006 and have the longest service life by now. Mogalakwena began using one HPGR Polycom-22/16 in 2008, and four HPGR Polycom-24/17 have been operated in Boddington mine since 2009. UDC 622.732 M. KESSLER, E. BURCHARDT (ThyssenKrupp Resource Technology) HIGH PRESSURE GRINDING …
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High Pressure Grinding Rolls (HPGR): Pioneered the use of the HPGR in hard rock ore applications (incl. gold and diamonds) Initial Cerro Verde HPGR evaluation and benchmarking studies; Mina Justa HPGR circuit for leaching; Energy efficient comminution systems – studies and evaluations; Thiosulfate leaching process for Barrick …
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The Cerro Verde copper-molybdenum mine, majority owned and operated by Freeport-McMoRan (Freeport), is located near Arequipa, Peru. A 108,000 t/d copper concentrator processing primary sulfide ...
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HPGR-FAQ's. The successful commissioning of the Cerro Verde project in Peru at the end of 2006 marked the culmination of the efforts of many in the industry over many years to have high pressure grinding roll technology recognized and accepted as a legitimate alternative to the conventional approach to large-scale hard rock comminution circuit ...
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Energy Efficiency & Copper Hydrometallurgy John O. Marsden August 18, 2008 Presentation Outline Purpose & background Methodology & assumptions Operations & process routes considered Energy consumption by unit operation Energy consumption by process route Energy consumption by source Opportunities for energy …
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• Increased dust Mine Operations Using HPGR • Freeport McMoran, Cerro Verde, Peru – 2.4 m Dia x 1.7 m wide, 5 MW (2x2.5), processing 2,500 tph • Freeport McMoran, Grasberg Mine, Irian Jaya, Indonesia – 2.0 m Dia x 1.8 m wide, 3.6 MW, processing 1,450 tph • Nurkazgan Gold, Kazakhstan – 1.7 m Dia x 1.4 m wide, 2.3 MW, processing ...
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La construcción y puesta en marcha de la nueva concentradora C2 de minera Cerro Verde –inaugurada en mayo último– constituye uno de los proyectos de este tipo más grandes realizados a la fecha. Con un costo de US$4.600 millones, la expansión, que incrementa la capacidad de procesamiento en 240.000 toneladas por día (tpd), es ...
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The HPGR and air classification circuit used 20 - 30 % less energy than the HGPR, screen, ball mill circuit. While VRM was estimated to use 10 - 30 % less energy (depending on the type of VRM ...
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the trade-off between SAG and high pressure grinding rolls (HPGR) circuits when the increase in conveying requirement and change in media wear are considered when comparing comminution circuit options. These two case studies demonstrate the importance of including ancillary equipment power and the embodied energy of the grinding media …
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Dependiendo cién de carga deseada taciones especificas para la nueva de la demanda de potencia de fos La compresién y extensi6n del planta de Cerro Verde. HPGRs, se selecciona un sistema de eje cardén, provocado por el nece- Los convertidores de frecuen- accionamiento de velocidad variable sario movimiento horizontal hacia cla ACS1000 a …
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11 Cerro Verde Crushed Ore Heap Leaching. 12 Chino Concentrator. 13 Candelaria SAG Milling. 14 Cerro Verde HPGR Installation. 15 Cerro Verde HPGR Rolls – 2.4 m Diameter. 16 Miami Smelter. 17 Bagdad Concentrate Leaching. 18 Morenci Concentrate Leaching. 19 Electrowinning & Electrorefining. 20 Methodology (continued)
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NLMK began implementing HPGR technology in each of the plant's four process lines in 2016. The first four grinding rolls supplemented traditional cone crushers and ball mills, and enabled the plant to boost the productivity of the sections by 12.5% and to grow iron ore concentrate output by 1 million mt to 16.6 million mt/y.
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ABB points out two typical examples of recent HPGR installations with variable-speed drive systems—the Cerro Verde copper mine in Peru and Adanac's Ruby Creek molybdenum operation in Canada. The Cerro Verde Polysius HPGRs have 2 x 2500-kW VSD Twin drives offering an operational speed range of 360–1,200 rpm and a power factor of 0.96.
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hpgr-faq's The successful commissioning of the Cerro Verde project in Peru at the end of 2006 marked the culmination of the efforts of many in the industry over many years to …
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The 240,000 tpd Cerro Verde Production Unit Expansion concentrator design is based on conventional copper sulfide flotation unit operations, replicating the C1 process but includes larger process equipment at a separate location on the mine property. The mine is an open-pit copper and molybdenum complex near Arequipa, in southern Peru.
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The HPGR and air classification circuit used 20 - 30 % less energy than the HGPR, screen, ball mill circuit. While VRM was estimated to use 10 - 30 % less energy (depending on the type of VRM ...
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HPGR technology has been previously used in Cerro Verde project, which is one of the first adopters globally of the technology in copper ore processing (Vanderbeek et al 2006). The sulfide ore flow sheet for Mina Justa incorporates the use of HPGR prior to ball milling primarily due to the competency of the sulfide ore.
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A Cerro Verde expansion used a similar flowsheet as the 2006-commissioned circuit to triple circuit capacity. The expansion circuit includes eight MP1250 cone crushers, eight HPGRs (also 2.4 x 1.7-m units, with 5 MW each), and six ball mills (22 MW each), for installed comminution power of …
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Con la finalidad de reducir la cantidad de rechazos en recomendaciones de ajuste de parámetros operativos de presión hidráulica en HPGRs, generados por un Sistema Inteligente para la Optimización …
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2 Copper operations Candelaria/Ojos del Salado (80%), Cerro Verde (53.6%) and El Abra (51%) Freeport-McMoRan Operations 7 Copper Reserves 25.9 billion lbs ... Cerro Verde HPGR Installation. 16
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HPGR as alternative to fused alumina comminution route: an assessment of circuit simplification potential. The successful commissioning of the Cerro Verde project in Peru at the end of 2006 marked ...
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