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High Pressure Grinding Rolls (HPGR)

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 1,000 tph

plicity of the SAB Circuit is gone.

Cerro Verde’s 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 commis-sioned at the end of 2006.

Cerro Verde Concentrator ? Four Years Operating HPGRs

Jan 01, 2012 The Cerro Verde copper-molybdenum porphyry mine, majority owned and operated by Freeport- McMoRan Copper & Gold, is located 30 km southwest of Arequipa Peru. The concentrator, which produces copper and molybdenum concentrates, started operating in late 2006 with a 108,000 tpd design capacity, processing primary sulfide ore (mainly chalcopyrite

CREATIVE AND SIMPLER HPGR CIRCUITS MAY INCREASE

commissioning, the HPGR roller wear life was found to average 5,000 hours with expectations to achieve 6,000 hours with improved profile design (Hart, Parker, Rees, Manesh, & Mcgaffin, 2011). Figure 2 Cerro Verde comminution circuit (Vanderbeek, 2006) Cerro Verde has a design capacity of 108,000 t/d of hard copper-molybdenum ore (average BWi

Perfecting Hard-Rock High Pressure Grinding Performance

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.

Perfecting Hard-Rock High Pressure Grinding E & MJ

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 2,500-kW VSD Twin drives offering an operational speed range of 360–1,200 rpm and a power factor of 0.96.

Predicting HPGR performance and understanding rock

High pressure grinding rolls (HPGR) are becoming an increasingly popular energy efficient solution for comminution of hard rock ores. A significant barrier to the increased adaptation of HPGRs is the current requirement for large amounts of sample for pilot testing. The primary objective of the research was to develop a DEM based computer model for an HPGR to analyze the particle behavior in

Major Mines & Projects Cerro Verde Mine

Cerro Verde’s operation consists of an open-pit copper mine, a 409,500 metric ton-per-day concentrator, and SX/EW leaching facilities. Leach copper production is derived from a 39,000 metric ton-per-day crushed leach facility and a 100,000 metric ton-per-day ROM leach system.

Hpgr Implementation at Cerro Verde Mill (Grinding) Mining

At Cerro Verde HPGR tire wear life is projected conservatively as 6,000 hours is equivalent to SAG mill shell liner lives. Based on this, it was felt that HPGR liner wear does not represent a significant technical risk to the implementation of HPGR technology.

Cerro Verde Concentrator ? Four Years Operating HPGRs

Jan 01, 2012 The Cerro Verde copper-molybdenum porphyry mine, majority owned and operated by Freeport- McMoRan Copper & Gold, is located 30 km southwest of Arequipa Peru. The concentrator, which produces copper and molybdenum concentrates, started operating in late 2006 with a 108,000 tpd design capacity, processing primary sulfide ore (mainly chalcopyrite

PROVING POTENTIAL COST AND POWER SAVINGS WITH

The circuit at Cerro Verde incorporates four HPGR units (2.4 m diameter x 1.6 m wide, 5,000 kW, processing 2,500 t/h), instead of traditional SAG mill circuit. Freeport-McMoRan’s Grasberg mine in Irian Jaya, Indonesia, uses two HPGR units (2.0 m diameter x 1.8 m wide, 3,600 kW, processing 1,450 t/h). In 2010 ABB successfully

Perfecting Hard-Rock High Pressure Grinding Performance

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.

(PDF) HPGR Comminution for Optimization of Copper Leaching

Figure 3 — Mercury porosity measurements on Cerro Verde ore after HPGR crushing. Figure 4 — Comparison of leach kinetics between conventional cone crush and HPGR comminution.

Perfecting Hard-Rock High Pressure Grinding Performance

ABB points out two typical examples of recent HPGR installations with variablespeed 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 2,500-kW VSD Twin drives offering an operational speed range of 360–1,200 rpm and a power factor of 0.96.

Perfecting Hard-Rock High Pressure Grinding E & MJ

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 2,500-kW VSD Twin drives offering an operational speed range of 360–1,200 rpm and a power factor of 0.96.

Predicting HPGR performance and understanding rock

High pressure grinding rolls (HPGR) are becoming an increasingly popular energy efficient solution for comminution of hard rock ores. A significant barrier to the increased adaptation of HPGRs is the current requirement for large amounts of sample for pilot testing. The primary objective of the research was to develop a DEM based computer model for an HPGR to analyze the particle behavior in

Energy Efficiency & Copper Hydrometallurgy

Cerro Verde HPGR Rolls Adjusted product transfer size between unit operations (e.g. primary and secondary grinding) to a standard size Set freight requirements to standard distances and rates . 22 Methodology (continued) Energy consumption for material

Comminution Circuits for Gold Ore Processing ScienceDirect

Jan 01, 2016 Download : Download full-size image; Figure 17.11. Crusher-HPGR-ball mill circuit. Courtesy of Minera Cerro Verde. However, from a process standpoint, HPGRs produce a product with substantially more fines (for a given P80) than a crushing circuit. In this regard, the size distribution of an HPGR circuit is much more similar to the product of an

A preliminary investigation into the feasibility of a

Feb 01, 2011 Examples are SM Cerro Verde (Vanderbeek, 2006), which was started up in 2007, and Boddington (Dunne et al., 2007), commissioned in 2009. Another significant driver is the relative stability in throughput rate and product size achieved by crusher-based circuits.

Validation of methodologies for sizing a high pressure

Currently, there is no standard recognized bench-scale laboratory test for sizing or modelling a high pressure grinding roll (HPGR) in hard rock mining. As a result, metallurgical studies are prohibitively expensive and not economical for early-stage projects. To be adopted as a standard industry test for the HPGR, a bench scale test must: 1) use the same breakage mechanism as an HPGR, 2

Cerro Verde Production Unit Expansion Fluor

The Cerro Verde Production Unit Expansion is considered not only world-class, but is also the largest one-time built copper concentrator on the planet. Fluor, having successfully designed and built the original, 108,000 tpd Cerro Verde C1 (debottlenecked to 120,000 tpd) copper/molybdenum concentrator in 2007, was selected to provide engineering

Hpgr Implementation at Cerro Verde Mill (Grinding) Mining

At Cerro Verde HPGR tire wear life is projected conservatively as 6,000 hours is equivalent to SAG mill shell liner lives. Based on this, it was felt that HPGR liner wear does not represent a significant technical risk to the implementation of HPGR technology.

Cerro Verde Concentrator ? Four Years Operating HPGRs

Jan 01, 2012 The Cerro Verde copper-molybdenum porphyry mine, majority owned and operated by Freeport- McMoRan Copper & Gold, is located 30 km southwest of Arequipa Peru. The concentrator, which produces copper and molybdenum concentrates, started operating in late 2006 with a 108,000 tpd design capacity, processing primary sulfide ore (mainly chalcopyrite

Validation of methodologies for sizing a high pressure

Currently, there is no standard recognized bench-scale laboratory test for sizing or modelling a high pressure grinding roll (HPGR) in hard rock mining. As a result, metallurgical studies are prohibitively expensive and not economical for early-stage projects. To be adopted as a standard industry test for the HPGR, a bench scale test must: 1) use the same breakage mechanism as an HPGR, 2

Perfecting Hard-Rock High Pressure Grinding E & MJ

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 2,500-kW VSD Twin drives offering an operational speed range of 360–1,200 rpm and a power factor of 0.96.

(PDF) HPGR Comminution for Optimization of Copper Leaching

Figure 3 — Mercury porosity measurements on Cerro Verde ore after HPGR crushing. Figure 4 — Comparison of leach kinetics between conventional cone crush and HPGR comminution.

Predicting HPGR performance and understanding rock

High pressure grinding rolls (HPGR) are becoming an increasingly popular energy efficient solution for comminution of hard rock ores. A significant barrier to the increased adaptation of HPGRs is the current requirement for large amounts of sample for pilot testing. The primary objective of the research was to develop a DEM based computer model for an HPGR to analyze the particle behavior in

Energy Efficiency & Copper Hydrometallurgy

Cerro Verde HPGR Rolls Adjusted product transfer size between unit operations (e.g. primary and secondary grinding) to a standard size Set freight requirements to standard distances and rates . 22 Methodology (continued) Energy consumption for material

HIGH PRESSURE GRINDING ROLLS—A PROMISING AND COST

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 ROLLS—A PROMISING

BAUMA PREVIEW COMMINUTION & FRAGMENTATION

Also, “HPGR also offers improved plant ramp-up times compared to SAG-based circuits, as an HPGR can operate at full throughput almost immediately, and has very high mechanical availability” (C. Morley, Fluor Australia in the 2010 SAIMM paper, HPGR—FAQ. In the 2012 CIM paper Cerro Verde concentrator four years operating HPGRs, S.

» El ingreso al cobre de los HPGR

Es así como después de muchos años de aplicación y consolidación en faenas mineras de la industria del cemento, el hierro y los diamantes, en 2006 comenzó una nueva arremetida en la industria del cobre; de hecho, ya Freeport McMoRan, tiene cuatro modelos 24/17 operando en su mina de cobre y oro Cerro Verde en Perú, y dos modelos 20/15 en

Cerro Verde 240,000 T/D Concentrator Expansion Request PDF

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

Cerro verde cone crushers Mediadreams

Cerro verde cone crushers Cerro Verde CopperMolybdenum Mine Peru Snapshot cerro verde cone crushersThe Cerro Verde mine is a porphyry copper deposit that has oxide and secondary sulfide Engineering design for protection system associated with the primary crusher expansion as well as the conveyor belt to feed the. More

HPGR—revolution in platinum? T SAIMM

‘Acceptance of the HPGR in the hard rock sector has been slow and cautious, but has come to maturity in the successful commissioning of the Cerro Verde project’ (Morley C, 2008). High pressure grinding roll (HPGR) technology has been the subject of many technical presentations in the minerals comminution fraternity ever since the

Innovation and Energy Efficiency in Copper Extraction

• 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