heavy duty copper ore dressing slurry pump | slurry pump manufacturer
In 2017, Peru produced 2.39 million metric tons of copper. The ten leading countries in world copper production as of 2017 were Chile, Peru, China, the United States, Australia, the Democratic Republic of the Congo, Zambia, Mexico, Indonesia, and Canada.
Chile, the worlds leading copper producer by far, produced an estimated 5.33 million metric tons of copper in 2017. In second place is Peru, with an estimated copper mine production of 2.39 million metric tons in 2017. The worlds third-largest copper producer from mines is China. In 2017, China produced an estimated 1.86 million metric tons of copper from mines, which is over three times less than Chiles production.
The largest copper mines in the world are located primarily in the largest copper producing nations in the world. As Chile is the worlds largest producer of copper, it is not surprising that three of the worlds ten largest copper mines based on capacity are located there. At the top of the list is the Escondida mine, located in the Atacama Desert in Chiles Antofagasta Region. It had a capacity of some 1.37 million metric tons of copper in 2018, which is nearly twice the capacity of the worlds second-largest copper mine, located in Indonesia.
Libra is experienced slurry pump and slurry pump spare parts manufacturer. Slurry pump material can be done in high chrome, rubber, polyurethane, Ceramic and others to match working conditions.Libra does not represent or is not in any way affiliated with Warman of Weir Minerals Group. All names,numbers, symbols and descriptions are used for reference purpose only and do not imply that any pumps or parts listed is the product of Warman Pump.
grasberg open pit copper mine, tembagapura, irian jaya, indonesia - mining technology | mining news and views updated daily
Grasberg mine has the single largest known gold reserve and the second largest copper reserves in the world. It is located 96km north of Timika, at Tembagapura in Irian Jaya the most easterly of Indonesias provinces on the western half of the island of New Guinea.
Grasberg minerals district includes open-pit and underground mines. It has produced 528 billion ounces of copper and 53 million ounces (Moz) of gold, including more than 432 billion ounces of copper and 46Moz of gold from the Grasberg open pit during 1990 to 2019.
Extraction of ore from the Grasberg Block Cave underground mine commenced in the second quarter of 2019, which is the same ore body mined from the surface in the Grasberg open pit. The mining of the final phase of the Grasberg open pit was completed in Q4 2019 and the mine transitioned from open-pit mining to large-scale underground mining.
Freeport McMoran and Rio Tinto sold a majority interest in Grasberg to Indonesias state-owned aluminium mining company, Indonesia Asahan Aluminium (Inalum). Prior to the $3.85bn transaction, Freeport held a 90.64% stake in the mine operation while Rio Tinto had a 40% participating interest. Under the deal, the government agreed to provide a special licence to Freeport to enable the company to continue the extraction of ore until 2041. To support the mine and its workforce, PT Freeport has built an airport, a port at Amamapare, 119km of access road, a tramway, hospital, housing, schools and other facilities.
The mine stands at the collision of the Indo-Australian and the Pacific tectonic plates. Two distinct phases of intrusion have led to the production of nested coaxial porphyry ore bodies and sulphide-rich skarn at the margins, while sedimentary strata include Eocene clastic carbonate limestone with siltstones and sandstones near the base.
The second intrusive stage, the Main Grasberg Stock (MG), is composed of non-fragmental, porphyritic monzodiorites, forming a quartz-magnetite dilational stockwork with veinlet-controlled copper-gold mineralisation. This is a high-grade resource, with averages of 1.5% copper and 2g/t gold.
The workings comprise an open-pit mine, an underground mine and four concentrators. The open-pit mine, which forms a mile-wide crater at the surface, is a high-volume low-cost operation, producing more than 67 million tonnes of ore and providing more than 75% of the mill feed in 2006.
Designed to be fully mechanised, using 6.2m Caterpillar R1700 load-haul-dump vehicles (LHDs) at the extraction level with a truck haulage level to the gyratory crusher, the Deep Ore Zone (DOZ) block cave mine is one of the largest underground operations in the world.
After 2004, when the DOZ mine averaged 43,600tpd, a second underground crusher and additional ventilation were installed to increase daily capacity to 50,000 tonnes. Ramp-up production has begun at the Deep Mill Level Zone (DMLZ) underground mine, which lies below the DOZ underground mine and to the east of the Grasberg ore body.
Production equipment includes 30m42m buckets, a 170-strong fleet of 70t330t haul trucks, together with 65 dozers and graders, with radar, GPS and robotics used in the mines state-of-the-art slope-monitoring system.
The ore undergoes primary crushing at the mine, before being delivered by ore passes to the mill complex for further crushing, grinding and flotation. Grasbergs milling and concentrating complex is the largest in the world, with four crushers and two giant semi-autogenous grinding (SAG) units processing a daily average of 240,000t of ore.
A flotation reagent is used to separate concentrate from the ore. Slurry containing 60-40 copper concentrate is drawn along three pipelines to the seaport of Amamapare, more than 70 miles away, where it is dewatered. Once filtered and dried, the concentrate containing copper, gold and silver is shipped to smelters around the world.