PT Freeport Indonesia (PT-FI) commenced mining operations in 1972 and in 1988 discovered the Grasberg mine. Today, after significant production, the Grasberg mining district contains one of the worlds largest recoverable copper reserve and the largest gold reserve.
The Grasberg minerals district has three operating mines, the Grasberg open pit, the Deep Ore Zone (DOZ) underground mine and the Big Gossan underground mine. In September 2015, PT-FI initiated pre-commercial production, which represents ore extracted during the development phase for the purpose of obtaining access to the ore body, at the Deep Mill Level Zone (DMLZ) underground mine. PT-FI also has several projects in progress in the Grasberg minerals district related to the development of the large-scale, long-lived, high-grade underground ore bodies located beneath and nearby the Grasberg open pit. In aggregate, these underground ore bodies are expected to produce large-scale quantities of copper and gold following the transition from the Grasberg open pit operations where PT-FI is currently mining the final phase.
Grasberg open pit. PT-FI began open-pit mining of the Grasberg ore body in 1990 and is currently mining the final phase of the Grasberg open pit, which contains high copper and gold ore grades. PT-FI expects to mine high-grade ore over the next several quarters prior to transitioning to the Grasberg Block Cave underground mine in the first half of 2019. Production from the ore stockpiles, which are located outside of the pit limits, is expected to continue through the end of 2019.
DOZ underground mine.The DOZ ore body lies vertically below the now depleted Intermediate Ore Zone. PT-FI began production from the DOZ ore body in 1989 using open-stope mining methods, but suspended production in 1991 in favor of production from the Grasberg open pit. Production resumed in September 2000 using the block-cave method and is at the 3,110-meter elevation level.
The DOZ is a mature block-cave mine that previously operated at 80,000 metric tons of ore per day. Current operating rates from the DOZ underground mine are driven by the value of the incremental DOZ ore grade compared to the ore from the Grasberg open pit and ore grade material from the development of the DMLZ and Grasberg Block Cave underground mines. Ore milled from the DOZ underground mine averaged 33,800 metric tons of ore per day in 2018, and production at the DOZ underground mine is expected to continue through 2022.
DMLZ underground mine.The DMLZ ore body lies below the DOZ underground mine at the 2,590-meter elevation and represents the downward continuation of mineralization in the Ertsberg East Skarn system and neighboring Ertsberg porphyry. During third-quarter 2018, PT-FI commenced hydraulic fracturing activities to manage rock stresses and pre-condition the DMLZ underground mine for large-scale production following mining induced seismic activity experienced in 2017 and 2018. Results to date have been effective in managing rock stresses and pre-conditioning the cave. PT-FI expects to commence the ramp-up of production in the DMLZ underground mine by mid-2019 and to reach full production rates of 80,000 metric tons per day in 2022. Estimates of timing of future production continue to be reviewed and may be modified as additional information becomes available. Production at the DMLZ underground mine is expected to continue through 2041.
To mitigate the impact of these events, PT-FI implemented a revised mine sequence; upgraded support systems, blasting and reentry protocols; and improved mine monitoring and analysis processes. Development activities and mining are taking place in unaffected areas while impacted areas are being assessed, rehabilitated and prepared to be placed back into use. Targeted production rates once the DMLZ underground mine reaches full capacity are expected to approximate 80,000 metric tons of ore per day in 2021. Production at the DMLZ underground mine is expected to continue through 2041.
Big Gossan underground mine. The Big Gossan underground mine was on care-and-maintenance status during most of 2017 and production restarted in fourth-quarter 2017. The Big Gossan mine lies underground and adjacent to the current mill site. It is a tabular, near vertical ore body. The mine utilizes a blasthole stoping method with delayed paste backfill. Stopes of varying sizes are mined and the ore dropped down passes to a truck haulage level. Trucks are chute loaded and transport the ore to a jaw crusher. The crushed ore is then hoisted vertically via a two-skip production shaft to a level where it is loaded onto a conveyor belt. The belt carries the ore to one of the main underground conveyors where the ore is transferred and conveyed to the surface stockpiles for processing.
Our Indonesia ore bodies are located within and around two main igneous intrusions, the Grasberg monzodiorite and the Ertsberg diorite. The host rocks of these ore bodies include both carbonate and clastic rocks that form the ridge crests and upper flanks of the Sudirman Range, and the igneous rocks of monzonitic to dioritic composition that intrude them. The igneous-hosted ore bodies (the Grasberg open pit and block cave, and portions of the DOZ block cave) occur as vein stockworks and disseminations of copper sulfides, dominated by chalcopyrite and, to a lesser extent, bornite. The sedimentary-rock hosted ore bodies (portions of the DOZ and all of the Big Gossan) occur as magnetite-rich, calcium/magnesian skarn replacements, whose location and orientation are strongly influenced by major faults and by the chemistry of the carbonate rocks along the margins of the intrusions.
The copper mineralization in these skarn deposits is dominated by chalcopyrite, but higher bornite concentrations are common. Moreover, gold occurs in significant concentrations in all of the districts ore bodies, though rarely visible to the naked eye. These gold concentrations usually occur as inclusions within the copper sulfide minerals, though, in some deposits, these concentrations can also be strongly associated with pyrite.
Through its subsidiary, PT-FI, FCX mines one of the worlds largest copper and gold deposits in the Grasberg minerals district in Papua, Indonesia. In addition to copper and gold, PT-FI produces silver. FCX has a 48.76 percent interest in PT-FI and manages its mining operations. PT-FIs results are consolidated in FCXs financial statements.
During fourth-quarter 2019, PT-FI completed mining the final phase of the Grasberg open pit and continues to achieve important milestones in ramping-up production of large-scale quantities of copper and gold from its significant underground ore bodies. Results to date from its underground mines are positive and in line with long-term plans to reach full production rates. In aggregate from 1990 through 2019, the Grasberg minerals district produced 33 billion pounds of copper and 53 million ounces of gold, including over 27 billion pounds of copper and 46 million ounces of gold from the Grasberg open pit.
Applied materials: pebble, calcite, granite, quartz, concrete, dolomite, bluestone, iron ore, limestone, coal gangue, construction waste, ferrosilicon, basalt, sandstone, rocks, ore, glass, cement clinker and some metal.
Jaw crusher, invented by Whitney Blake in 1858, is a primary stone crushing machine for reducing minerals or stones into smaller sizes. It is a must-have machine in wide range of fields like mining, quarrying, and construction industries.
The movable jaw moving from side to side is hung on the mandrel. When the eccentric shaft is turning, its connecting rod moves up and down, which also drives the two toggle plates to do the same movement. Then the moveable jaw moves from side to side to realize crushing and unloading.
Although the movable jaw bears great broken counter-force and the eccentric shaft and the connecting rod bears little stress, industrial enterprises usually make large and middle size machine to crush hard materials. Additionally, the moving track of the movable jaw is an arc with the mandrel as its center.
The circular arc radius equals the distance from the point to the axis with the upper arc being smaller and the lower arc bigger. The crushing efficiency of the jaw crusher is quite high and the crushing ratio is 3-6.
We all know that jaw plate is the most easily worn parts among various of parts installed in jaw crusher. Therefore, in order to use the machine efficiently, the jaw plate should be checked and replaced regularly.
In June 2020, a customer from the Indonesia bought a jaw crusher(spesifikasi jaw crusher) produced by Fote Company to process limestone. According his production and final product demand, we recommand him this jaw stone crusher with capacity of 800t/h.
Powerful Manufacturer: Fote Heavy Machinery Co., Ltd. is a high-tech enterprise integrating R&D, production, sales and service. The hot jaw crushers manufactured by Fote Company can be further dividedinto four types:Blake jaw crusher, Dodge jaw crusher, PE universal jaw crusher and mobile jaw crusher.
Glorious History: In the past 37 years, the company has been committed to crushing equipment, beneficiation equipment, building materials equipment and industrial grinding equipment, providing high-grade sand and gravel solutions and high-end complete sets of equipment for large-scale projects such as highways, railways and hydropower.
Customers' satisfaction: The development of Fote always catches up with the development trend of the market, as a result, the quality of the crusher produced by Fote is guaranteed, and we always gain good feedback from the market.
High-quality Machine: This is mainly due to the crusher's characteristics of high reduction ratio, high productivity, simple structure and reliable performance. And maintenance is convenient and practical.
As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.
Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.
Here is my list of the Top 15 largest and biggest mines in the world: They are economically big and physically large,taking a lot of time and power to excavate. But in their core theres what big mining companies are looking for: the precious ore. Join us as we explore the world of the largest man made canyons yet.
After suffering a major landslide, this open-pit copper mine located in the United States, has recovered thanks to the help of innovative technology like ball mills. Owned by Rio Tinto Group, theKennecott copper mine, as the deposit is also known, is locatedsouthwest ofSalt Lake City, inUtah, andcovers 1,900 acres.
Located in Siberia, Russia, the Mirny mineis a formeropen pitdiamonddeposit, now inactive.The mine is 1,722ft deep and has a diameter of 3,900ft, beingthe second largest excavated hole in the world.The airspace above the mine had to be closed because helicopters were sucked in by the air flow.
This is the largestgold mineand the third largestcopper mineon the planet. Grasber mine is located in the province ofPapua,inIndonesia,nearPuncak Jaya,the highest mountain in the area. The pit ore had 19,500 employees not all operation the Jaw Crusher, obviously.
Chuquicamata,locally known asChuqui, isthe biggestopen pitcopperminein the world by excavated volume. The pit islocated in the north ofChile. The mine is owned and operated byCodelco, the Chilean state enterprise.
This combinedopen pitandundergroundmining project is located inKhanbogd(Mongolia),within the Gobi Desert. The site was discovered in 2001 and joins institutions likeTurquoise Hill Resources,Rio Tintoand theGovernment of Mongolia. The mine began producing copper this year.Oyu Tolgoi is the largest financial mining projectin Mongolias history.
The Goldstrike mine isanactive gold mine located in NortheasternNevada. It has 1,379 employees and is managed by the giant of the mining industry Barrick Goldstrike Mines.This deposit is divided into three different mines: the largeopen-pit mineBetze-Post and the twounderground minesMeikle and Rodeo. The mine uses some very largegold mining equipmentwhich small miners cant operate.
Located in Northern Pery, the Yanacochamine isconsidered the second largest gold mine in the world. The open pit has 251-square kilometer. The mine isrun by theNewmont Mining Corporation, the worlds second largest gold mining company. Newmont is the major shareholder together with Buenaventura, a Peruvian company.
TheKiruna mine, located in Lapland,is the largest and most modern undergroundiron oremine in the world, managed bythe Swedish mining companyLuossavaara-Kiirunavaara AB. The Kiruna mine, with its underground jaw crusher, has an ore body 2.5miles long, 260ft to 390ft thick and reaching a depth of up to 1.2miles.
TheCarajs mineis the largestiron oremineon the planet. The open-pit mine is located in the state ofPara,in the Carajs Mountains, in the region ofNorthernBrazil. Besidesiron, the mine also producesgold,manganese,copperandnickel.The mine is owned by theCompanhia Vale do Rio Doce and is largely powered by hydroelectric power from theTucurua Dam.
Orapa means the resting place of lions and is the name of theworlds largestdiamondmine, located inBotswana,about 150miles west of the city ofFrancistown. The pit is owned byDebswana, apartnershipbetween theDe Beerscompany and the local government.
Also known asKalgoorlie-Bouldergold mine, the pit is located in theGoldfields-Esperanceregion ofWestern Australia. The town around the mine was founded in 1893 during the Yilgarn-Goldfields gold rush. The Kalgoorlie mine is also called the super pit.
TheDiavik minehas been producing diamonds for 10 years. Located in theNorthwest Territories ofCanada, it has become an important part of the regional economy.The open-pit mine is owned by theDominion Diamond Corporationand Diavik Diamond Mines Inc., a subsidiary ofRio Tinto Group.
TheUdachnaya mine the name means lucky pipe is one of the largestdiamondmines inRussiaand in the world.The mine is located in theSakha Republic andhas estimated reserves of 225.8 millioncaratsofdiamonds, withan annual production capacity of 10.4 million carats.
Highland Valley Copper mine is one of the worlds largestopen-pit deposits,owned byTeck Resources. The deposit, located in south central British Columbia (Canada),is rich in copper and molybdenum mineral concentrates, also including trace amounts of silver and gold.
Aimix jaw crusher has capacity of 1-1100 t/h, the maximum feeding size is 125-1200 mm. We also support customized services. It can be used for crushing various types of raw materials, includes: Granite, marble, basalt, limestone, quartz, river pebbles, iron ore, copper ore, etc. Our jaw crusher is widely used for medium-sized crushing of ore and bulk materials in mining, metallurgy, construction, road, railway, water and chemical industries. We also manufactures mobile portable jaw crusher, you can click here to view our mobile crusher plant.
Small PEX Jaw Crusher For Sale Capacity: 13-105 t/h Max. Feeding Size: 210-250 mm Compressive strength: Less than 320 MPa Processed Materials: Granite, marble, basalt, limestone, quartz, river pebbles, iron ore, copper ore, etc. Application: For medium-sized and fine crushing of ore and bulk materials in mining, metallurgy, construction, road, railway, water and chemical industries. Get A Free Quote Get interested in our crusher? Need any customized size & design? Please click Contact Us.
1. PEX jaw crusher is usually arranged after the coarse-broken, which is used for coarse crushing. 2. PEX Jaw crusher can crushing materials to smaller size than PE jaw crusher, which will provide suitable size to the feed of next production process. 3. The size of PE jaw crusher feeding opening is larger and the energy consumption is higher , while the pex jaw crusher is mainly a small jaw crusher. The feeding opening port is smaller and consumes less power.
PE Jaw Crusher For Sale Capacity: 110-1100 t/h, Customized Max. Feeding Size: 125-1200 mm Compressive strength: Less than 320 MPa Processed Materials: Granite, marble, basalt, limestone, quartz, river pebbles, iron ore, copper ore, etc. Application: Widely used for medium-sized crushing of ore and bulk materials in mining, metallurgy, construction, road, railway, water and chemical industries. Get A Free Quote Get interested in our crusher? Need any customized size & design? Please click Contact Us.
1. Large crushing ratio and uniform product size. 2. Large adjustment range, which increases the flexibility of the equipment and can meet the needs of different customers; 3. Safe and reliable lubrication system, convenient for parts replacement, and easy maintenance; 4. Simple structure & reliable performance, low operating cost; 5. Low noise and less dust. 6. Used for primary crushing or secondary crushing. 7. Combined with cone crusher, impact crusher, sand making machine, etc, to form a complete set of sand and gravel production line.
6CX Series European Type Jaw Crusher Capacity: 50-600 t/h Eixed Jaw Length: 1100-2500 mm Motor Power: 75-250 Kw Processed Materials: Granite, marble, basalt, limestone, quartz, river pebbles, iron ore, copper ore, etc. Application: Widely used for medium-sized crushing of ore and bulk materials in mining, metallurgy, construction, road, railway, water and chemical industries. Get A Free Quote
Replacing the original rigid foot connection with elastic limit block and rubber damping device which effectively absorbs peak load of vibration, so as to reduce the impact force between crusher and foundation & prolong the equipment service life.
Integrative motor cabinet reduces mounting space & makes the power output more stable. Oversized tapered roller bearing with uniform internal and external bearing models reduces the number of spare parts.
Aimix stone crusher machine has exported to over 50 countries, includes: Philippines, Malaysia, Indonesia, Pakistan, Sri Lanka, Kenya, Negeria, etc. Here are some example cases of Aimix crusher machine, if you want to get more details please contact us. Aimix Stone Crushing Plant in Uzbekistan Aimix stone crushing plant was transported to Uzbekistan two months ago. Now it has put into aggregate production. Our Uzbekistan ...Read More Aimix 250t/h Crusher Plant in Sri Lanka Aimix 250 t/h Crusher Plant was sent to Sri Lanka. The configuration of crushing plant is mainly according to material ...Read More Aimix 50 t/h Crusher Plant Shipped to Thailand Aimix 50 t/h mobile crusher plant was shipped to Thailand in 2019. This crushing plant consist of batching machine, jaw ...Read More Aimix 200t/h Stationary Crusher Plant Was Delivered To Sri Lanka Aimix 200t/h stationary crusher plant was delivered to Sri Lanka in July, 2018. because of the reasonable matching of different ...Read More Aimix Mobile Crushing Plant Was Sold In Philippines One of our Philippines customer bought the mobile crushing plant of 150tph for Granite stone processing. We designed two sets ...Read More Aimix 100 t/h Aggregate Production Line Was Shipped To Pakistan Aimix 100 t/h aggregate production line was shipped to Pakistan in May, 2017. Our clients spoke highly of the high ...Read More
The eccentric shaft bearing great torque force in working status. So the material of eccentric shaft must have higher strength, toughness and wear resistance. Aimix use high carbon steel material in casting, and heat treatment process to improve its strength, toughness and ware resistance. Besides Eccentric parts must be fine finishing and heat treatment, and the bearing lining is casted by Babbitt alloy.
Jaw crusher bears huge breaking force and friction, which is easy to grinding damaged. To protect the jaw plate, we installs wear-resistant liner on the surface of moving jaw and the stationary jaw. Aimix use high chromium cast iron on High manganese steel plate (Mn13, Mn13Cr2, Mn18Cr2). It shows high wear resistance and toughness, which significantly improved the jaw plate service life.