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Gold & Copper Mining Project Of Grasberg Open Pit, Indonesia

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Gold & Copper Mining Project Of Grasberg Open Pit, Indonesia

June 16, 2023 nflg 0 Comments

Gold & Copper mining Project Key Data

Location:Tembagapura, Irian Jaya, Indonesia Client:Freeport McMoran Copper & Gold Scope:Gold and copper mining dressing plant solution design, gold and copper crushers and gold and copper grinding mills provision, screening plant installation and after-sale maintenance services Date:2011

Gold & Copper Mining Project Brief Introduction

Indonesia is rich in mineral resources. Copper mines are mainly located in Grassberg, Inter-Mediate ore zone and Big Gossan, containing an estimated 1 400 000 t of copper. The gold resource is estimated to be 1 910 000 t, located at Sumatra, Sulawesi, Kalimantan and Papua.

The Grasberg mine is located about 60 miles north of Timika, at Tembagapura in Irian Java. It is known as the world’s single largest gold reserve and second largest copper reserves, containing a proven reserve of 2.8 billion tones of 1.09, and 0.98% gold.

Indonesia was a leading world supplier of oil and gas, which comprised the main engine of growth. In addition, though, Indonesia supplied 30% of the world’s tin (10.5% of known reserves), 11% of nickel, 6% of copper, and 5% of gold, and was a leading Southeast Asian producer of cement, bauxite, and nitrogen fertilizer. Mining and cement comprised the country’s third-leading industry in 2002, and in 2000, Indonesia also produced hydraulic cement, dolomite, feldspar, granite, gypsum, marble, nitrogen, salt, quartz sand, silica stone, sulfur, and zeolite.

Gold & Copper Mining Project In Indonesia

To support the gold and copper mining, NFLG has planned to do the provision of a complete gold and copper processing plant, including gold and copper crushing machines, gold and copper screening plant, and gold and copper grinding plant and so on. Apart from gold and copper processing equipments, we will offer optimized gold and copper processing solutions which are designed by our experienced engineers of gold and copper mining. A very close communication is taken place between two parties.

Gold mine output was 124,596 kg, up from 86,927 in 1997. Because of political uncertainty and illegal mining, Aurora Gold Ltd., of Australia, the largest gold producer in Indonesia, with annual capacity of 60 tons, decided to sell its 85% share in the Toka Tindung project, North Sulawesi, where it had discovered an indicated and inferred resource of 15.4 million tons of ore averaging 3 grams per ton of gold and 8 grams per ton of silver. Another Aurora prospect, Talawaan, had been heavily contaminated with mercury used by illegal miners. PT Newmont Pacific Nusantara decided to close its Greenfield explorations in Indonesia because of confusion about legal mining regulation and investment policies; it would keep its projects in North Sulawesi and West Nusa Tenggara operating. PT Newmont Minahasa Raya’s Minahasa mine, on the northern tip of North Sulawesi, was forced to close several times in 2000 because of a continuing dispute with ex-landowners and a strike by mining contactors. In addition, the local government attempted to shut down the mine because of a dispute dealing with overburden tax compensation; the matter was settled out of court. Because of depletion of ore resources, Newmont Minahasa planned to cease operations at Minahasa in 2003. The company would not develop the nearby Lobongan gold deposit because of excessive illegal mining. Iriana Resources Corp., of Canada, announced that its Mafi gold exploration (Irian Jaya) had begun in 2000; initial assay samples contained 26.7 grams per ton of gold, 445 grams per ton of silver, and 10.4% lead, with possible occurrences of antimony and zinc in the area. Responding to demands of residents of Java and West Kalimantan, the Ministry of Energy and Mineral Resources (MEMR) ordered illegal gold miners to stop using mercury in their gold-processing activities, which had caused mercury levels in West Kalimantan rivers to be 10 times greater than the maximum allowed.

Copper output (content in ore) was 1 million tons, up from 766,027 in 1999 and 529,121 in 1996. The Indonesian Environmental and Natural Resources Non-Governmental Forum filed a lawsuit against PT Freeport Indonesia Co., the second-largest producer, for environmental mismanagement and misinformation in the Wanagon Basin, next to Freeport’s Grasberg Copper Mine in Irian Jaya. In May 2000, a period of excess rainfall caused a slippage of the mine waste stockpile; four employees were unaccounted for. After the accident, the government imposed a restriction on ore processing; the mine was cleared to return to full capacity in December. After completing its first full year of operation, the Batu Hijau copper and gold mine (Sumbawa Island), with reserves of 4 million tons of copper and 332 tons of gold, was to receive a $1 billion project fund financed through the Japanese, US, and German export banks. Copper production began at Tembagapura, Irian Jaya, in 1974.

800-1000TPH Gold & Copper Crushing line

For your gold and copper dressing plant, we recommend you the 800-1000 TPH crushing plant which is widely used in gold and copper processing. Click the link for more details of complete crushing plants with different capacities.

Compared to the 600 tph – 800 tph plant, the biggest difference is not only it can produce higher capacity but also this plant is especially suitable for those quite tough stones. With three units of jaw crushers and cone crushers, stones will be through coarse crushing and fine crushing. Also, multi-screening equipment are installed in the large plant. If your raw materials are of quite hard and you need larger capacity, you can consider this stone crushing plant.

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