Amman & Freeport Collaboration is getting smaller
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The cooperation opportunity to build a copper cathode smelter in West Sumbawa, West Nusa Tenggara between PT Amman Mineral Nusa Tenggara and PT Freeport Indonesia is getting smaller.
PT Freeport Indonesia
Previously, the two mining giants in Indonesia would build a joint smelter around the Batu Hijau mining area in West Nusa Tenggara. However, Amman Mineral Nusa Tenggara focuses on the smelter project with a capacity of 1.3 million tons of concentrate per year.
Gold Mine of PT Amman Mineral Nusa Tenggara
Amman Mineral President Director Rachmat Makkasau said that the planned construction of the smelter is still normal. According to him, Amman Mineral has signed a contract for initial engineering and engineering design (front end engineering design / FEED) with Outotec in quarter IV / 2018 to build the copper processing and refining facility.
Based on the initial assessment, Amman Mineral smelter capacity is only 1.3 million tons of copper concentrate per year. This amount is most likely only able to accommodate the copper mineral owned by Amman Mineral.
He was reluctant to disclose further related to the option to work the same as Freeport Indonesia in building the smelter. According to him, the company is still focusing on 1.3 million capacity, tons of concentrate per year.
"Current plans for the FEED are still 1.3 million tons. The point is we focus on 1.3 million tons first, "he said.
Outotec,
Based on official information from Outotec, the design work will last for 9 months and is a continuation of the feasibility study carried out in 2017. The scope of Outotec engineering includes the design of all copper smelters.
This technique will be based on Smelting flash and flash converting technology, including electrolyte refineries, silver concentrates, precious metal refineries, wet gas cleaning, and sulfuric acid plants Lurec, as well as waste treatment plants and related infrastructure.
The global mining and metal technology provider companies have also established subsidiaries in Indonesia, namely PT Outotec Technology Solutions to encourage expansion into the Asia Pacific.
Before Amman Mineral ensured partners in the construction of a smelter, Rachmat had said there was a discussion with Freeport Indonesia regarding the planned construction of a joint smelter. At that time, his party also prepared two options for building a smelter.
The smelter capacity is estimated at 2 million to 2.6 million tons of copper concentrate per year. The smelter is planned to be built in stages. Freeport Indonesia said that it could not provide confirmation regarding the opportunity to cooperate in the construction of the smelter. Clearly, Freeport's main option so far has been to build its own smelter.
ESDM Ministry Director General of Mineral and Coal Bambang Gatot Ariyono said that to date the exact location of the Freeport Indonesia smelter construction has not been decided by the company. Most likely development will be carried out in the Java Integrated Industrial and Port Estate (JIIPE) of Gresik, East Java.
"Later, wait for verification. There could be a new plan, "he said.
Related to mining expansion, Rachmat stated that exploration activities in the Elang Block were going well. The activity has been carried out since 2016.
"The exploration went well. After getting all the results, after that later the road map will be further, "he said.
Reserves in the Elang Block are estimated at 13 billion pounds of copper and 19.5 million ounces of gold. The location is 60 kilometers from the current Amman Mineral main mine, namely Batu Hijau.
The Batu Hijau mine has now entered phase 7, which is the final stage of mining. Based on a report from PT Medco Energi Internasional Tbk., The parent company of Amman Mineral, phase 7 is estimated to be able to extract 4.47 billion pounds of copper reserves and 4.12 million ounces of gold.
IN INDONESIAN
Kolaborasi Amman & Freeport Makin Kecil
Peluang kerja sama pembangunan smelter katoda tembaga di Sumbawa Barat, Nusa Tenggara Barat antara PT Amman Mineral Nusa Tenggara dan PT Freeport Indonesia makin kecil.
Sebelumnya, kedua raksasa pertambangan di Indonesia itu akan membangun smelter bersama di sekitar wilayah pertambangan Batu Hijau di Nusa Tenggara Barat. Namun, Amman Mineral Nusa Tenggara justru fokus dengan proyek smelter berkapasitas 1,3 juta ton konsentrat per tahun.
Presiden Direktur Amman Mineral Rachmat Makkasau mengatakan bahwa rencana pembangunan smelter masih berlangsung normal.
Menurutnya, Amman Mineral telah menandatangani kontrak untuk desain teknik dan rekayasa awal (front end engineering design/ FEED) dengan Outotec pada kuartal IV/2018 untuk membangun fasilitas pengolahan dan pemurnian tembaga tersebut.
Berdasarkan kajian awal itu, kapasitas smelter Amman Mineral hanya 1,3 juta ton konsentrat tembaga per tahun. Jumlah tersebut kemungkinan besar hanya bisa menampung konsentrat tembaga milik Amman Mineral.
Dia pun enggan mengungkapkan lebih lanjut terkait dengan opsi untuk bekerja sama dengan Freeport Indonesia dalam membangun smelter tersebut. Menurutnya, perusahaan masih fokus pada kapasitas 1,3 juta, ton konsentrat per tahun.
“Rencana sekarang sesuai FEED masih 1,3 juta ton. Intinya kita fokus di 1,3 juta ton dulu,” ujarnya.
Berdasarkan keterangan resmi dari Outotec, pekerjaan desain akan berlangsung selama 9 bulan dan merupakan kelanjutan dari studi kelayakan yang telah dilakukan pada 2017. Ruang lingkup rekayasa Outotec meliputi desain seluruh peleburan tembaga.
Teknik ini akan didasarkan pada teknologi flash Smelting dan flash converting, termasuk kilang elektrolit, konsentrat perak, pengilangan logam mulia, pembersihan gas basah dan pabrik asam sulfat Lurec, serta pabrik pengolahan limbah dan infrastruktur terkaitnya.
Perusahaan penyedia teknologi penambangan dan logam global tersebut juga telah mendirikan anak usaha di Indonesia, yakni PT Outotec Technology Solutions untuk mendorong perluasan ke Asia Pasifik.
Sebelum Amman Mineral memastikan rekan dalam pembangunan smelter, Rachmat sempat mengatakan ada diskusi dengan pihak Freeport Indonesia terkait dengan rencana pembangunan smelter bersama. Kala itu, pihaknya pun menyiapkan dua opsi pembangunan smelter.
Kapasitas smelter tersebut diperkirakan sebanyak 2 juta hingga 2,6 juta ton konsentrat tembaga per tahun. Smelter tersebut rencananya bakal dibangun secara bertahap. Pihak Freeport Indonesia menyatakan belum bisa memberikan konfirmasi terkait dengan peluang kerja sama pembangunan smelter tersebut. Yang jelas, opsi utama Freeport sejauh ini memang membangun smelter sendiri.
Direktur Jenderal Mineral dan Batubara Kementerian ESDM Bambang Gatot Ariyono mengatakan bahwa sampai saat ini lokasi pasti pembangunan smelter Freeport Indonesia belum juga diputuskan perseroan. Kemungkinan besar pembangunan akan dilaksanakan di Java Integrated Industrial and Port Estate (JIIPE) Gresik, Jawa Timur.
“Nanti tunggu verifikasi. Bisa saja ada rencana baru,” katanya.
Terkait dengan ekspansi pertambangan, Rachmat menyatakan bahwa kegiatan eksplorasi di Blok Elang berlangsung dengan baik. Kegiatan tersebut sudah dilakukan sejak 2016.
“Eksplorasinya berlangsung bagus. Setelah dapat semua hasilnya, setelah itu nanti peta jalan lebih lanjut,” tuturnya.
Cadangan di Blok Elang diperkirakan mencapai 13 miliar pon tembaga dan 19,5 juta ounce emas. Lokasinya berjarak 60 kilometer dari tambang utama Amman Mineral saat ini, yakni Batu Hijau.
Tambang Batu Hijau kini telah memasuki fase 7, yaitu tahap akhir penambangan. Berdasarkan laporan PT Medco Energi Internasional Tbk., induk usaha Amman Mineral, fase 7 diperkirakan dapat mengekstraksi cadangan tembaga sebanyak 4,47 miliar pon dan emas sebanyak 4,12 juta ounce.
Bisnis Indonesia, Page-24, Thursday, Jan 24, 2019
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