वास्तव में क्या चल रहा है
Indonesia forbade the export of unprocessed nickel ore, forcing anyone who wanted the metal to build a plant on Indonesian soil. Within a decade the country went from an ore supplier to the dominant producer of processed nickel, and the upper limonite layer that used to be waste became battery feedstock.
- सामग्री
- Nickel
- प्रकार
- Limonite laterite, roughly 1.3% nickel, with recoverable cobalt
- यह कहाँ से शुरू होती है
- Indonesia — Sulawesi and Halmahera
चरण दर चरण, और सीमा दर सीमा
Indonesia · Sulawesi द्वारा धारित Indonesian miners and joint ventures (खनिक)
Skimming the top of the profile
The limonite layer sits above the saprolite. It used to be stripped off and dumped to reach the higher-grade ore below; now it is the product.
यहाँ क्यों: Same weathering process as New Caledonia, different layer of the same profile.
Indonesia · HPAL plant, Morowali or Obi द्वारा धारित Plant operators (रासायनिक)
Dissolving it under pressure
Slurried ore goes into an autoclave with sulfuric acid at about 250 °C and 40 bar. Nickel and cobalt dissolve; iron stays behind as a residue.
शेष का क्या हुआ: The acid is made on site from sulfur, most of it imported. A nickel plant is quietly also a very large chemical plant.
यहाँ क्यों: Because the ore export ban means it has to be. This industry exists in Indonesia by policy as much as by geology.
Indonesia · Same complex द्वारा धारित Plant operators (रासायनिक)
Precipitating a shippable intermediate
Nickel and cobalt are precipitated together as mixed hydroxide precipitate — MHP — a green-grey filter cake that is compact enough to ship economically.
यहाँ क्यों: MHP exists purely to solve a freight problem: you cannot ship a tank of pregnant leach solution across an ocean.
China · Chinese refineries द्वारा धारित Refiners (शोधनकर्ता)
To a refinery
MHP is containerised and shipped to be redissolved and separated into individual metal salts.
यहाँ क्यों: Sulfate refining and cathode precursor manufacture are co-located; the intermediate goes to where both already exist.
China · Precursor and cathode plants द्वारा धारित Chemical and cathode makers (निर्माता)
Sulfate, precursor, cathode
Redissolved and crystallised into nickel sulfate and cobalt sulfate, co-precipitated with manganese into a mixed hydroxide precursor, then lithiated and calcined into cathode powder.
यहाँ क्यों: Precursor chemistry is the least visible and most concentrated step in the entire battery chain.
China · Cell and vehicle plants द्वारा धारित Battery and vehicle manufacturers (निर्माता)
Roughly 220 electric cars
At around 50 kg of nickel per high-nickel pack, 11 tonnes of contained nickel is on the order of two hundred cars.
यहाँ क्यों: From a hillside in Sulawesi to a car park, in about five months.
यह एक कार्यसाधित उदाहरण है। यह एक घोषित आरंभिक मात्रा को प्रकाशित सामान्य उपज और पुनःप्राप्ति दरों के माध्यम से अनुसरण करता है, इसलिए अनुपात जाँचे जा सकते हैं; यह किसी विशिष्ट शिपमेंट का अभिलेख नहीं है। मार्ग संबंधी तथ्य — कौन-से देश, कौन-सी प्रक्रियाएँ, और क्यों सामग्री को कहीं और संभाला नहीं जा सकता — सार्वजनिक रिपोर्टिंग से संकलित हैं।