Qué es lo que se mueve realmente
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.
- El material
- Nickel
- La variedad
- Limonite laterite, roughly 1.3% nickel, with recoverable cobalt
- Dónde empieza
- Indonesia — Sulawesi and Halmahera
Paso a paso, y frontera por frontera
Indonesia · Sulawesi en poder de Indonesian miners and joint ventures (Minero)
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.
Por qué aquí: Same weathering process as New Caledonia, different layer of the same profile.
Indonesia · HPAL plant, Morowali or Obi en poder de Plant operators (Químico)
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.
Qué ocurrió con el resto: The acid is made on site from sulfur, most of it imported. A nickel plant is quietly also a very large chemical plant.
Por qué aquí: 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 en poder de Plant operators (Químico)
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.
Por qué aquí: MHP exists purely to solve a freight problem: you cannot ship a tank of pregnant leach solution across an ocean.
China · Chinese refineries en poder de Refiners (Refinador)
To a refinery
MHP is containerised and shipped to be redissolved and separated into individual metal salts.
Por qué aquí: Sulfate refining and cathode precursor manufacture are co-located; the intermediate goes to where both already exist.
China · Precursor and cathode plants en poder de Chemical and cathode makers (Fabricante)
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.
Por qué aquí: Precursor chemistry is the least visible and most concentrated step in the entire battery chain.
China · Cell and vehicle plants en poder de Battery and vehicle manufacturers (Fabricante)
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.
Por qué aquí: From a hillside in Sulawesi to a car park, in about five months.
Este es un ejemplo resuelto. Sigue una cantidad de partida declarada a través de rendimientos y recuperaciones típicos publicados, por lo que las proporciones son verificables; no es el registro de un envío concreto. Los datos de la ruta — qué países, qué procesos y por qué el material no puede simplemente manipularse en otro lugar — se han compilado a partir de información pública.