Midstream processing
Also called: Mineral processing, Mineral refining · Topic: Secondary Activities: Manufacturing and Industrial Location · NCERT: Beyond NCERT
Meaning
Midstream processing is the middle step in a mineral supply chain. It comes after mining (the upstream step) and before factories make the final goods (the downstream step). At this stage, ores or intermediates are refined into high-purity materials. Intermediates are partly processed material, and high-purity means almost nothing else is mixed in. This is a secondary activity because it adds value to a raw material. It matters because a country that mines ore but cannot refine it still has to send the ore abroad. Refining for the world is done in only a few places, so supply can be cut off, prices can jump and exporting countries can restrict sales.
Example
India has almost no refining capacity for lithium and nickel, so it imports these metals in refined form. In November 2026 the Union Cabinet approved a ₹2,814 crore capex support scheme for FY 2026-27 to 2030-31. It gives a 30% capital subsidy for four plants: two lithium plants of at least 30 kt each and two nickel plants of at least 50 kt each. The refined output is meant for electric vehicles (EVs), battery storage, electronics, defence and speciality steel.
Don't confuse with
- Exploration and mining (upstream): these find ore and dig it out of the ground. Midstream processing starts only after the ore has been mined.
- Recycling: this recovers metals from scrap such as e-waste and old batteries. It is called a secondary source. Midstream processing mostly refines fresh ore, which is the primary source.