Uranium: the leach–IX/SX–precipitate family

Uranium is recovered by a leach–concentrate–precipitate flowsheet that composes from mechanisms taught earlier. This page assembles them as a process-description survey, naming each contribution rather than re-teaching it.

The flowsheet in one line

Leach the uranium into solution, concentrate and purify it from a dilute liquor by ion exchange or solvent extraction, and precipitate it as a uranium concentrate: leach–IX/SX–precipitate.

What each stage is doing

The leach can take any of three contacting forms taught earlier — stirred-tank leaching (topic 4.3), heap leaching (topic 4.4) or in-situ recovery, leaching the orebody in place through wells (topic 4.5) — in either an acid (sulfuric) or an alkaline (carbonate) lixiviant, chosen on the gangue. Concentration is ion exchange (topic 6.7) or solvent extraction (topic 6.6): the uranium is loaded from a large, dilute, impure leach liquor onto a resin or into an organic, then stripped into a small, clean, concentrated solution — ion exchange being the classic choice precisely because it pulls a target from a very low tenor where SX’s economics fail. Precipitation is pH control, topic 6.2: the purified solution is precipitated to a solid uranium concentrate that is dried for transport.

The defining numbers

The leach reagent demand lands on the leach reagent consumption calculator below, and the acid-leach lixiviant reads on the sulfuric acid hub. The IX and SX concentration steps are read on their own mechanisms — the load–wash–elute–regenerate cycle and the O/A ratio — rather than a single committed calculation, which is why the page leans on the cross-links into topics 6.6 and 6.7.

Where it differs from the others

Uranium is the family that most often reaches for ion exchange, and the one that can leach the orebody in place rather than mining it — the in-situ route. Its product is a precipitated concentrate, not a metal; its defining engineering problem is recovering a low-tenor value cleanly from a large, dilute flow, which is exactly the duty ion exchange was built for.