Column: Zinc treatment charges jump after 2022 smelter bottleneck
The zinc market was defined by smelter woes last year with global refined metal production dropping by 4.1% relative to 2021, according to the International Lead and Zinc Study Group (ILZSG).
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### Instruction: Column: Zinc treatment charges jump after 2022 smelter bottleneck

### Response: The zinc market was defined by smelter woes last year with global refined metal production dropping by 4.1% relative to 2021, according to the International Lead and Zinc Study Group (ILZSG).