Claim · draft · confidence 0.9

Generated from the Hyphae knowledge graph. Drafted by claude-sonnet-4-6

Statement: Modern by-product slot coke ovens carbonize coking coal at 900–1,100°C (oven chamber); flue wall temperatures can reach up to 2,000°C. Each coking cycle takes 15–18 hours for blast furnace coke production in modern by-product slot ovens.

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