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Chapter 117 - 21: He Wants
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Chapter 119 - 23: Papermaking and Printing
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... ue use had not yet been realized.
Iron refining technology relied on bloomery methods.
The furnaces were very low.
Wood and charcoal were placed inside the furnace and lit, with iron ore on top of the charcoal for smelting, dissolving the impurities in the ore, and after all the slag flowed out, what remained was honeycomb-like sponge iron.
To remove the sponge iron, the furnace shell had to be broken open—it was almost like disposable chopsticks, used once then t ...
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