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← HistoryWithin ancient Chinese blast furnaces, which outcome increases when coke supply is exhausted during cast iron production?
A)Decreased carbon absorption efficiency.✓
B)Formation of more graphite flakes.
C)Accelerated silicon reduction kinetics.
D)Consistent melt temperature control.
💡 Explanation
Increased oxygen presence inhibits carbon diffusion into the iron because decarburization occurs on the melt's surface, a phenomenon linked to inadequate coke supply called Iron 'oxidation'. Therefore insufficient carbon absorption hinders cast iron formation, rather than increasing graphitization, silicon reduction, or maintaining melt temperatures.
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