8.7 ROCK H2, H 0 2 H2 H 2 0 Carbon black H2 OXYGEN co H 2 , H 2 0 , hydrocarbons H 2 0 ~~~~ocarbons THERMAL SLAG H 2 Metal s UNIT OXYGEN IRON UNIT OTHER METALS SILICON FIGURE 8. 2: CHEMICAL PROCESS FLOWCHART
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