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熔融还原炼铁
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iron ore pellets containing carbon
含碳球团
在铁矿粉中配以固体还原剂(煤粉或焦粉等)与适当的黏结剂充分混合后,利用造球机造球或压球机压制而成的含碳球状炉料。可应用于高炉、直接还原等炼铁工艺中。
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national astronomical observatory
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National Bank of Costa Rica
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