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This study discusses the key factors limiting the rate of pulverized coal injection(PCI) in blast furnaces(BF),while the practice and experiences of Baosteel’s BF production with high productivity and low fuel consumption are also analyzed.A methodology based on technological analysis for achieving a reasonable PCI rate is proposed.It is emphasized that high BF productivity should be realized at the maximum bosh gas index based on a higher blast temperature and the excellent quality of raw materials,as well as a high blast volume and melting strength.
This study discusses the key factors limiting the rate of pulverized coal injection (PCI) in blast furnaces (BF), while the practice and experiences of Baosteel’s BF production with high productivity and low fuel consumption are also analyzed. A methodology based on technological analysis for achieving a reasonable PCI rate is proposed. It is emphasized that high BF productivity should be realized at the maximum bosh gas index based on a higher blast temperature and the excellent quality of raw materials, as well as a high blast volume and melting strength.