研究了基准条件(不添加Na2SO4和废塑料)、添加4% Na2SO4和添加4%Na2SO4同时废塑料替代25%焦粉直接还原高磷铁矿含碳团块的动力学. 结果表明，不同条件下还原高磷铁矿含碳团块的限制性环节均为气相扩散. 与基准条件相比，高磷铁矿含碳团块中加入4% Na2SO4后，活化能由204.92 kJ/mol降低至158.81 kJ/mol，添加4% Na2SO4同时废塑料替代25%焦粉后，活化能由204.92 kJ/mol降至172.89 kJ/mol.

The reduction kinetics of carbon bearing briquettes of high-phosphorus iron ore under base condition (without adding Na2SO4 and waste plastics), adding 4% Na2SO4 and adding 4% Na2SO4 with waste plastics replacing 25% coke fines were carried out respectively. The results showed that the control process of carbon bearing briquettes under three conditions was gas diffusion. Compared with the base condition, the apparent activation energy of adding 4% Na2SO4 decreased from 204.92 kJ/mol to 158.81 kJ/mol. The addition of 4% Na2SO4 with waste plastics replacing 25% coke fines was also beneficial to the reduction reaction, and the activation energy reduced from 204.92 kJ/mol to 172.89 kJ/mol.