Abstract:In 2020, a call of “To build a green development model pioneer, the major pollutant emission is 50% better than the national standard”was proposed by Jiangxi Copper Guixi Smelter. The upgrading transformation of natural gas hot-blast stove to replace coal-fired hot-blast stove were completed in material preparation workshop of Guixi Smelter respectively in 2015 and 2016. After nearly 5 years of operation, the concentration of SO₂ decreased significantly compared with coal-fired hot-blast stove, the average concentration of SO₂ in the tail gas is always 50% higher than that in the National Standard (400mg/Nm³) , but the concentration of SO₂ in the tail gas still fluctuates greatly, which is not consistent with the goal of "making a green development model as a pioneer and major pollutants discharge is 50% higher than that in the national standard" . Therefore, the material preparation workshop of Guixi Smelter responded positively, through improving the burner of natural gas hot-blast stove, further optimized the tail gas emission index, strictly controlled the SO₂ concentration within 5 minutes the average value does not exceed 100mg/Nm³.