Sustainable Mining and Metallurgy

In order to achieve efficient dust removal from copper smelting high-temperature flue gas, this paper analyzed the current research status of dust removal technology in the field of high-temperature flue gas, built a pilot plant for high-temperature electrostatic precipitator based on the operating conditions of copper smelting flue gas, analyzed the morphology, particle size, and other characteristics of copper smelting dust, studied the impact of different flue gas flow rates and voltages on dust removal efficiency, and obtained the optimal setting method for key parameters of electrostatic precipitator. The results show that when the flue gas flow rate of the high-temperature electrostatic precipitator is 0.48m/s, the flue gas particles will not cause serious dust accumulation in the high-temperature electrostatic precipitator, nor will cause a large number of particles to escape, and the dust removal efficiency is the best; The higher the electric field voltage, the lower the dust concentration at the outlet, and the higher the dust removal efficiency. It is necessary to find the voltage value with the lowest energy consumption on the premise of meeting the dust removal efficiency. An engineering application test of high temperature electrostatic precipitator technology was conducted in a copper smelter in Fujian. The test results showed that the dust concentration in the flue gas at the outlet of the high temperature electrostatic precipitator decreased from 2.19g/m³ to 62mg/m³, and the dust removal efficiency was greater than 97.1%.