The test study of electrochemical wet oxidation desulfurization of iron concentrate
The iron concentrate after magnetic separation and reverse flotation of an iron ore in eastern Hubei was used as raw material,and the electrochemical wet oxidation desulfurization process was adopted.The desulfurization effect was investigated by adjusting the parameters such as catalyst type,electrolyte content,electrolysis voltage,electrolysis temperature and electrolysis time.The results show that the optimum desulfurization reaction conditions in the electrochemical system are as follows:electrolyte HCl mass fraction 2.5%,catalyst MnCl2 content 2.5%,elec-trolysis voltage 3 V,electrolysis temperature 65℃,and reaction time 4 h.Under these conditions,the sulfur content of the high-sulfur iron concentrate is reduced to less than 0.3%,and the chlorine content of the ore powder after washing is extremely low.Meet the standard requirements for smelting high-quality steel;At the same time,the sulfur in the iron concentrate after desulfurization is dissolved in the electrolyte in a soluble state(SO32-and SO42-),and the electrolyte can be recycled.Electrochemical wet desulfurization has a more significant effect than other wet desulfurization methods.
iron concentrateelectrochemical methodwet desulfurizationindirect oxidationsulfur contentelec-trolysiscatalysis
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