阳极导电材料对铁钨锡合金粉电解铁的影响

研究阳极导电材料碳素钢、316L不锈钢、铅钙合金、石墨、钛涂钌板、钛板和铜板在硫酸盐和氯盐体系中对铁钨锡合金粉电解铁的影响。结果表明:电解24 h,上述阳极导电材料在氯盐中的阴极电流效率为90%、90%、66%、66%、54%、49%、33%,在硫酸盐中的阴极电流效率为90%、87%、82%、81%、73%、68%、54%。槽电压均逐渐升高,在氯盐体系中,石墨、铅钙合金、钛涂钌板和钛板作阳极导电材料时,电解液pH逐渐降低;碳素钢、316L不锈钢和铜板作阳极导电材料时,电解液pH逐渐升高。在硫酸盐体系中,铜板和碳素钢作阳极导电材料时,电解液pH基本不变;316L不锈钢作阳极导电材料时,pH逐渐升高;铅钙合金、石墨和钛板作阳极导电材料时,pH先升高后降低。基于槽电压、阴极电流效率,选择适宜的电解体系为硫酸盐体系,该体系中适宜的阳极导电材料为铅钙合金。

Effects of anode conductive materials on electrolytic iron of Fe-W-Sn alloy powder

The effects of anode conductive materials carbon steel,316L stainless steel,Pb-Ca alloy,graphite,Ti-Ru Plate,Ti plate and Cu plate on Fe-W-Sn alloy powder electrolytic Fe in sulfate and chloride salt systems were studied.The results show that the cathode current efficiency of the above anode conductive material in the chloride salt is 90%,90%,66%,66%,54%,49%,33%,respectively,and the cathode current efficiency in the sulfate is 90%,87%,82%,81%,73%,68%,54%,respectively.The cell voltages are gradually increased.In the chloride salt system,when the graphite,Pb-Ca alloy,Ti-Ru plate and Ti plate are used as anode conductive materials,the pH of the electrolyte is gradually reduced.When carbon steel,316L stainless steel and Cur plate are used as anode conductive materials,the electrolyte pH gradually increases.In the sulfate system,when the Cu plate and the carbon steel are used as the anode conductive material,the pH of the electrolyte is basically unchanged,and the pH gradually increases when the 316L stainless steel is used as the anode conductive material,and the pH is first lower after raising when the Pb-Ca alloy,the graphite and the Ti plate are used as the anode conductive material.Based on the cell voltage and cathode current efficiency,a suitable electrolysis system is selected as a sulfate system,and a suitable anode conductive material in the system is a Pb-Ca alloy.