(中南大學(xué) 冶金與環(huán)境學(xué)院，長(zhǎng)沙 410083)
摘 要: 研究陽(yáng)極導(dǎo)電材料碳素鋼、316L不銹鋼、鉛鈣合金、石墨、鈦涂釕板、鈦板和銅板在硫酸鹽和氯鹽體系中對(duì)鐵鎢錫合金粉電解鐵的影響。結(jié)果表明：電解24 h，上述陽(yáng)極導(dǎo)電材料在氯鹽中的陰極電流效率為90%、90%、66%、66%、54%、49%、33%，在硫酸鹽中的陰極電流效率為90%、87%、82%、81%、73%、68%、54%。槽電壓均逐漸升高，在氯鹽體系中，石墨、鉛鈣合金、鈦涂釕板和鈦板作陽(yáng)極導(dǎo)電材料時(shí)，電解液pH逐漸降低；碳素鋼、316L不銹鋼和銅板作陽(yáng)極導(dǎo)電材料時(shí)，電解液pH逐漸升高。在硫酸鹽體系中，銅板和碳素鋼作陽(yáng)極導(dǎo)電材料時(shí)，電解液pH基本不變；316L不銹鋼作陽(yáng)極導(dǎo)電材料時(shí)，pH逐漸升高；鉛鈣合金、石墨和鈦板作陽(yáng)極導(dǎo)電材料時(shí)，pH先升高后降低。基于槽電壓、陰極電流效率，選擇適宜的電解體系為硫酸鹽體系，該體系中適宜的陽(yáng)極導(dǎo)電材料為鉛鈣合金。
關(guān)鍵字: 鐵鎢錫合金粉；陽(yáng)極導(dǎo)電材料；槽電壓；pH；電流效率
（School of Metallurgy and Environment, Central South University, Changsha 410083, China）
Abstract: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.
Key words: Fe-W-Sn alloy; anodic conductive material; cell voltage; pH; current efficiency
