(北京科技大學(xué) 冶金與生態(tài)工程學(xué)院， 北京 100083)
摘 要: 采用非接觸式熔融還原法，以氧化鎂部分穩(wěn)定的氧化鋯管作為氧離子滲透膜，將陰極與陽極分隔開，分批向陰極一側(cè)(熔渣)加入氧化亞鎳，在陽極(碳飽和鐵水)補充碳還原劑，進行連續(xù)制備無碳金屬鎳的實驗研究。結(jié)果表明：金屬鎳沉積在液態(tài)陰極上面，以金屬單質(zhì)形式存在，可以通過機械或熔分方法來分離；升高反應(yīng)溫度和增大金屬氧化物加入量有利于還原反應(yīng)的進行，按加入1 gNiO外電路電流降至100 mA通過電量計算，反應(yīng)溫度從1 743 K升高到1 773 K，加入1 g和2 g NiO還原時間分別縮短54 min和18 min，而兩個溫度下NiO加入量增加后，還原時間縮短近一半。
關(guān)鍵字: 鎳；氧化亞鎳；非接觸式熔融還原；氧離子滲透膜
（School of Metallurgical and Ecological Engineering,
University of Science and Technology Beijing, Beijing 100083, China）
Abstract:A non-contacting carbothermic smelting reduction method was used to investigate reduction of nickel oxide to nickel by adding nickel oxide into cathode and carbon into anode respectively under changing conditions of reaction temperature and quantity added. The results show that pure nickel is obtained on a melt of silver as the cathode, which can be separated with silver by a machinery method or re-melting method, and the deposited rate of the pure nickel increase with increases of the reaction temperature and the quantity added to the cathode，in which it can be obtained according to calculate the accumulated electric quantity of ex-circuit for reduction of 1 g NiO until the current lowered down to 100 mA that the reduction time of 1 g NiO and 2 g NiO decreased 54 min and 18 min respectively from 1 743 K to 1 773 K, and decreased about half after added 2 g comparing with 1 g at same temperature.
Key words: nickel; nickel oxide; no-contacting smelting reduction; oxygen ion-permeable membrane
