(山東理工大學(xué) 化學(xué)工程學(xué)院，淄博 255049)
摘 要: 在800 ℃下的CaCl2-NaCl混合熔鹽中，以燒結(jié)后的ZrO2片體作陰極，高純石墨碳棒作陽極，在工作電壓3.1 V時(shí)，采用直接電脫氧法制備金屬鋯。研究不同燒結(jié)溫度和壓實(shí)壓力對(duì)陰極片體的微觀形貌及其對(duì)電脫氧反應(yīng)過程的影響，并利用XRD譜分析電脫氧產(chǎn)物的相組成。結(jié)果表明：采用直接電脫氧法可以制備金屬鋯；16 MPa、1 000 ℃時(shí)制備的陰極片電脫氧反應(yīng)的平均穩(wěn)定電流最大；產(chǎn)物中既含有鋯的低價(jià)氧化物ZrO2?x，也含有鋯鈣氧化物CaZrO3。
關(guān)鍵字: 二氧化鋯；鋯；直接電脫氧
（School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China）
Abstract: Direct electrodeoxidation was used to prepare metal zirconium in a CaCl2-NaCl melt at 800 ℃ and 3.1 V, using sintered ZrO2 pellets as cathode, and high pure graphite rods as anode. The effects of the sintering temperature and pressure on the micro-morphology of the ZrO2 cathode were investigated. The composition of production of above-mentioned samples was analyzed by XRD. The results show that the metal zirconium can be prepared by this method, and that the electrodeoxidation current of ZrO2 cathode is the biggest under the pressure of 16 MPa and sintering temperature of 1 000 ℃, and also ZrO2?x and CaZrO3 exist in the product.
Key words: zirconium dioxide; zirconium; direct electrodeoxidation
