Technological conditions for purification of hafnium by iodide process

Domestic and International Present Status and Utilization of Hafnium Resource

“…In glass ceramic industry, hafnium oxide, the same as zirconia, can be made to sunscreen in the enamel, hafnium oxide also is the main ingredient in special optical glass, and hafnium in glazed porcelain is easy to form the adhesion of coating. Thus it can be used as glaze of ceramic [11] .…”

“…) Overall reaction: HfO2+C=Hf+CO2 (CO) (11) This method is simple, CO, CO 2 are produced by the anode, with oxide as raw materials, through single-step electrolytic to get low impurity of metal, not only shorten the process, but also reduced the energy consumption and environmental pollution. The problems are that the current efficiency is low, reaction with oxygen in the process of reducing the efficiency of deoxidization is becoming more and more low.…”