Separation technology of
zirconium and hafnium is playing an increasingly important role in the competition of new material science and technology in the world. In today's fierce competition in science and technology, it takes not only courage and boldness, but also comprehensive strength to overtake on a curve.
In natural minerals zirconium and hafnium occur together. Hafnium content in zirconium is generally 1%-2%, general industrial zirconium, hafnium from zirconium, and as the nuclear industry used in the nuclear zirconium, hafnium must be separated, the production of nuclear zirconium and hafnium. According to zhu xingfeng, the separation and preparation methods of nuclear zirconium and hafnium in the world are generally divided into two kinds: fire separation and wet separation.
"The mlbk-hcns method in the United States is currently used in the production of two-thirds of the world's zirconium sponge. The technical route adopted by CEZUS in France is to separate HFCL4 and ZRCL4 in the distillation column by taking advantage of the difference of saturated vapor pressure between HFCL4 and ZRCL4 in molten potassium aluminochlorate. By this method, the concentration of 30% to 50% of WHFCL4 and atomic ZRCL4 are finally obtained. This method is characterized by less consumption of chemical reagents, less pollution from 'three wastes', shorter separation process and direct connection with the original metal process. Its shortcomings are equipment and transport system is operating under 350 ℃ to 500 ℃, the material requirements of the equipment are high, purification in removing impurity is poor, large investment, only suitable for large-scale smelter using."Zhu xingfeng said, our country needs nuclear industry application materials, such as nuclear grade zirconium sponge, because of zirconium, hafnium separation technology constraints and other factors, so that zirconium, hafnium and other materials and products mainly rely on imports.
"At present, China's nuclear military and nuclear power industries, in the new historical period, have once again put forward the slogan of becoming bigger and stronger and creating world-class status. The separation of zirconium and hafnium to form the production scale and realize the industrialization of zirconium and hafnium can not only end the long-term dependence on expensive imports, but also provide a guarantee for the development of nuclear military industry and nuclear power industry. Zhu xingfeng said, in a sense, the separation of zirconium and hafnium technology and scientific research is an indispensable scientific and technological breakthrough and innovation to help the national nuclear industry development.
In the much-anticipated, Shanghai hafeng new materials research co., LTD., scientific research personnel, under the leadership of zhu xingfeng, after a hard work, finally conquered this bastion of science and technology. Since 2011, in the zirconium, hafnium oxide separation technology assiduously sought, hard work, finally invented "zirconia/hafnium oxide mixture of fire separation method".
