Abstract: A separation method of zirconium and hafnium is described which includes an extraction process of agitating an undiluted aqueous solution containing zirconium, hafnium, and sulfuric acid with a first stirring solution containing an acidic extractant to produce a first extract solution in which the hafnium is extracted by the acidic extractant; and a recovery process of agitating the first extract solution with a second stirring solution containing a citric acid solution to produce a citric acid solution after extraction in which zirconium is reverse-extracted from the first extract solution to the citric acid solution so as to recover zirconium contained in the first extract solution. The method may reduce the amount of extractant while greatly enhancing the separation effect of zirconium and hafnium, and increase zirconium recovery rate by more than 97% through an additional zirconium recovery process while reducing a hafnium content in zirconium by less than 50 ppm.

Abstract: A separation method of zirconium and hafnium is described which includes an extraction process of agitating an undiluted aqueous solution containing zirconium, hafnium, and sulfuric acid with a first stirring solution containing an acidic extractant to produce a first extract solution in which the hafnium is extracted by the acidic extractant; and a recovery process of agitating the first extract solution with a second stirring solution containing a citric acid solution to produce a citric acid solution after extraction in which zirconium is reverse-extracted from the first extract solution to the citric acid solution so as to recover zirconium contained in the first extract solution. The method may reduce the amount of extractant while greatly enhancing the separation effect of zirconium and hafnium, and increase zirconium recovery rate by more than 97% through an additional zirconium recovery process while reducing a hafnium content in zirconium by less than 50 ppm.

Abstract: A robot binding apparatus for coil packaging includes: a grip unit that grips a band used for packaging a coil; a grip robot that supports the grip unit, rotates the grip unit seizing the band at the periphery of the coil to make the band wound on the coil, and moves the band to a fastening position; a head unit that provides the band to the grip unit and fastens the band at the band fastening position; and a head robot that supports the head unit and moves the head unit to the band fastening position.

Abstract: A head unit for coil packaging is disclosed to transfer and fasten band for fixing a packaging material to a coil. The head unit for coil packaging, including: a band transfer unit that transfers a front end of a band supplied for coil packaging to a position at which a robot for winding the band to a coil can grip the front end of the band, and transfers the front end of the band such that it overlaps with the band as the robot provides the front end of the band wound on the coil; and a band fastening unit that fastens the front end of the band to the band.