結晶性沈殿生成のための反応自動制御装置

抄録

The metal ion concentration of the reaction mixture is monitored with an ion selective electrode, whose potential is compared with a reference voltage. A pump supplies the precipitant when the metal ion concentration is higher than a predetermined value, and another pump supplies the metal ion solution when the concentration is lower so as to keep the metal ion. concentration virtually constant throughout the precipitaion reaction. The apparatus is designed for small scale laboratory use. The performance was satisfactory on the tests of malachite and tengerite-type neodymium carbonate hydrate.