For quite some time after being discovered, the use of cockroaches has not been shown because it is difficult to produce. With the improvement of the rare earth element separation process, for purifying a compound of scandium now, there is considerable compared to mature process because scandium, yttrium and the lanthanides, the alkali hydroxide is the weakest, so The rare earth element mixed ore containing strontium is precipitated first by treatment after being transferred to the solution and treated with ammonia, so it can be easily separated from the rare earth element by the "staged precipitation" method. Another method is to use the fractional decomposition of nitric acid for separation. Since cerium nitrate is most easily decomposed, the purpose of separating cerium can be achieved.
In addition, uranium, thorium, tungsten, tin and other minerals associated in the comprehensive recovery of scandium scandium is also an important source.
After obtaining pure scandium compound, which was converted to ScCl3, and KCl, LiCl eutectic, with molten zinc electrolysis as the cathode, the scandium will be deposited on the zinc electrode, and the zinc metal can be evaporated scandium.
It is a lightweight silver- white metal that is also very reactive and reacts with hot water to form hydrogen. Therefore, the metal crucible that everyone sees in the **** is sealed in a bottle and protected with argon. Otherwise, it will quickly form a dark **** or gray oxide layer, losing the shiny metallic luster. <
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