The large particle yttrium oxide was prepared using oxalic acid as precipitation agent. The effects of preparation conditions on the particle size of yttrium oxide were discussed.
采用草酸沉淀法研究制备了大颗粒氧化钇，并对各制备条件对氧化钇粒度影响进行了分析讨论。
Pretreatmented solution is subjected to double precipitation first with ammonium bicarbonate and then with oxalic acid to obtain pure RE. Precipitating ratio, PH and amount of …
控制沉淀比、酸度和硫酸铵含量等条件，都可提高稀土纯度，且适合于处理各种料液。
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