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发明名称
光学ガラス廃材からの希土類元素の分離方法
摘要
<p>光学ガラス廃材からLaやGdの希土類を効率良く分離することを課題とする。光学ガラス廃材の粉砕物に炭素を添加し非酸化性雰囲気中で還元焙焼して、酸化亜鉛を亜鉛に還元すると共に、亜鉛を選択的に揮発させて除去する。焙焼残渣中に残留する希土類元素を塩酸又は硝酸で溶出後、抽出剤PC−88A(大八化学工業社製商品名)を用いてpH2以下の酸性条件下でGdを有機相に抽出する。水相に残ったLaはPC−88A(大八化学工業社製商品名)を用いてpH3〜4の酸性条件下で有機相に抽出する。</p>
申请公布号
JPWO2013128536(A1)
申请公布日期
2015.07.30
申请号
JP20140501847
申请日期
2012.02.27
申请人
发明人
分类号
C22B59/00;B01D11/04;B09B3/00;C22B3/26;C22B7/00
主分类号
C22B59/00
代理机构
代理人
主权项
地址
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