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2. 发明公开

KR1020120055372A 초경합금 스크랩으로부터 텅스텐 및 코발트 회수방법 有权
标题翻译：从硬化金属中回收的钴和钴的回收方法
公开(公告)号：KR1020120055372A
公开(公告)日：2012-05-31
申请号：KR1020100117087
申请日：2010-11-23
申请人： 한국지질자원연구원
发明人： 이재천 , 김지혜 , 김병수 , 김수경 , 조순형
IPC分类号： C22B7/00 , C22B34/36 , C22B23/00
CPC分类号： Y02P10/234 , C22B7/00 , C22B23/00 , C22B34/36
摘要： PURPOSE: A method for recovering tungsten and cobalt from cemented tungsten carbide scraps is provided to effectively recover tungsten and cobalt by oxidizing cemented tungsten carbide scrap through calcination and dissolving tungsten using NaOH(Sodium Hydroxide). CONSTITUTION: A method for recovering tungsten and cobalt from cemented tungsten carbide scraps is as follows. Cemented tungsten carbide sludge is calcined and converted into oxides(S200). The oxidized cemented carbide scrap oxide is dissolved using NaOH solution in a dissolving reactor(S400). Undissolved residues are filtered from the dissolving reactor(S500). Acid is added to the dissolving reactor so that tungstic acid is precipitated and filtered through a filtering apparatus(S510). The undissolved residues are put into a leaching reactor so that cobalt is extracted with acid and alkaline solution is put into the leaching reactor again so that cobalt is recovered as hydroxide(S520).
摘要翻译：目的：提供一种从硬质合金碳化钨废料中回收钨和钴的方法，通过使用氢氧化钠（氢氧化钠）煅烧和溶解钨来氧化固结碳化钨废料，有效回收钨和钴。构成：从固结碳化钨废料中回收钨和钴的方法如下。水泥碳化钨污泥被煅烧并转化为氧化物（S200）。氧化的硬质合金废氧化物在溶解反应器中用NaOH溶液溶解（S400）。将未溶解的残余物从溶解反应器中过滤（S500）。将酸加入溶解反应器中，使钨酸沉淀并通过过滤装置过滤（S510）。将未溶解的残余物放入浸出反应器中，使钴用酸萃取，碱性溶液再次放入浸出反应器中，使钴作为氢氧化物回收（S520）。

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