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    • 3. 发明授权
    • Process for removing thorium and recovering vanadium from titanium
chlorinator waste
    • 从钛氯化物废物中去除钍和回收钒的方法
    • US5494648A
    • 1996-02-27
    • US188863
    • 1994-01-31
    • Richard S. OlsenJohn T. Banks
    • Richard S. OlsenJohn T. Banks
    • C01F15/00C01G49/00C22B34/12C22B34/22C22B60/02
    • C01F15/00C01G49/0018C22B34/1213C22B34/22C22B60/02C01P2006/80
    • A process for removal of thorium from titanium chlorinator waste comprising: (a) leaching an anhydrous titanium chlorinator waste in water or dilute hydrochloric acid solution and filtering to separate insoluble minerals and coke fractions from soluble metal chlorides; (b) beneficiating the insoluble fractions from step (a) on shaking tables to recover recyclable or otherwise useful TiO.sub.2 minerals and coke; and (c) treating filtrate from step (a) with reagents to precipitate and remove thorium by filtration along with acid metals of Ti, Zr, Nb, and Ta by the addition of the filtrate (a), a base and a precipitant to a boiling slurry of reaction products (d); treating filtrate from step (c) with reagents to precipitate and recover an iron vanadate product by the addition of the filtrate (c), a base and an oxidizing agent to a boiling slurry of reaction products; and (e) treating filtrate from step (d) to remove any remaining cations except Na by addition of Na.sub.2 CO.sub.3 and boiling.
    • 一种从钛氯化物废料中除去钍的方法,包括:(a)将无水氯化钛废物浸入水或稀盐酸溶液中并过滤以从可溶性金属氯化物中分离出不溶性矿物和焦炭馏分; (b)从摇台上挑选步骤(a)中的不溶级分,以回收可回收或以其他方式使用的二氧化钛矿物和焦炭; 和(c)用试剂处理来自步骤(a)的滤液,通过加入滤液(a),碱和沉淀剂将其与Ti,Zr,Nb和Ta的酸性金属一起过滤沉淀并除去钍 沸腾的反应产物浆液(d); 用试剂处理来自步骤(c)的滤液,通过向反应产物的沸腾浆液中加入滤液(c),碱和氧化剂来沉淀并回收钒酸铁产物; 和(e)处理来自步骤(d)的滤液,通过加入Na 2 CO 3并煮沸除去Na外的任何剩余的阳离子。