会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • METHOD FOR PREPARING HIGH PURITY ZINC OXIDE USING SECONDARY DUST
    • 用二次粉尘制备高纯度氧化锌的方法
    • WO2010074516A3
    • 2010-09-30
    • PCT/KR2009007741
    • 2009-12-23
    • POSCORES INST IND SCIENCE & TECHLEE JAE-YOUNGBYEON TAE-BONGAHN JOONG-CHULPARK HYEONPARK BO-HA
    • LEE JAE-YOUNGBYEON TAE-BONGAHN JOONG-CHULPARK HYEONPARK BO-HA
    • C01G9/00C01G9/02
    • C01G9/02C01P2006/80
    • The present invention relates to a method for preparing high purity zinc oxide used for the electronics and rubber industries, and has as its objective to provide a method for preparing high purity zinc oxide used for electronics and rubber industries by utilizing secondary dust generated in the process of recycling stainless dust. The key point of the method for preparing high purity zinc oxide of the invention is a method wherein secondary dust generated in the process of recycling stainless steel dust is leached with an aqueous solution of hydrogen chloride to selectively dissolve zinc and prepare an aqueous zinc solution, impurities including iron, chrome, fluorine, lead, and cadmium are removed, NaOH is added to dissolve zinc into an aqueous alkaline zinc solution and filtration is performed under conditions of pH 14 15, high purity zinc chloride is added so that the mole ratio of OH: zinc may reach 2.0 3.0 to prepare high purity zinc oxide directly, washing is carried out to remove NaCl, and the sludge of the high purity zinc oxide is filtered and drying is carried out to prepare high purity zinc oxide. According to the invention, the industrial byproduct dust can be turned into a resource for high purity zinc oxide so that it becomes a high-value-added product.
    • 本发明涉及一种用于电子和橡胶工业的高纯氧化锌的制备方法,其目的是提供一种利用该工艺中产生的二次粉尘制备用于电子和橡胶工业的高纯度氧化锌的方法 回收不锈钢粉尘。 本发明制备高纯氧化锌的方法的关键在于,在回收不锈钢粉尘的过程中产生的二次粉尘用氯化氢水溶液浸出以选择性地溶解锌并制备锌水溶液, 除去铁,铬,氟,铅,镉等杂质,加入NaOH使锌溶解于碱性锌水溶液中,在pH14〜15的条件下进行过滤,添加高纯度氯化锌,使 OH:锌可以达到2.0 3.0以直接制备高纯度氧化锌,进行洗涤除去NaCl,过滤高纯度氧化锌的污泥并干燥以制备高纯度氧化锌。 根据本发明,工业副产品粉尘可以转化为高纯度氧化锌的资源,从而成为高附加值产品。