发明名称 Eliminering av metalljoner vid blekning av massa
摘要 Methods for bleaching chemical pulps are disclosed including a final bleaching sequence of bleaching with chlorine dioxide, treating with a chelating agent, in which the bleaching and treating steps are carried out in sequence without an intermediate washing step, washing the bleached pulp, and bleaching with hydrogen peroxide.
申请公布号 SE514697(C2) 申请公布日期 2001.04.02
申请号 SE19940002885 申请日期 1994.08.31
申请人 VALMET FIBERTECH AB 发明人 MAARTEN *DAHL
分类号 D21C9/10;D21C9/14;D21C9/16;(IPC1-7):D21C9/10 主分类号 D21C9/10
代理机构 代理人
主权项
地址
您可能感兴趣的专利