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CUSTOMS TREATMENT WITH A COMPLEXER IN AT LEAST TWO MIXTURE LEVELS WITHOUT DIFFERENCES
CUSTOMS TREATMENT WITH A COMPLEXER IN AT LEAST TWO MIXTURE LEVELS WITHOUT DIFFERENCES
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机译:至少两个混合级别使用复合器进行海关处理
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摘要
A method of chlorine-free bleaching of pulp where metals are removed by means of a chelating agent. The chelating agent is admixed to the pulp in at least two subsequent mixing steps without intermediate washing. The stay-time between the mixing steps shall be less than 15 minutes, and the pulp is washed after the last mixing step.
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