Analysis and Countermeasures against Stickies Occurring at Deinked Pulp Process

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  • DIP粘着異物の解析と対策
  • DIP ネンチャク イブツ ノ カイセキ ト タイサク

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Abstract

In Hachinohe mill, deinked pulp (DIP) with high brightness is produced. The pulp is mainly made of sorted colored ledger. However, the procurement of sorted colored ledger has become difficult by the rising price of all over waste paper. Therefore, we are forced to use several types of waste paper such as waste magazine. With the increase of usage of waste magazine, quality trouble caused by stickies was increasing.<BR>To reduce the stickies, we analyzed the DIP process and characteristic of the stickies. The stickies become small through the process not only by shearing force but also by chemical function. Much stickies was removed by screening than by floatation, but we recognized that the floatator was able to remove problematic stickies. As a result, improvement of removal of the stickies by floatation induced achievement of decrease of the quality trouble.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 66 (10), 1103-1107, 2012

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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