A Fundamental Study on the Separation of Papers with Flotation Method and Sink-Float Method.

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  • 浮遊選別法および浮沈法を用いた紙の選別に関する基礎的研究
  • フユウ センベツホウ オヨビ フチンホウ オ モチイタ カミ ノ センベツ ニ カンスル キソテキ ケンキュウ

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In Japan the amount of produced paper is about 31 million tons in 1997, nevertheless the ratio of recycled paper from advertisement and wrapping paper was about 30%. Recently, it becomes a necessary to separate different kinds of papers before the recycling process and also to do research for the development of the new separation processes for paper recycling. In this study, the floatability of the newspaper and the advertisement paper was investigated by the flotation and sink-float method to separate effectively each paper.<BR>It was found that the sink-float method is able to separate the newspaper and the advertisement paper. Next, the suitable quantity of dispersion required for the highest separation's efficiency at the investigated condition was ligninesulfonic acid sodium salt 25 mg/little and aluminum sulfate 10 mg/little.

Journal

  • RESOURCES PROCESSING

    RESOURCES PROCESSING 48 (1), 3-8, 2001

    The Resources Processing Society of Japan

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