Aluminium and paper separating and recovering technology for waste aluminium foil paper leftover

Aluminium and paper separating and recovering technology for waste aluminium foil paper leftover

  • CN 1,115,436 C
  • Filed: 05/05/1998
  • Issued: 07/23/2003
  • Est. Priority Date: 05/05/1998
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of aluminium of waste aluminium foil paper rim charge, paper separate and recovery technology, it is characterized in that:

  • reclaim and undertaken by following step;

    1. hot-water soak;

    with the waste aluminium foil paper rim charge insert 1 ‰

    -1% concentration by Na 2CO 3Or NaOH or other receive in the solution that salt makes, and solution temperature is controlled at more than 60 ℃

    , soak time 15~

    180 seconds;

    2. cold water soak;

    the waste aluminium foil paper rim charge is picked up from hot water, insert in the cold water and soak;

    Soak time 1-3 days;

    3. rub paper;

    the waste aluminium foil paper rim charge that will be immersed in the cold water is rubbed paper with rubbing the paper machine, obtains the A product;

    4. filter paper;

    the A product are filtered with the filter paper machine, obtain isolated aluminium and paper pulp;

    5. purify;

    add the full Ca (OH) that closes in the paper pulp after filtration 2Or other hydroxide solutions, through stirring, precipitating, can get pure paper pulp after drawing water.

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