| 摘要 |
<p>In the method, an aqueous solution is prepared to contain sodium hypochlorite 10-30kg, caustic soda 1-3kg, penetrant in small amount in 5 tons of water and is added with 200kg of waste paper of polyethylene coating. The solution is kept at 30-60 deg.C while the waste paper is pulped by a high speed pulper, and is passed through a filter to recover the cemichals in solution. The solid pulp after filtering is washed and screened with a suitable pulp concentration to recover the pulp removed of the resin coating.</p> |
