| 摘要 |
The invention provides separation method of composite packaging ingredients, containing a polymer film, aluminium and/or cellulose and including steps in which the waste is initially broken down, an extraction of the polymer fraction is performed using xylene or other organic solvents such as benzene, toluene, cumene, ethylbenzene, naphtha, chlorobenzene, dichlorobenzene, bromotoluene, followed by separation of insoluble ingredients by grinding them down in a mixer, the precipitate of aluminium and cellulose particles is transformed into a liquid suspension with density higher than cellulose density and lower than aluminium density which is next dosed into a separator, whilst polymer solutions are evaporated in order to regenerate the solvent, and the initial polymer ingredient of the processed waste is separated. The invention is also related to a device for separation of composite packaging ingredients, in which a tank (1) contains sections with groups of horizontal strings (2, 3) located above and below the level where suspension is introduced, fixed on frames and set up in groups with string distance of 10 to 30 mm, more preferably 15 mm to 20 mm. |
