FIELD: recycling and disposal of waste.
SUBSTANCE: invention relates to the processing of metallized packaging materials, in particular cartons for beverages or blister packs. Metallized packaging material is fed to a separation system in which metals soluble in hydrochloric acid and metals other than aluminum, which are iron or copper, are removed. Aluminum is dissolved in an acid to form an aluminum-containing acid solution which is subjected to filtration to separate the solid fraction of the polymer material. Filtered aluminum-containing solution is subjected to pyrohydrolytic treatment to form and remove alumina for subsequent isolation of aluminum. Resulting gaseous products by subsequent absorption or condensation are used to regenerate the acid.
EFFECT: method makes it possible to extract polymeric material and aluminum from packaging materials.
17 cl, 1 dwg
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2019 |
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|
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RU2732133C2 |
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| LAMINATED PACKAGING MATERIAL, METHOD OF PRODUCING LAMINATED PACKAGING MATERIAL AND PACKAGING CONTAINER MADE FROM SAID MATERIAL |
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