The de-coating is a thermal treatment applied on the aluminium
scrap, used to remove from the surface of the material all the
contaminants as paper, oil, links, paint, plastic.
The aluminium scrap is used as “raw material” to produce new
aluminium but before to be molten again has to be “cleaned”, i.e.
treated inside a de-coating unit, in order to reach the specific
characteristics requested. If the scrap is not cleaned (de-coated)
and is molten directly inside the furnace, the metal loss increases
and the presence of contaminants in the furnace might create
problems to the use of the regenerative burners, producing at the
same time an additional cost of the natural gas used in the
melting. The cleaning process is based on heating the aluminium
scraps in a controlled low oxygen atmosphere, through direct
convective exchange with exhaust fumes, which have been processed
into post-combustion chamber. The experience on existing pyrolysis
plants, allow to cover the following scraps: turning, cover,
ground, cans, tubes or caps, cables, sheets laminated with paper or
plastic, sheets coated.
The Can Paint Stripping and Thermal Decomposition Furnace is a
cutting-edge facility designed to efficiently remove paint from
aluminum cans while simultaneously thermally decomposing the
stripped coatings. This furnace employs advanced technology and a
controlled thermal environment to achieve optimal results. The
process begins by feeding the cans into the furnace, where they are
subjected to high temperatures within a precisely controlled
atmosphere. The heat causes the paint to gradually soften and
detach from the surface of the cans. Simultaneously, the stripped
coatings undergo thermal decomposition, breaking down into their
constituent elements. Through a combination of heat, time, and
controlled airflow, the furnace ensures thorough paint removal and
efficient decomposition. The resulting stripped cans are clean and
ready for further processing, while the decomposed coatings are
transformed into a harmless residue, minimizing environmental
impact. This state-of-the-art furnace offers several advantages,
including improved productivity, reduced energy consumption, and
enhanced environmental sustainability. By streamlining the paint
removal process and facilitating the decomposition of coatings, it
contributes to the efficient recycling of aluminum cans and
promotes a greener, more sustainable manufacturing industry.
Overall, the Can Paint Stripping and Thermal Decomposition Furnace
is a crucial component in the recycling and reprocessing of
aluminum cans, providing an innovative and eco-friendly solution
for removing paint and minimizing waste.
