e-mail: bok@dhit.pl

Neodymiums – wide shape selection

Need reliable magnetic field? We offer complete range of disc, cylindrical and ring magnets. Best choice for home use, workshop and model making. See products with fast shipping.

see full offer

Magnets for seabed exploration

Start your adventure involving underwater treasure hunting! Our specialized grips (F200, F400) provide safety guarantee and huge lifting capacity. Solid, corrosion-resistant housing and strong lines will perform in any water.

choose your water magnet

Professional threaded grips

Professional solutions for mounting non-invasive. Threaded grips (external or internal) provide instant organization of work on production halls. Perfect for installing lamps, detectors and ads.

see technical specs

📦 Fast shipping: buy by 14:00, package goes out today!

Dhit sp. z o.o.
magnets in recycling

Why should old windows be recycled?

|

Windows are made of several different materials. The main material for the glass, which is excellent for recycling. However, it needs to be properly processed to be recycled. Often, the dismantling is done by individuals who are not very environmentally conscious, resulting in much of the glass simply ending up in landfills. The situation is somewhat different for the frames. These are typically made of two materials: wood or PVC. Currently, it is estimated that nearly 80% of windows are made of PVC, which is excellent for recycling. PVC windows not only consist of the plastic itself but also a metal structure, providing adequate rigidity and durability. There are still handles, hinges, and fittings to consider - preferably, these should be removed, although modern recycling facilities can handle them as well. Therefore, it can be seen that PVC windows are almost entirely suitable for reprocessing. This has dual significance. Firstly, they won't be adding to waste heaps, further polluting our planet. Additionally, the materials from such windows can be reclaimed and reused, either in the production of new windows or for other purposes. There is also a growing trend of windows being removed intact during replacements and then sold to new owners.

How does it work?

The recycling of PVC windows involves several stages. When full frames with glass are subjected to this process, the first step is to separate the glass from the rest. Then, the frames and shutters are shredded in special mills to obtain what is known as coarse fraction. After shredding, the first stage of separation occurs, which involves capturing metal scraps using strong magnets. However, this method only captures elements made of ordinary steel; unfortunately, stainless steel, which is also used in window production, is not attracted by regular magnets. Therefore, in the second stage, the recycled material passes through HISC and SSSC magnetic separators. In these, pulleys with magnetic heads capture and separate weakly magnetic materials. However, after these two stages, some metal elements may still remain, so it is necessary to check everything using a metal detector and remove what it detects. Once the removal of metal elements is completed, PVC powder remains, which can be reused. This material can be recycled and reprocessed multiple times without affecting the quality and durability of the resulting elements.

Q&A - Questions and Answers

The key is separation. After grinding the window into granules, strong drum or belt magnets pull out pieces of steel and screws, leaving pure plastic ready for reuse.
Ordinary magnets catch stainless steel (fittings) poorly. Therefore, ultra-strong neodymium separators with a high field gradient are used in window recycling lines, which can catch even weakly magnetic steel.
Recovered PVC is used to produce new window profiles (so-called co-extrusion – gray center of the profile), sewage pipes, flower pots, or road posts. Steel goes to the foundry.

Source:

Tags:

#window recycling#carpentry processing#window magnets

poniedziałek 2020-03-02T18:00:00
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98