They help separate magnetic metals such as iron and steel from non magnetic metals such as aluminium. Metals have to be melted down at different temperatures so it's essential the less dense metals are separated from 'heavier' metals. Using magnets is a way of doing this.
Industrial ceramic magnets otherwise known as large rotating drum magnets, are used by the metal scrap and recycling industries. The magnets are used to separate and process metals. If you are looking to recycle one of these magnets you can find a company that uses them for recycling.
iron
Some magnets are metal. Not all magnets are metal (though I can't offhand think of any magnets that don't at least contain metal), and not all metals are magnets.
Several different metals can be used in magnets. Iron is perhaps the most common metal used in permanent magnets, but alloys such as Alnico (Aluminum, Nickel, and Cobalt) can also make very strong permanent magnets.
Magnets are used to generate electricity by rotating them around a metal wire. Alternatively, rotate magnets within a coiled metal wire.
recycle products are those products which can be used again after recyclying.
bismuth
Horseshoe magnets are used to teach the properties of magnets to students. They are also used to pick up metal items.
BISMUTH
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There are magnets that can be used to pick up junk and collect metallic rubbish. There is also a super conductor that can make other metal objects hover to.
Magnets are usually metal, always metallic. A tool that cuts metal. A hacksaw for instance