Magnetic separation is separating components of mixtures by using different types of magnets to attract magnetic materials. The process that is used for magnetic separation detaches non-magnetic material from those that are magnetic.
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Magnetic separation can be used in different environments and markets, so are magnetic separators used primarily for recovering metal from waste or purifying secondary materials by removing metals. But magnetic separators are also used in electromagnetic cranes that separate magnetic material from scraps and unwanted substances. Magnetic separation is also used in the mining and mineral industry and plays a small role in the food and pharmaceutical industry. For example, to remove metal contaminants from product streams.
How is a magnetic separator used in recycling applications?
A magnetic separator consists of a powerful electromagnet placed or suspended from a ceiling or device. Materials can be passed over a tabletop magnetic separator, while suspended magnetic separators often hover over material to remove imperfections. Magnetic separators can also be cylinders that objects pass through.
In the recycling industry, magnets are commonly used to attract ferrous materials, such as tin, iron, steel, and many more. Magnets are found along assembly lines where they will be placed either above or below the conveyor belts to attract said materials or minerals.
The need to reduce and recycle waste is crucial to Hong Kong, with our large population and rapidly filling disposal facilities. Here you can find out why recycling is important, what the Government is doing to encourage it, how you can recycle waste and where to obtain more information.
Because Hong Kong has to deal with an unsustainable amount of waste in such a small geographical area, everyone needs to be aware of what we can do to improve the situation. Our landfills will be exhausted soon if waste levels continue to increase at current levels. So we all need to take responsibility and act now.
Whilst the Government takes the lead, it is essential to involve the whole community in reducing waste. The &#;Waste Blueprint for Hong Kong &#; unveiled in February sets out the vision of "Waste Reduction&#;Resources Circulation&#;Zero Landfill", and outlines the strategies, goals and measures to tackle the challenge of waste management up to .
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The Producer Responsibility Scheme on Waste Electrical and Electronic Equipment (WEEE), also known as WPRS, has come into effect in . It covers air-conditioners, refrigerators, washing machines, televisions, computers, printers, scanners and monitors (collectively referred to as regulated electrical equipment, or REE). Since 1 July , the scope of the enhanced WPRS has covered refrigerators with the maximum storage volume up to 900 litres, washing machines with the maximum washing capacity up to 15 kg, stand-alone tumble dryers and dehumidifiers. Under the WPRS, an REE seller is required to arrange for the consumer a statutory free removal service to collect a used equipment of the same class from the premises designated by the consumer in accordance with the law. Upon purchase of the REE item, the consumer is entitled to request the seller to arrange for delivery of the new item and removal of the used item of the same class on the same day without extra charge.
To properly dispose waste REE (or Regulated WEEE) for recycling, apart from choosing the statutory free removal service arranged by sellers in connection with a purchase of REE, members of the public may also make use of the following services:
Recycling Hotline ( ) / ( ) &#; members of the public can make an appointment with the Government's recycling service operator of WEEE·PARK for free door-to-door collection service.
GREEN@COMMUNITY - the community recycling network accepts Regulated WEEE for which will be transferred to suitable recyclers for handling.
Other than Regulated WEEE, small household electrical appliances can also be recycled, for example:
Rechargeable batteries are used in many types of portable electronic equipment, such as:
The public can bring those generated from household to a Collection Point for recycling. Moreover, compact fluorescent lamps and tubes generated from households can also be recycled.
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