Recycling of integrated circuits : master's thesis

Porastom količina otpada postajemo sve svjesniji problema potrebe za zbrinjavanjem toga otpada. Odlaganje na odlagalištima nije pogodno zbog opasnih tvari koje se mogu naći u otpadu te zbog gubitka sekundarnih sirovina koja ostaju odložena na odlagalištima. U radu su prikazane količine elektroničkog otpada koje danas nastaju i za koje se očekuje rast u budućnosti te propisi koje donosi europska komisija kako bi potaknula recikliranje elektroničkog otpada. Provedena su ispitivanja u svrhu recikliranja integriranih krugova metodama za oplemenjivanje mineralnih sirovina (gravitacijska koncentracija, elektrostatička koncentracija i separiranje u zračnoj struji), te su utvrđeni tehnološki pokazatelji separacije za korištene postupke.Abstract: With the increasing amount of waste we become aware of the problems with the need for disposal of waste. Landfilling is not suitable because of hazardous substances that can be found in the WEEE waste and because of the loss of raw materials which remain deposited in landfills. This paper presents the data about the amount of WEEE which nowadays is generated and which rates are expected to grow in the future, as well as regulations issued by the European Commission to encourage the recycling of WEEE. Tests were carried out for the purpose of recycling integrated circuits by methods for mineral processing (gravity concentration, electrostatic concentration and separation in the air flow), and technological indicators have been calculated for used separation methods