According to the European Association of Recycled Toner and Inkjet Cartridges, nearly 500 million printer consumables cartridges are discarded in landfills worldwide each year. Although they have been "beaten", they still retain a residual capacity of 8% of the total weight. This is not only wasteful, but also allows supplies to penetrate the soil. The good news is that scientists have invented a way to turn waste into treasure and ironmaking. A research team led by Vaibhac Gaikwad, MD, of the University of New South Wales, Australia, placed the carbon powder in a furnace and then heated to 1550 °C (2822 °F), which converted the iron oxide to 98% pure iron.
It is worth mentioning that reserchers have used the polymer resin in the mixture as a carbon source for ironmaking very intelligently.Since steel smelting is also done at the same temperature.The process can be seamlessly integrated into existing facilities.In addition,the formation of toxic by-products can also be prevented at high temperature because the toner is recycled.