Glass mainly consists of lime, soda, and quartz sand. These three components are milled together finely, mixed with one another, and melted at about 1600°C in a furnace. When the molten glass is cooled to l000°C, it can be shaped into different objects. Depending on the intended use, the glass objects are shaped by pressing or drawing the molten glass. The used glass that we collect is also a valuable raw material, as it can be processed to make new glass objects.
