Recycling is a process which involves usage of the waste materials in the production of new useful materials. Glass is one of such material which is most commonly recycled. In our day to day life we use different kinds and colors of glass. This involves jars, beer bottles, wine bottles, Pyrex bowls, window glass and mirrors. Although all kinds of glass can be recycled, the commonly recycled glasses are jars, beer and wine bottles. Each glass has its own chemical composition and color. And also glass retains its color even after recycling. Hence, all types of glass can’t be mixed together in recycling. The recycled glass is as good as the new one.
The first step in the glass recycling process is collection and sorting. Used or broken glass is collected from houses, offices and public trashes in a dump truck and brought to the recycling plant. While collecting the scrap glass it might happen that all different types of glass, metals, plastic and any other foreign materials present in the dump. So, the useful glass has to sort out from its foreign materials. An electro magnet is used to remove all the metals from the dump. Screening systems and vacuum separates lighter waste items. While some of the foreign materials are handpicked. White glass is separated from brown glass and green from brown and so on. A separate bin is provided for each kind and color of glass.
After the process of sorting the sorted glass has to rinsed, washed and cleaned. Then it is checked for its purity and contamination. Once the glass has been sorted and cleaned it is sent to a crusher. The crusher breaks the glass in small tiny pieces called as cullet. Along with the raw materials required to produce glass i.e. Silica sand, soda ash, and limestone right amount of cullet is added and sent to a furnace. This mixture is heated and is converted into molten liquid which is further molded into new products.