The reuse of raw materials refers to the use of various glass bottle packaging wastes that cannot be reused as raw materials for the production of various glass products. The glass products here are not only glass packaging products, but also other product wastes such as other building materials and daily-use glass products. This method consumes more energy than the first two recycling methods.
The addition of crushed glass in an appropriate amount contributes to the manufacture of the glass because cullet can be melted at a lower humidity than other raw materials. Therefore, recycling glass bottles requires less heat and the furnace body wear can also be reduced. The tests showed that the glass containers produced from recycled glass have the same transparency and container strength as the glass containers produced with new raw materials; and the use of recycled secondary materials can save 38% of energy, compared to the use of raw materials to manufacture glass products. Reduce air pollution by 50%, water pollution by 20%, and waste by 90%. In addition, since the loss of glass regeneration is small, the above recycling-recycling-use process can be repeated. Visible, its economic benefits and ecological benefits are very significant.