Ceramics and stones do not melt at furnace temperatures. Large ceramic pieces and stones can become stuck in feed lines, while smaller stones can cause imperfections in the finished product, causing product rejection rates to skyrocket. Glass that can be recycled includes all containers such as soda bottles, beer bottles, food containers and home canning jars. One of the questions frequently asked by Recyclers concerns how much glass is actually available in a given city or town. The chart at right gives an approximate guide you can use in your planning.
Colors are important .
Many people wonder why three colors are used in the manufacture of glass bottles. The reason is a simple one most products are placed in clear bottles, called flint, to enhance product appeal. However, some products degrade if exposed to sunlight. No mixing of glass colors is permitted because most glass- container customers will not tolerate variances in glass color. Keep in mind no machinery automatically removes ceramics or stones from the glass or separates glass into three colors.