Sorting technology of glass packaging waste

Glass packaging waste is often mixed with other packaging waste and other household waste. In addition to traditional manual sorting, modern technology can also be used for sorting.
1. Sorting by gravity Firstly, by using different densities of substances, through air separation equipment, coarse-density materials and dense-density material materials are roughly separated, and then the dense material dropped at the bottom of the container is further sorted. For example, high density glasses and metals are re-sorted by common shakers.
In addition, inertial methods can also be used for sorting. Common equipment includes ballistic sorters, anti-ballistic sorting machines and sloping transport sorting machines; centrifugal sorting methods can also be adopted from a large number of materials with lower density. In the middle, the denser glass and metal are selected. The equipment can use a ring screen or a rolling ring, relying on a rotating centrifugal force to move the glass and metal to the outside and the less dense material to the inside. After the dense glass and metal are separated from the garbage, the glass and metal are separated again by magnetic separation.
2, the use of heavy media for sorting First fine magnetite or ferrosilicon alloyed into a water suspension, and then crush the garbage or packaging waste placed in the heavy medium, the density of small floating floating, high density The glass precipitate is separated. This heavy medium can be used repeatedly to reduce the cost of sorting.
3. Sorting using optical technology In order to separate colored and colorless glass, electronic color pickers can be used for sorting. The method is: the glass is crushed into fragments of 6 to 16 mm, placed on a belt conveyor to form a line, sent to the photocell with a special background, on the way to the landing to detect by optical methods, will Colored glass or other debris is blown open by means of an air cap.
IV. Recycling of glass packaging waste 1. The glass bottle cans are cleaned and sterilized. The surface of the glass bottle cans is smooth and neutral. No additional coating is required. Easy to clean and easy to re-seal. If used properly, a bottle can be used about ten times. Recovered empty bottles can be reused only if they are carefully cleaned and sterilized. The key to the reuse of glass jars is bottle washing and disinfection. The inside and outside of glass jars must be cleaned, and a certain cleaning speed must be guaranteed. In order to guarantee the quality and speed of the glass bottles, mechanical equipment must be used. As for the disinfection of glass bottles, according to the requirements of the contents of the selection of disinfection and sterilization process, and then determine the disinfection of sterilizing liquid and mechanical equipment.
2. Reflow treatment of glass packaging waste If the glass packaging container can no longer be used, it has already been damaged or it has become scrap, and it can be returned to the furnace. Remelting processing not only saves raw materials and soda ash for glass production, saves energy and time, but also acts as a fluxing agent.
Recycling broken glass is the result of more than 20 years of scientific and technological progress. Prior to this, the glass factory had controlled the amount of broken glass to be contained within 10%. The reason was that the recovered shredded glass was dirty and contained various impurities such as iron, aluminum, paper, plastic, and cork. , stones and broken tiles, etc., but also the complex components of the broken glass, particle size is not uniform.
The smashed glass remanufacturing must strictly control the three major barriers: it is the pre-processing treatment. The collected cullet must be carefully sorted, washed, shredded, and blended in order to ensure that the glass is subjected to rigorous compositional testing and analysis, and that the rest is the basis for a practical process recipe; the third must be a good one. According to the specific circumstances of the production process, and in strict accordance with the actual operation of the process.