The existing containers include tin cans, aluminum cans, paper and plastic containers. The recycling characteristics of these containers are different, but the recycling of iron cans is superior to other packaging containers.
Based on the international environmental management standard ISO-14000, tin cans with the characteristics of low pollution, recyclability and resource saving will have wider development space in the future packaging use:
- Low pollution:
In fact, the main raw material tinplate in the iron can container is harmless to the environment and can be naturally decomposed. Because when the tin can exist in the environment, it can be naturally oxidized to return to the original iron oxide state and return to nature, so the stacking of waste tin cans can be decomposed by time and will not cause environmental pollution. At the same time, it is unnecessary to cut down trees to make iron cans, so as not to damage the ecological balance.
The metal tin can itself has a feature that other packaging materials do not have – it can be absorbed by magnets. In this way, the magnetic separator can be used to separate the iron can from the waste by magnetic force. This feature can easily achieve the effect of recycling 80% of the iron cans in the waste. The invention of the environmental protection cover not only makes the use of metal tin cans safer and healthier, but also effectively reduces the amount of garbage, which has direct and obvious benefits for recycling operations.
- Energy Saving:
In terms of removing other pollution residues on metal cans, chopper equipment has been developed, which can effectively remove more than 98% of pollutants and provide high-quality scrap iron. In addition, the United States also pointed out that the existence of aluminum easy to open covers is conducive to the reprocessing of scrap iron, because it can reduce the amount of hot metal used in steelmaking and reduce the cost of overall steel manufacturing. In addition, in terms of energy conservation, the report points out that compared with iron ore production, the production of iron and steel from tinplate scrap can save about 230 m3 of natural gas per ton of scrap iron, so the recovery and reproduction process of iron cans can reduce the impact on the global environment and energy, which is consistent with the future product trend.