Waste sorting machines are important equipment for modern urban domestic waste treatment. Their main function is to classify mixed waste through various technical means for subsequent resource utilization and environmental protection treatment. Waste sorting technology not only improves the efficiency of waste disposal but also helps reduce environmental pollution and achieve the recycling of resources. The following is a detailed introduction to several main waste sorting technologies and their applications:
1. Air Sorting Technology
Air sorting technology uses air currents to separate light and heavy materials in waste. The basic principle is that through air flow, lighter materials (such as paper, plastic, etc.) are blown up and carried away, while heavier materials sink due to gravity. This technology is commonly used for sorting recyclables such as waste paper and plastic.
2. Magnetic Sorting Technology
Magnetic sorting technology is mainly used for the sorting of magnetic metals in waste. After the material enters the sorting area of the magnetic sorter, magnetic materials are affected by the magnetic force, while non-magnetic materials are not affected, thus achieving separation. This technology is widely used in the recovery of magnetic metals such as iron, nickel, and cobalt from waste.
3. Bounce Sorting Technology
Bounce sorting machines are designed for inorganic particles after coarse crushing. They separate inorganic particles from other materials through the bouncing action of the conveyor belt. This equipment can efficiently sort out inorganic materials during the waste treatment process, improving the efficiency of subsequent treatment.
4. Density Sorting Technology
Density sorting technology classifies materials based on the differences in their densities. Waste passes through different media (such as water, air, etc.), and due to different densities, it produces different settling speeds or floating behaviors, thus achieving separation. This technology is suitable for sorting a variety of materials, including organic waste and inorganic materials.
5. Automatic Sorting Technology
Automatic sorting technology combines mechanical equipment, intelligent control, and microbial treatment in various ways, capable of sorting waste into different categories, such as oversized waste, black metals, non-ferrous metals, plastic products, foam plastics, and blocky organic matter. The purity of this technology's sorting can reach over 85%, with a resource regeneration rate of up to 80%, and wastewater, dust, and bacteria and viruses can be effectively treated.