Metal credit card material

The materials of metal credit cards usually include stainless steel, aluminum, and 24K pure gold coating that may be used in some high-end models.Among them, stainless steel is widely used for its excellent corrosion resistance, heat resistance, low temperature strength and mechanical properties.This material is not only beautiful, but also has good corrosion resistance and can demonstrate its inherent surface properties without additional color plating.Aluminum credit cards, on the other hand, have higher plasticity and can be produced in more diverse shapes and designs.

Why recycle metal credit cards

Recycling metal credit cards is of great significance, as these cards are mostly made of stainless steel and aluminum magnesium alloys that can be infinitely recycled. If discarded casually, metals that are difficult to degrade will occupy landfill space for a long time, and surface heavy metals or chemical coatings may contaminate soil and groundwater; Burning will produce harmful ash and gases, deteriorating air quality. Recycling and utilization can enable metals to regain high performance after refining and purification, and be used again to manufacture new products, reducing dependence on primary minerals. Taking aluminum as an example, the carbon emissions of recycled aluminum are much lower than those of primary aluminum smelting. The carbon emissions reduced by recycling one card are equivalent to the carbon absorption of one tree sealed in one year. Therefore, recycling metal credit cards is key to promoting a circular economy, curbing pollution at the source, and reducing carbon emissions, providing feasible solutions for addressing resource shortages, environmental pollution, and climate change.

Metal credit card recycling process

The metal credit card recycling process adopts systematic processing technology to achieve resource regeneration: firstly, it is roughly crushed by a dual axis shredder to decompose the entire card into 50-80mm fragments; Then enter the secondary crushing process, using a hammer crusher to refine the material to a particle size of less than 10mm, and simultaneously complete the physical dissociation of the metal layer and plastic substrate; The crushed products are separated into metal rich groups based on density differences by an oscillating airflow sorting machine, and then ferromagnetic impurities are extracted by a permanent magnet drum sorting machine. Finally, eddy current sorting technology is used to achieve high-purity separation of non-ferrous metals such as stainless steel/aluminum; After the separated metal particles are degreased by alkali washing and rust removed by acid washing, they are refined and purified in a vacuum induction furnace to produce regenerated metal ingots that meet ASTM standards. These ingots can directly replace raw materials for business card printing, electronic components, and industrial product manufacturing; The entire process is equipped with bag dust removal and activated carbon adsorption systems to ensure that exhaust emissions meet standards and form a complete closed-loop recovery system.

Recycling equipment

Aluminum plastic plate metal card recycling