Scrap Collection

There are many ways to collect scrap materials. Recycling companies typically gather materials through community recycling stations, door-to-door collection, merchant partnerships, or specialized recycling points. After collection, preliminary sorting by material type is required—grouping the same metals together to facilitate subsequent storage and processing. The accuracy of sorting directly affects the efficiency of scrap metal processing and the quality of the recycled metal.

Shearing

Large waste items such as automobile shells, construction scrap metal, and oil drums can be sheared first to reduce their volume for the next processing step. For shearing light scrap metal, an alligator shear can be operated manually. Refer to the following for the operation process:

Shredding

Some scrap metal pieces, due to their relatively small size, can be directly fed into a shredder. For larger items, shredding is carried out after the previous shearing step. With technological advancements, some shredders can simultaneously sort materials based on different compositions, separating various materials and directing them into different hoppers after shredding. For a demonstration of how a shredder processes and sorts scrap metal, please refer to the following:

Baling or Briquetting

After shredding, scrap metal is transformed from irregular shapes into fragments of a few centimeters in size. These fragments can then be baled into rectangular blocks, cylindrical bales, or other shapes using a baler. For a demonstration of the baling process, please refer to the following:

If the metal is shredded into small granules, a metal briquetting press can be used to compress them into briquettes, further reducing storage space and facilitating storage and transportation. For a demonstration of the briquetting process, please refer to the following:

Sorted Storage

After being compressed into bales or briquettes, scrap metal is significantly reduced in volume and has a much higher density. The compressed scrap can then be stored in an orderly manner in a dry warehouse. This allows the warehouse to hold more scrap metal per unit area, effectively utilizing storage space and reducing overall storage costs. At the same time, due to the reduced volume, transportation efficiency is maximized in subsequent logistics, further saving on freight costs.

Smelting into Finished Products

Some medium to large recycling companies operate their own smelting businesses, where scrap metal is remelted and recast through specific production processes. Briquetted scrap metal offers several advantages in the smelting process: due to its high density and small volume, it reduces the frequency of furnace charging, shortens melting time, and improves furnace utilization. Briquettes have a smaller surface area exposed to air, effectively reducing oxidation rates—particularly for reactive metals such as magnesium and aluminum—significantly improving metal recovery yields. In addition, briquettes provide a more stable chemical composition, resulting in better melt bath stability during remelting, which helps enhance the purity of the recycled metal.

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