Scrap Metal Shredder VS Scrap ​Metal Crusher

How to choose between scrap metal shredder and scrap metal crusher?

In the world of scrap metal recycling, the Scrap Metal Shredder  and the Scrap Metal Crusher are two of the most photographed “hardcore” machines. Although they are both ultimately designed to make large pieces of waste smaller, if you think they are the same thing, you may be at a disadvantage when building a plant.

Simply put, the difference between the two lies not only in the “looks”, but also in its design philosophy: one is to rely on “raw tear” to reduce the capacity, and one is to rely on “hard smash” to purify.

Core function: the difference between capacity reduction and purification

Metal shredder: the “dismantling officer” for rough work and heavy work

The core action of a shredder is“shearing and tearing ”. It usually adopts low-speed, high-torque dual-axis (or multi-axis) knife disk, like scissors to shred the material.

Its task: To deal with large volume, complex shape of the “big guy”, such as car shells, scrap iron barrels, color steel tiles or large bundles of wire.

Discharge shape: 100-300mm irregular long strip or broken pieces.

Final purpose:“Volume reduction ”. Reduce the volume first, easy to transport or load into baler.

Metal crusher: the “alchemist” of fine processing.

The action of the crusher (mostly referred to as hammer crusher) is“impact and rubbing ”. It relies on the high-speed rotation of the hammer head, against the material a “violent crazy output”.

Tasks: Processing of shredded fragments, small pieces of scrap, appliance housings or aluminum engine parts.

Discharge shape: 10-50mm ball, granular, very clean and dense.

Final purpose:“Value-added ”. Through high-frequency impact to strip paint and impurities, increase the specific gravity of the heap, directly into the steel mill's favorite “high-grade furnace charge”.

Working Principle: The Game of Force and Kinetic Energy

Shredder (low speed and high torque): It is like a pair of mechanical jaws. The two shafts rotate in opposite directions, hooking the material and pulling it in. Even when it encounters tough scrap steel, it can forcefully shear it by the huge torque. The process is much like we are shredding paper, steady and accurate, but not fast.

Crusher (high speed and high kinetic energy): It is like a high speed pile driver. Dozens of hammers driven by the rotor high-speed swing, the material in the cavity is not only hit by the hammers, but also with the liner collision, and the material friction with each other. This “chaotic battle” mode can shake off all the rust and paint on the surface of the metal, and press the metal solidly.

Intuitive Comparison: See the Difference in One Table

Expert selection advice: not “choose one”, but a “combination of punches”

In the modern scrap crushing production line, the two are often  outpost and guard  relationship. 

1. Golden combination of programs: 

first shredder as the “primary broken”, the whole car or large pieces of material torn, reduced capacity; then through the magnetic separation screen off impurities, and then send the metal into the Crusher for the “fine broken”. Then the metal is sent to the Crusher for “fine crushing”. The purity of the particles is very high and the selling price is also the highest.

2. Single machine selection reference: Selection of shredder

 Select Yuxi scrap metal shredder: If you are mainly to solve the problem of “can not be put, can not be pulled away ”, or the material is too messy and chaotic, the priority is to choose the shredder.

  choose scrap metal crusher: If your source itself is a small material, pressure block, and you want to  “sell at a high price ”, directly on the crusher, the material to do beautiful.

Summary

In a word:  Shredder is to turn the “big” into “small”, crusher is to turn the ‘miscellaneous’ into “fine”.  Understand what their raw materials, want to sell to what kind of terminal (whether to sell to the baling yard or directly into the steel mill steelmaking), this choice is not difficult at all.