The answer is maybe. Some shredders can be adapted or are specifically designed to crush concrete. If the design allows for it, shredders can be a viable option depending on various factors.
Shredders have the added benefit of handling larger feed size. This could eliminate expensive preparation. Not only will a shredder designed for concrete handle large slabs and chunks, it handles long lengths of rebar and wire. Again, enabling contractors to minimize or eliminate preparation.
The cons would be a coarser and larger discharge size on average. In addition, the wear on the shredder could be more severe and more costly than a jaw or impact crusher.
It’s becoming more popular to use a shredder and crusher combination. The shredder would be in front of the crusher. Large pieces would be fed into the shredder first. The shredder would then convey the shredded/crushed material into the crusher to be further reduced and made into a more saleable product. A screening plant could be added in between the shredder and crusher or at the end of the process to separate material into various sizes. Using the shredder at the front of the process could eliminate an expensive preparation tool such as an excavator with a hydraulic hammer or cruncher.
Yes, there are cost considerations. However, the machinery investment, wear costs, fuel costs, etc. must make financial sense. If having two or three machines instead of one can also increase production rates, another consideration would be time.
For more details and/or questions, please call or email us at (803) 416-5200 or sales@rrequipment.com.
