Sunday, June 16, 2013

Take better advantage of your Screener

WHEN Magazine May 2013

Take better advantage of your Screener
Trying to become more efficient in today’s business world is number one. Maximize your processes and net greater revenue at year end. Step back and take a look and see what you can improve by using what you have.
I had a question this week about removing stone from some woody materials which opened up an opportunity to sell a machine, or to just suggest trying something new. Most Companies in this industry are screening something somehow. When we are screening, we generally end up with our finished materials and some sort of overs or waste product. Instead of making the overs just a product to pile up for reprocessing, try adding an additional process to make more usable products without touching it again.
Generally, with screeners, you will have a consistent flow with a lower volume on the overs belt which is perfect for adding additional processes. Here are a few things to try:
·         Use that consistent flow rate to feed a stand-alone Stone Separator. The lower volume flow makes it perfect for separating any stone or rock from your lightweight materials.
·         Use the consistent flow rate to feed a stand-alone plastic separator. Again, the lower flow makes it much easier to remove the inert contaminants.
·         Feed a smaller screen and make an additional separation. Because the flow is so low, adding a small trommel for example is easy to do and it can make an additional spilt of materials before any material hits the ground for the first time.
·         Add a Head pulley or cross belt magnet and remove the ferrous contaminants.
·         Add a stone trap belt to remove the stone. These are small and inexpensive and work fairly effectively.
·         Adding an additional waste chute to each deck of a double deck, flat deck screener will split the overs for you. This is especially easy to do for a typical topsoil screener.  You instantly have a 3 product machine.
·         Feed a small grinder. You don’t need 1000 horsepower to grind this flow rate, save the fuel and take advantage of the consistent low volume flow.
·         Add a watering system to bring moisture back to compost piles
                Another idea is to create an additional product. What if the overs from your topsoil screen had the 3 inch and over material removed so you had a consistent 3 inch minus topsoil. You would have a new product that was good enough for filling some areas or for topdressing in commercial applications. You could do the same with a mulch product. A consistent 4 inch minus mulch looks good on the side of the highway or on slopes because it is consistent, not contaminated with large pieces, and will hold its form much more than a finer product and last longer.
Think of your process, what do you need to do to your waste product to achieve your desired result and how can you take advantage of this free feed hopper?

Dave Whitelaw       

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