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View Full Version : Chipping Gypsum


leadarrows
03-30-2004, 12:22 AM
OK this might not belong in the off topic area but I don't know where to put this for sure so here will have to do.
Has any one ever tried running drywall thu a chipper?
The reason I ask is I haul between 9 and twelve tons of drywall to the dump every week and if I could grind it up some how I could use it as a soil amendment instead and save myself about $15,000.00 a year in dump fees. Now there is a company that makes a machine that will do this but the cost for this is about $500,000.00 just for the machine and that doesn't count other handling equipment like a paper bailer for the paper it strips off the board and belt conveyor to move the gypsum and storage building etc. But if I just chipped the board one load at a time directly into my fields and worked it in with a tillage tool I could put about 3 tons on an acre and save myself all that trouble and money. what do you all think? Will it work or is it a bad Idea? The EPA did a study and approved grinding building materials like drywall,bricks wood and such for on site disposal. So I don't see why they would have a problem with this idea they just wont let me bury it in piles. It has too be spread out in a uniform matter after being ground up some how. My question is what will drywall do to a chipper? I wouldn't want to rent one to find out if it would damage it. Any one have an idea about this?

Steve Frazier
03-30-2004, 06:57 AM
I'm pretty sure the gypsum would dull the knives on a chipper almost immediately. A tub grinder would work better for this, although I don't know how much better.

What also might work fairly well would be a stone crusher. You would need to find an antique one somewhere, they made smaller units then. I'm afraid anything you use will be expensive.