Posted 8/4/2018 18:57 (#6910866) Subject: What size screen to use grinding corn and how many bph can I get through it?
east central MN
So I've been contemplating grinding my own corn on farm for a while and I was looking at used grinder mixers wondering what size screen I would have to run to get a really fine grind on my shell corn. Id love 500 microns but I don't know if I can grind it that small in that type of hammer Mill. anybody have suggestions on what size screen I should be looking for to put in a machine? And also what kind of fruit put I will get running that screen? I need to grind about 10 tons a week give or take. TIA
Posted 8/4/2018 19:51 (#6910949 - in reply to #6910866) Subject: RE: What size screen to use grinding corn and how many bph can I get through it?
Lander, WY
We run 5/32 and get around 700, I think about 5-700 lbs per minute depending on moisture... but that's not a tractor powered grinder/mixer, it's a hammer mill with a 50 hp electric motor. Call Jacobs Corporation, they know hammer mills and can tell you what screen and an approximate power need...
Posted 8/5/2018 01:11 (#6911363 - in reply to #6911218) Subject: RE: What size screen to use grinding corn and how many bph can I get through it?
eweland - 8/4/2018 21:59 4440 on a gehl 170 1/8" screen as it looks right now so I should get close to your numbers
Maybe close but probably not quite.
2 reasons
1) While your tractor is pretty close to the same hp, your mixer has a self contained hyd system that is a parasitic drain on your available power. Our grinder does not have a hyd system on it and we drop the corn into the mill with an electric auger.
2) Our mill is 26" wide, I think yours is 21". If the screen wrap is the same you only have 80% of the screen area that we do.
With a screen that small I really believe that the amount of open area in the screen is what limits how much can get through.
I think you'll be closer to 500-550 lbs/min. Which will still get 10 ton/week ground in a reasonable amount of time.
Posted 8/4/2018 20:59 (#6911088 - in reply to #6910866) Subject: RE: What size screen to use grinding corn and how many bph can I get through it?
SC Wisconsin
I run a gehl 65 and it is slow, but my dad has a new Holland 356 I think and it will eat corn pretty quick, takes less than 10 minutes to grind 5000 pounds. We feed it slow at a high idle so it just cracks it but I'm sure it would take it faster at full throttle. The new artsway grinders look awesome and I definitely have one on my wish list for the future
Posted 8/5/2018 12:52 (#6912113 - in reply to #6911656) Subject: RE: What size screen to use grinding corn and how many bph can I get through it?
scmn
Grinding that fine can easily add 5 to 10 pounds milk production per day. The goal is more easily digestible energy so the finer the better; it makes a tmr more energy dense.
Posted 8/5/2018 15:39 (#6912394 - in reply to #6911656) Subject: RE: What size screen to use grinding corn and how many bph can I get through it?
east central MN
It's currently that fine (damn near flour is perfect on dry corn) we use the forages to control rate of passage. I have the mill grind it now and I know I won't grind myself cheaper than they can but I'm paying freight both ways and it's adding $0.65 a bu to my cost at the least. If I set it up correctly I believe that I have a opportunity to save 5-8k a year by grinding on farm but I need to be able to get it reasonably close to the same particle size.
What size screen to use grinding corn and how many bph can I get through it?
