Placer Washplant Scalper
I have a 2' by 6' Simplicity with 1” screen wet deck.
I’d like to overlay the deck and hopper with a 3’ to 4’ wide by 16' long grizzly, perhaps the rubber version you referred to earlier.
The objective is to wash gold bearing clay from oversize, and eliminate additional step in waste handling.
Do you have any suggestions on this and how to enable the migration of oversize material, i.e.: Sub-frame vibration... ■
One Or Two Deck Simplicity?
SOME THOUGHTS for you to ponder:
- is the screener a one or two deck?
- if one deck.....why not just install rubber grizzly deck, side tensioned on it ......instead of 1" wirecloth?
- Install WASH lines overtop on extended pipes, up and over
- bash the big stuff with bucket to allow to pass over 26" width screener
- break some other way
- build a little stationary grid, to keep 3' diameter off 2' wide unit
- consider using like a railway tie as grizzly arrangement
- buy a cheapo used 3 or 4 wide screen to handle it
- careful adding weight.....could be trouble with stroke BUT....
- YOU really just wanna WARSH the stuff so stroke no so critical
- pic of screener?
- angle of screener?
- go into a sink float screw after screener to float fines out
GOOD LUCK.........Gold in them hills.......George ■
Re: Plugging Grizzly Bars?
Grizzly bars should be deep and tapered from feed to discharge, e.g. 4" at feed and 6"at discharge. This is accomplished by tapering the "cap" or top of bars. Also the cap should be peaked. You can accomplish this by using slats of wear plate stacked wide to narrow on top (pyramid), or the easier and longer lasting solution use weld (build up) to achieve this. I have never had a plugging problem. ■
PLUGGING GRIZZLY bars?
Many times when I speak on site to operators of big BRUTE FORCE FEEDERS we find:
1. They are stopping many times to bang rocks outa there grizzlies
2. One fellow I noticed up on his catwalk, had 2 sledge hammers laying up there. He says 1-2 hrs a day he and another guy pound away trying to clear the carrots out of the bar spacing.
This is a typical scenario, almost everywhere. Any there are lots of ideas for doing this differently. Some people just say the hell with it and PLATE OVER the grizzly and pass fines and all thru MR. JAW CRUSHER.
Others make the standoffs for the bars much deeper in profile so the long slabs do not COMPLETELY catch the cross supports the grizzly bars are being support on and kinda ROLL out of the hole a little easier. Key point, kinda easier......not a perfect solution.
Here is one I saw that works. A big account in NEW YORK state took a piece of heavy rubber with 4" square punched holes in it and kinda half baked attached it across the bars JUST TO TRY. he actually took a couple of grizzlies out. And you know, it kinda worked. NO PLUGGING , but, crude test.
He then ordered a new section of HEAVY RUBBER CLOTH, to fit the width of the machine, replaced the grizzlies and he honestly has ZIP ALL PLUGGING. Cost was plus minus $2500 USD for the rubber and in for now about 8 years and looks great and no stones stuck in it and feels good for another 2-3 years.
MONEY SAVED he figures is mega and he is right.
Just goes to show you.............keep your eyes open for new ideas.... ■