sluicing question

[tweeta_bear]

i have my keene A52 with a header box and a 2200gph pump with a slope of 1' per ft.... my 1/4 classified material seem to be building up in fron of my riffles. do i increase the slope a lil or increase the water flow? im stumped! maybe i just need to slow down and let it blow out?

 

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[goldenIrishman]

I think you may need to slow down on the feed rate just a bit but since you're using it as a re-circ system you can experiment with the flow and angles as well and still re-run the tailings. That is one thing I love about re-circ systems! It's easy to try different settings without fear of loosing gold.

 

[team sidewinder]

It looks like you have good water flow. Maybe increase the angle a bit steeper and just let it run longer. IHMO

 

[tweeta_bear]

thanks guys... yeah im increasing my slope a lil.

 

[mxer47]

By looking at your pictures it may help you to settle out the tailings by staging your water. I run a 5 gallon bucket inside a 25 gallon container. Use the 5 gallon bucket to catch and disposer he tailings. If your pump is submerged mount it up high the bigger container so the clay will settle out. I don't think this will help your problem but to will keep your water cleaner.

 

[tweeta_bear]

i think it just where im getting my material. i wish i could keep it clean.

 

[mxer47]

That picture shows your setup nicely. Disregard my post it looks like you've got it handled.

 

[tweeta_bear]

lol ive been tryn to get it right.

 

[Goldwasher]

not enough flow

 

[tweeta_bear]

2200gph is not enuff flow?

 

[tweeta_bear]

here is a small video of it flowing.

https://t.co/jM2b9mO348

 

[tweeta_bear]

found this in my first 5gallon bucket!

 

[goldenIrishman]

Keeping water clean is not something that's easy to do around here. Between the soil and the small pieces of plant matter that are mixed up in it it's darn near impossible. I ended up making a box for my pumps out of 1/4 hardware cloth covered with window screen. It hangs on the edge of the tank and does a really good job of keeping the nasty stuff out of the pumps. I have had it start floating when the window screen gets coated with crud. I just scrape it off and get back to running materials.

Every time I dump the tailings bucket I top the system back off. The additional water helps to keep it so the pumps aren't trying to move mud.

PLEASE tell us that wasn't the ONLY piece ya found in that bucket Tweeta!

 

[tweeta_bear]

well it wasnt really a full five gallon bucket. no i found a few more smaller pieces. oh ive only been doing this for less than a yr steady.

 

[JohnnyFlake]

I am pretty sure that your slope is not high enough. I believe your slope should be at about 2" for every 12" the sluice is, in length.

 

[wild eyed willey]

slow your water pressure down until the V closes short of the black mat. you can then increase or decrease your angle until your riffles hold just heavies and spread out across.

 

[425jesse]

So in conclusion, higher slope and lower flow? I have an A52 a friend gave me, and want to use it as a recirc too. My pump is a sump pump that runs 3000 gph, sounds like I should build in a valve to attenuate the flow.

 

[team sidewinder]

well it wasnt really a full five gallon bucket. no i found a few more smaller pieces. oh ive only been doing this for less than a yr steady.

Well there you go. You must be doing it right, whatever you are doing. Good job

 

[goldenIrishman]

So in conclusion, higher slope and lower flow? I have an A52 a friend gave me, and want to use it as a recirc too. My pump is a sump pump that runs 3000 gph, sounds like I should build in a valve to attenuate the flow.

LOL With 3000 GPH you could ALMOST run that thing flat Jesse! A valve would be a very good idea but like I told Tweeta, experiment with different flows and angles to find what works best for you. Everything in the sluice plays a part in how you have to have it adjusted for best recovery. Change one thing and the entire setup can change. Simply going from Flat to Hungarian style riffles will make a huge difference in how much water you need going through the box.

 

[B H Prospector]

Hi tweeta,
After looking at your video and pictures what I think is building in front of the riffles is magnatite and hematite. That is natural. The build up isn't excessive. By the looks of the video you have it set perfect. 1" per foot drop is correct for a controled setup. On a creek you would have to fiddle with settings. Your material should clear the black mat in 15 to 30 seconds. If faster than that flow is too fast, if longer flow is too slow. Same applies on the creek only then drop may come into play as creeks aren't a controled setting.

Good Luck!

BH Prospector