Knocker Sluice

[AtomRat]

My mates been having a play here and there making brackets and all sorts playing with his 12v windscreen motor. Hes been through vibration tables to trommels with his projects and thought I'd capture this mod in action.

The speed could be geared up, but because we sealed the wires we couldn't change this down the creek. As you can see its very prototype and just testing how we can mess with a sluice and keep it compact / light.

[video=480,360]https://www.youtube.com/watch?v=Z6p96mwSLj4[/video]

 

[Bazz]

What a ball biter!!!

Thanks for the share

 

[AtomRat]

What a ball biter!!!

Thanks for the share

Hahaha ..yeah..its a no go for fingers device at the moment.. 8) .. lots of torque in them motors! It kept very cold during the 2 hour use and could run all day no problems. Great motors

I said : "Why don't you put the motor under the sluice so its all out the way..?"

My mate: "Naaaaarrrrrr..."

 

[AtomRat]

Its actually only snapping soo hard as well because were using an okky strap to hold tension to make it flick, otherwise the drop action was too soft

 

[kawman]

excellent..

 

[Chewy]

Nice job AR.

 

[AtomRat]

Not me..my mates idea and project, just thought I'd share his playing about :lol:
Was fun to say hello to the creek again though. I miss its stagnent smell.. :/

 

[Bazz]

I got an old pair of socks that smell the same

 

[AtomRat]

Trust me Bazz..your socks are probably better. I dug up a piece of deer hoof and nearly spewed when the shovel broke through the leaf matter and floating orange algae and potassium froth

 

[Bazz]

OK!! You win 8.(

Way too much information while I'm cooking dinner

Thanks for the share!.......NOT!

 

[Guest]

Interesting topic thanks for posting I would like to get your thoughts on how vibration effects fine gold retention in compacted blacks. I use the word blacks in regards to black sand there are a few different kinds in Australia {Magnetite, chromite, ilmenite which is mostly grey, tin, corundum and others }. They all act a little different but end up pretty much the same. In my mind I can see that excessive compaction could result in gold loss. Due to the finer gold not been able to settle into the compacted blacks and been blown over the top and out of the unit. I am basing this statement on how fine gold penetrates the blacks when I am panning down at clean-up time. Below are a few shots of different types of blacks in the pans I have had, they look very much the same but you will notice the difference when trying to separate the blacks from the gold.

Ironstone

Corundum

Corundum & Tin

Tin

Magnetite

These are just my thoughts.

 

[G0lddigg@]

My mates been having a play here and there making brackets and all sorts playing with his 12v windscreen motor. Hes been through vibration tables to trommels with his projects and thought I'd capture this mod in action.

The speed could be geared up, but because we sealed the wires we couldn't change this down the creek. As you can see its very prototype and just testing how we can mess with a sluice and keep it compact / light.

https://www.prospectingaustralia.com/forum/img/member-images/3111/1448255066_14482549673030.jpg
https://www.prospectingaustralia.com/forum/img/member-images/3111/1448255091_14482549781411.jpg

[video=480,360]https://www.youtube.com/watch?v=Z6p96mwSLj4[/video]

Well that is an interesting way to do it mate. Ive experimented with similar ideas in the past and found that knocking grizzlies up achieved the best hands off processing. This is very cool indeed i imagine a few issues with grass and buildup of junk but good fun all the same

 

[AtomRat]

Jemba - being my mates project and not mine.. I too have theories on it. I know from panning heavies like we have here, mostly tin and magnetite the gold struggles to sink and sits freely within the black sands. This is why I have tubs and tubs of un refined concentrates until I build a shaker table which I feel is the best way to sort it.

Personally, my sluice designs try to prevrnt it. I'm running out of batt and will respond shortly with more ingo.

Golddigga - supprisingly.. the best thing on thus classifier was it handles grass..leaf..etc perfectly. Like I mean perfect and it slides straight over the mesh. Don't ask me how ..just one of those things. I even tried to force clog it but the bigger rocks were the only thing that caused problems. Remarkable

 

[Bazz]

Hey Jemba

Thanks for the post, I really do appreciate the time and effort that is put into sharing yours and others knowledge and experience

As for the pans, if I saw that much in gold in one of my pans the only black I'd be concerned with is "BLACK OUT" 8)

Thanks again

Bazz

 

[Guest]

Hi guys back in the late 80s early 90s Minersden had a banker which operated on water power vibration it never was all that good so they say. But sitting back thinking about the unit in question I started to wonder, its a good topic to kick the can around on.

Bazz digger mate over the years i had some really good shows, stuff that would blow your mind. cheers J.

 

[cecc]

Little beauty.

 

[yobskin]

I have noticed with my rocker box the super fine gold sits alot higher up than my sluice...and if i rock it without feeding more material the black sand moves down the box but not the gold.

 

[Guest]

Interesting indeed, but I cant make comment having never used a rocker box. But I would love to see it in action. Cheers digger

 

[AtomRat]

Most vribrations move gold back up the sluice is what I've found. If you have an extension on your sluice you need to make sure there is no gap at the join where the sluices overlap. If there is a gap like a mini waterfall, big chances are that you will loose gold through the gap as rocks tumble down unless its sealed. I think a whole sluice can be buikt off this waterfall-gap and put to advantage.

Havnt used or seen a rocker sluice in action yet..only display. Should make one for myself. Interesting that it breaks away black sands yobskin.

Feel free to mention the vribration sluice a bit more Jemba, sounds interesting.

The way my mate designed his knocker sluice is a seperate tray that bumps up and down completely seperate from his sluice under all the mechanical stuffs. So the main sluuce never took much of a rattle / vibration as it came down

 

[Guest]

Hi mate the Miners den banker to which I made reference to, used an offset wheel under the bottom hopper driven by a water jet. They are a few around still today but not many. We played around with the idea back in 2000 but really it was a waste of time the gain was not noticeable and the extra clean up not worth it. Your quite right in what you say about a sluice extension if they dont fit right there is a very strong chance that a vortex will be created at the point where the two meet drawing back the fines at that point. If I was your mate I would play around with double punch plates and hopper angle as well, he will be surprised at just how good they work depending on the wash been worked clay will stich them up real quick. The items discussed in this line of post was the driving force for the hydraulic jump in my banker to contain the cavitation. Cheers J.