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Offline parsec

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prototype fluid bed sluice
« on: October 23, 2011, 00:03 »
I am looking at getting a Bazooka Gold Trap sluice from the states, but before firing off on a $300 purchase I thought I would make up a dodgy mock up and try it out. The concept is that the sluice itself has no riffles, instead the heavies drop into a lower section and are kept in solution so that the gold/ black sand falls to the bottom, while blond sand, etc is pushed back out of the trap.

I am hoping that clean up is very quick. ie wash the trap out in a bucket (10 seconds) and also this system should not need classified material. Bottom line is I should be able to double the material I process for any given time. I will give it a test tomorrow and see how it goes.

I haven't tried it yet, but here is the URL for the real one, and here are a couple of picks of my quickly put together prototype. http://www.bazookagoldtrap.com/products.html I only had 19mm timber at home, so there is a lot of wasted space on this one, but it should work.

cheers, shaun.
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Offline Aussie Detecting

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Re: prototype fluid bed sluice
« Reply #1 on: October 23, 2011, 08:21 »
Interesting concept. Look forward to seeing the end results.
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Offline lazyaussie

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Re: prototype fluid bed sluice
« Reply #2 on: October 23, 2011, 15:30 »
as willy said interesting, i've not seen that syle before i use to make my own riffle type sluice boxs & could put a heap of wash through em.
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Offline Rwork

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Re: prototype fluid bed sluice
« Reply #3 on: October 23, 2011, 16:14 »
Trouble with any of those things is that you don't get gold out of the bottom unless you put it in the top.
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Offline parsec

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Re: prototype fluid bed sluice
« Reply #4 on: October 23, 2011, 21:34 »
Managed to get away down to the creek today and do a test, so here are some results.

First, here is a video showing me feeding it a bucket of unclassified dirt and how it copes with it:
http://www.youtube.com/watch?v=_dhYl5lIO9M

The inbuilt classifier works really well, and a bucket can be emptied into the sluice fairly quickly.

This second video shows me panning the concentrates http://www.youtube.com/watch?v=OF6waDSRWhw

What worked:
Can feed it quickly
Portable
The trap works
Cheap and easy to make
The brazing rod grizzly works brilliantly
Clean up is simple, just put it upright into a bucket and move it around
The PVC pipes in the trap work well to keep the concentrates in suspension

What needs improving:
19mm timber floats too much and takes up too much room
Remember solid timber swells across the grain when wet, so account for that.
It requires a good flow of water

Bottom line is that this system works. The light material washes straight off the sluice, > 6mm stones also washes off and heavy material gets into the trap and stays there. < 6mm stones eventually wash out of the trap leaving black sand- awesome.

I really like how it all fits together and can't wait to get the real thing. I am actually considering learning plastic and bending to make a better prototype and maybe even some improvements.

I had a goal this week to find a gram of gold, not really knowing anything about where to go in Adelaide. I didn't make it but gave it a damn good shot.

Here is the result :)

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TeeJay

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Re: prototype fluid bed sluice
« Reply #5 on: October 23, 2011, 22:28 »
Way to go parsec. Wish I had known about this device in my prospecting days. Love to see some more vids whenever you get some more :)

TeeJay

Offline Aussie Detecting

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Re: prototype fluid bed sluice
« Reply #6 on: October 23, 2011, 22:39 »
Nothing better to build it & reap the rewards. Good stuff mate.
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markoss

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Re: prototype fluid bed sluice
« Reply #7 on: October 24, 2011, 23:00 »
Managed to get away down to the creek today and do a test, so here are some results.

First, here is a video showing me feeding it a bucket of unclassified dirt and how it copes with it:
http://www.youtube.com/watch?v=_dhYl5lIO9M

The inbuilt classifier works really well, and a bucket can be emptied into the sluice fairly quickly.

This second video shows me panning the concentrates http://www.youtube.com/watch?v=OF6waDSRWhw

What worked:
Can feed it quickly
Portable
The trap works
Cheap and easy to make
The brazing rod grizzly works brilliantly
Clean up is simple, just put it upright into a bucket and move it around
The PVC pipes in the trap work well to keep the concentrates in suspension

What needs improving:
19mm timber floats too much and takes up too much room
Remember solid timber swells across the grain when wet, so account for that.
It requires a good flow of water

Bottom line is that this system works. The light material washes straight off the sluice, > 6mm stones also washes off and heavy material gets into the trap and stays there. < 6mm stones eventually wash out of the trap leaving black sand- awesome.

I really like how it all fits together and can't wait to get the real thing. I am actually considering learning plastic and bending to make a better prototype and maybe even some improvements.

I had a goal this week to find a gram of gold, not really knowing anything about where to go in Adelaide. I didn't make it but gave it a damn good shot.

Here is the result :)

Great stuff mate.

Offline 6666

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Re: prototype fluid bed sluice
« Reply #8 on: October 30, 2011, 14:01 »
You all may be interested to have a look at this thread

http://gpex.ca/smf/index.php?topic=5434.0
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torque

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Re: prototype fluid bed sluice
« Reply #9 on: November 05, 2011, 19:39 »
what is the pvc pipe inside the box used for???

Offline 6666

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Re: prototype fluid bed sluice
« Reply #10 on: November 05, 2011, 21:12 »
What the pipes do is boils the gravel in the box
to make the gold sink
  • Detector(s) owned/used: My first Whites 1975, various others
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Offline parsec

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Re: prototype fluid bed sluice
« Reply #11 on: November 06, 2011, 23:36 »
what is the pvc pipe inside the box used for???

Yeah as 6666 replied, the PVC helps force water into the material collected in the trap which helps keep the concentrates in solution. This helps separate the heavier material from the lighter stuff which can wash back out of the trap.

The sluice has 2 layers, the bottom one is designed to focus water into the trap via holes in the PVC tubes.

Hope that makes sense, cheers
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Offline 6666

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Re: prototype fluid bed sluice
« Reply #12 on: November 07, 2011, 11:47 »
Like so
  • Detector(s) owned/used: My first Whites 1975, various others
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Aint found a half penny or penny yet, Remember the best discriminator is your digging tool.

 

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