wave table question
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Thread: wave table question

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  1. #1

    Jul 2013
    6
    3 times
    All Types Of Treasure Hunting

    wave table question

    First post, so be gentle. I am building a miller or wave table. my first was a aluminum table with black chalkboard paint. I used a simple small pond pump. Results were good but I wanted to do a little better job on the metal work. I also wanted to build one with a black magic type mat, so it would be easier to add a collection vial. All went well with one exception. I seem to struggle with the water flow the mat seems to tend to cause the water to separate from the sides and flow down the middle more or less. Lowering the slope causes it to spread out, but hampers the movement of the sands, so it takes a lot of work to get the material to move down. I am thinking of options. Maybe a high volume pump would help, and add a valve for fine adjustment, then I might be able to increase flow and slope to the right amounts. Any and all suggestions are welcome.
    alaskaseeker likes this.

  2. #2
    us
    Aug 2004
    Olympia WA
    Minelab Xterra 70, Minelab SD 2200d, 2.5", 3", 4"and several Keene 5" production dredges, Knelson Centrifuge, Gold screw automatic panner
    857
    1868 times
    Prospecting
    Can you post pics of what you have already built?
    Increasing the water flow will help and you can try adding some sort of damper. Some people use a mat to smooth and spread the water over the entire surface but I find bristles work better
    russau likes this.

  3. #3

    Jul 2013
    6
    3 times
    All Types Of Treasure Hunting
    I will try and get pics up tomorrow. I have miner's moss under the spray bar, and the duct brand matting.
    Rosey Morgan likes this.

  4. #4

    May 2012
    899
    511 times
    All Types Of Treasure Hunting

  5. #5

    Feb 2004
    Colorado
    GS5 X-5 GMT
    1,268
    169 times
    Quote Originally Posted by Robo57 View Post
    First post, so be gentle. I am building a miller or wave table. my first was a aluminum table with black chalkboard paint. I used a simple small pond pump. Results were good but I wanted to do a little better job on the metal work. I also wanted to build one with a black magic type mat, so it would be easier to add a collection vial. All went well with one exception. I seem to struggle with the water flow the mat seems to tend to cause the water to separate from the sides and flow down the middle more or less. Lowering the slope causes it to spread out, but hampers the movement of the sands, so it takes a lot of work to get the material to move down. I am thinking of options. Maybe a high volume pump would help, and add a valve for fine adjustment, then I might be able to increase flow and slope to the right amounts. Any and all suggestions are welcome.
    Hi Robo57

    It is good that you are building your own equipment. The idea that you need diffuse water flow for best operation is a good one.
    I encountered the same problem when I was building my small wave table. I would think that miner's moss would have too coarse
    openings. You might try a finer mat(smaller openings).

    By the way- A miller table and a wave table are very different devices. A wave table uses mechanical action to produce standing waves and sorts material by specific gravity. Contary to miller tables- size and weight of particles-hydraulic equivalence does not apply for wave tables- just specific gravity. I will post a video of my small wave table when I get some vacation time from work.

    George

  6. #6

    Jul 2013
    6
    3 times
    All Types Of Treasure Hunting
    Thanks for the reply. I guess you are right I should have said water table. I would love to see video of the wave table. I tried a larger pump his evening, and can up then flow, but it starts to cause foaming with the jet dry. I will try lighter smaller matting under the spray bar. I saw where azviper said to use a specific valve not a ball valve. where do you get that valve, and what mat do you suggest.

  7. #7

    Feb 2004
    Colorado
    GS5 X-5 GMT
    1,268
    169 times
    A needle type valve commonly found at Home Depot will give you a more precise flow than a ball valve. Any type sponge material will work as a mat such as you can find in the cleaning section of WalMart. I use blue furnace filter but my flow requirements may be different than yours.

    George

  8. #8

    Jul 2013
    6
    3 times
    All Types Of Treasure Hunting
    https://www.dropbox.com/s/8kh7eqnijk...071214_028.mp4
    Quote Originally Posted by bakergeol View Post
    A needle type valve commonly found at Home Depot will give you a more precise flow than a ball valve. Any type sponge material will work as a mat such as you can find in the cleaning section of WalMart. I use blue furnace filter but my flow requirements may be different than yours.

    George
    Here is a video showing the table

    https://www.dropbox.com/s/8kh7eqnijk...071214_028.mp4

    Hope this helps clear up the issues. This was shot before adding the larger pump. The angle of the fall I very light, and not enough to ash off the sand even blonds. Adding the bigger pump caused foaming issues. I will change out the flow matting under the spray bar , and add a needle valve and re test. I will try to shoot another video showing the flow issue specifically.
    Last edited by Robo57; Jun 19, 2014 at 01:25 PM.

  9. #9
    us
    Feb 2019
    Dawnzer Lee Light
    67
    31 times
    Prospecting
    Quote Originally Posted by bakergeol View Post
    Hi Robo57

    It is good that you are building your own equipment. The idea that you need diffuse water flow for best operation is a good one.
    I encountered the same problem when I was building my small wave table. I would think that miner's moss would have too coarse
    openings. You might try a finer mat(smaller openings).

    By the way- A miller table and a wave table are very different devices. A wave table uses mechanical action to produce standing waves and sorts material by specific gravity. Contary to miller tables- size and weight of particles-hydraulic equivalence does not apply for wave tables- just specific gravity. I will post a video of my small wave table when I get some vacation time from work.

    George
    Quote Originally Posted by bakergeol View Post
    George,
    are you still alive and kickin'? Miss you!
    Last edited by Rosey Morgan; Jul 25, 2019 at 09:58 AM.

  10. #10
    us
    Apr 2015
    Oshkosh, WI
    998
    1436 times
    All Types Of Treasure Hunting
    I run both Scotchbrite and humidifier belt in my miller table.

  11. #11
    us
    George

    Jun 2019
    Ak,Tn
    Minelab, Fisher
    245
    458 times
    Prospecting
    My thoughts on this, most miners take their cons to a shop that specialize in gold recovery from black sands, this is a time consuming process and time is money.
    Rosey Morgan and gold tramp like this.

  12. #12
    us
    Feb 2019
    Dawnzer Lee Light
    67
    31 times
    Prospecting
    Quote Originally Posted by alaskaseeker View Post
    My thoughts on this, most miners take their cons to a shop that specialize in gold recovery from black sands, this is a time consuming process and time is money.
    Do these shops advertise? Can you drop some names? I only knew of one in Wasilla Alaska, and it went broke and closed after a couple years. Has someone else started up one up there in AK and is making a go of it?


    Thanks.
    Last edited by Rosey Morgan; Jul 25, 2019 at 09:37 AM.

  13. #13
    us
    Gold Tramp

    Dec 2012
    1,027
    1939 times
    I do this type mill work.
    Black sands, crush ore, table work.
    I also do field assay work,
    BB mining co, Dale mining district.
    Twentynine palms.Ca.
    Gt......
    Last edited by gold tramp; Jul 26, 2019 at 07:16 AM.
    Rosey Morgan likes this.

 

 

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