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Thread: Recovery Rates based on different minerals

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  1. #1
    us
    Jan 2016
    14
    3 times
    Prospecting

    Recovery Rates based on different minerals

    Hi all,

    I am wondering if someone can tell me what are expected recovery rates of gold based on the other minerals in the concentrate. I am an engineer working on research in this field, and I would greatly appreciate any responses! To be more specific, what I am asking is:

    What would be an average recovery rate of gold if a given concentrate was a mixture of gold and black sand? What about if it was gold and gangue?

    What I am working on is trying to derive a formula for recovery rates based on the specific gravity differential of the minerals being processed. I am not looking for perfect numbers or anything exact, but anecdotally what you guys expect for recovery percentages (I also know these percentages will differ from machine to machine). Thank you so much for reading and responding!!

  2. #2
    us
    Feb 2018
    Western Massachusetts
    49
    64 times
    Prospecting
    Depends on where you are and how experienced you are I think.

    I don't think you can pit it in an equation really.

    Sorry for being absolutely no help. :-)
    et1955 likes this.

  3. #3
    us
    May 2010
    Goldbug Pro , Equinox 800
    222
    293 times
    All Types Of Treasure Hunting
    If I am understanding what you are asking correctly I dont think there is really any way to formulate that . For one thing not all black sands are equal there are a few different types of heavy black sands , also every spot is going to be a different percentage of gold vs black sands so there is just no way to determine that. Sorry if I am misunderstanding the question. Maybe someone else like clay diggins will chime in with more experience on a scientific level.
    Good Luck
    et1955 and winners58 like this.

  4. #4
    us
    May 2009
    Sailor Flat, Ca.
    SDC2300, Gold Bug 2 Burlap, fish oil, ACME handbook for TRUE prospectors (unread)
    5,329
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    Banner Finds (1)
    25 or 6 -2 -4

  5. #5
    Make America Great Again

    Apr 2013
    Oregon
    1,619
    3713 times
    All Types Of Treasure Hunting
    unknown without an assay, or known amount per volume. even then the recovery rates of the PPM
    would have to be based on method, gravity separation of free mill gold could be as high as 98%,
    this gives how river run gravels are calculated; https://pubs.usgs.gov/bul/1312i/report.pdf
    gold ore that is processed and extracted by other methods can be as low as 30-40%
    https://www.911metallurgist.com/blog...old-extraction
    if you are asking for process and plant controls might look at this paper;
    https://www.researchgate.net/publica...and_Processing

    could be I don't understand the question.



    FYI - 1 PPM of 2000lb = 1 gram
    Last edited by winners58; Dec 04, 2018 at 11:44 PM.
    " A pessimist is an optimist with experience "

  6. #6

    Apr 2014
    Tartarus Dorsa mountains
    1,576
    822 times
    Stayin' alive :D
    Quote Originally Posted by Goldwasher View Post
    25 or 6 -2 -4
    he he he ...
    Goldwasher likes this.
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  7. #7
    Charter Member
    us
    Tommy

    Dec 2015
    Ann Arbor
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    Yeah what they said. If I find gold the recovery rate would be un measurable,
    Still Available ​Approved TreasureNet Stickers
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  8. #8
    Charter Member

    Sep 2014
    Midwest, North of 36°60'
    3,013
    4564 times
    All Types Of Treasure Hunting
    "Recovery" how? With a sluice?

    If somebody tells me their sluice has a XX% recovery rate then I know they are a shyster trying to shaft me.

    Now, if they could tell me why their sluice lost XX% I would be all ears.
    Liberty is the Freedom to do the next Right thing.

    In God We Trust


  9. #9
    us
    May 2014
    AZ
    Sweep Jig, Whippet Dry Washer, Lobo ST, 1/2 width 2 tray Gold Cube, numerous pans, rocker box, and /home made fluid bed and stream sluices.
    1,975
    2855 times
    Prospecting
    Quote Originally Posted by seclymer View Post
    Hi all,

    I am wondering if someone can tell me what are expected recovery rates of gold based on the other minerals in the concentrate. I am an engineer working on research in this field, and I would greatly appreciate any responses! To be more specific, what I am asking is:

    What would be an average recovery rate of gold if a given concentrate was a mixture of gold and black sand? What about if it was gold and gangue?

    What I am working on is trying to derive a formula for recovery rates based on the specific gravity differential of the minerals being processed. I am not looking for perfect numbers or anything exact, but anecdotally what you guys expect for recovery percentages (I also know these percentages will differ from machine to machine). Thank you so much for reading and responding!!
    There are too many variables and unknowns to give you a definitive answer but I did find this thesis along the lines of your questions. https://open.library.ubc.ca/cIRcle/c...tems/1.0097828.

    Good luck and as I told my kids, study hard.
    winners58 and et1955 like this.
    If it can't be grown, it must be mined!

  10. #10

    Apr 2014
    Tartarus Dorsa mountains
    1,576
    822 times
    Stayin' alive :D
    Measuring the lost is always such the pickle ... if you can actually measure it then you can figure out how too not 'lost' it, AMIRITE?
    KevinInColorado likes this.
    Improving the world, one post at a time

 

 

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