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Post  Jack outwest on Tue Mar 26, 2013 3:19 pm

Anyone know of a pan that allows all the lighter stuff to be removed with one quick movement so the back washing can start ?

How about this one ?
Morgans Pan 1982 patent ...

Easy Pan wanted Morganspan_zps74ab383e

A gold pan with an 'airlock' in the floor.
The inventor asserts that in a normal pan "gold settles in the first few swirls of slurry" and seeks to recover the gold immediately from below in a manner that eliminates the time and labour of panning away the lights.
The innovation consists of riffle like slots that trap the gold in the otherwise flat floor of the gold pan. Once accomplished, the panner then pulls a long lever that causes a shutter to shut off the slots and their content of gold in the 'airlock'. To retrieve the gold, the panner pulls a smaller lever sited beneath the pan that opens the base of the airlock allowing its contents to fall into either a bucket or an attached transparent inspection jar.


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Post  someday on Tue Mar 26, 2013 3:40 pm

There's been some quite clever ideas over the years, theoretically anyway!
Black sand, which I reckon is a good thing cause it keeps the gold out of harms way, will be their downfall!
Depends what the area's like, not much black sand, maybe they'd work ok, otherwise there little reservoirs will just become chockers with the stuff !!

I can't back that up, but it looks pretty obvious.
I'm sowwy Q41 Q18
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Post  Guest on Tue Mar 26, 2013 3:43 pm

Jack mate i would stick with the Garret range of pans. There about as good as you will get try and stay away from them flash looking pans. cheers mate

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Post  Guest on Tue Mar 26, 2013 4:04 pm

Jack check this PDF file out. cheers

Panning

by R Grayson - 2006
World Placer Journal – 2006, Volume 6, pages 1-21. www.mine.mn. 1. Gold recovery in gold pans. - the term 'panning'. Robin Grayson.

http://goldrushgang.com/gold-pans.pdf

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Post  Jack outwest on Tue Mar 26, 2013 5:16 pm

Thanks for the replys
Someday I can see what you mean about the amount of black sand over filling the trap , there may be a simple way to overcome that problem , I'm pretty simple so I'll have a think Very Happy

Whiskers - great link ! will need to study it in full , I notice the 15" Garret pan is under $10US in the States but that triple here Crying or Very sad
must be postage cost ? Wink

We need to invent the Aussie Pan for lazy barsteds like me cheers

Jack .
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Post  Guest on Tue Mar 26, 2013 8:06 pm

Mate keep in mind a lot of fancy pans work best on one type of material only there not all-rounders. And that can cause you a lot of trouble if caught out. Just my thought's on the subject mate cheers

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Post  Jack outwest on Tue Mar 26, 2013 8:42 pm

You know what you’re talking about Whiskers , I've read enough of your posts to know that cheers

Do you agree there is a missing device that’s needed to easily hand concentrate unclassified material down to the heavies so panning is done at the last stage , I've looked at whats available , none do it !

Regards
Jack .
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Post  Guest on Tue Mar 26, 2013 9:20 pm

It's called a Banjo!!! Greatest device for concentrating unclassified material down to cons.

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Post  Jack outwest on Tue Mar 26, 2013 9:54 pm

Never seen a hand powered banjo that will do It Ark , maybe you can show one please ?

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Post  Guest on Tue Mar 26, 2013 9:59 pm

Ahhh who mentioned hand power ! original BANJOS were used to concentrate tin and were hand operated !!! I'm sure James will be able to get a sketch or a description !

Oops just read you post again lol! My mistake ,,,,hand operated indeed !

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Post  Jack outwest on Wed Mar 27, 2013 2:55 am

No worries Ark , bet you would like one also Laughing

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Post  Guest on Wed Mar 27, 2013 7:15 am

Black Sands and separation ….. Now that is a hard one, people from day dot have been trying all types of ideas for it’s separation from gold. Let’s look at black sands first that word black sand meaning the presence of heavy mineralization.
The trouble in trying to make a separator to reduce the amount of black sand is in Australia there are 3 types of black sand which you will encounter the first been the magnetic black sand, the second is Tin which is mistaken for black sand in some areas and last but not least and the worst kind of black sand so called at times is black corundum. Now Tin is just that bit heavier than the magnetic sand and the black corundum is the heavier of them all.
To my way of thinking it is much better to reduce the amount of concentrate you have at clean up time. It is far better to get 3 gram from half a pan of concentrate, than getting the same 3 gram from a 20 litre bucket full of concentrate. As Ark said the Banjo’s do this very well indeed. For what we do it is most important for a prospector to learn the art of backwashing with the pan.
This is how I do a backwash first I have a little over a cup full of water in my pan, I run the water around the rim of the pan in both directions so it will clap or meet over the centre of my concentrate. I then tilt the pan so the water runs back to me bringing some of the black sand with it. This process is repeated till only gold is left. When you first start using this backwash style it will be very slow but as you become accustom to it’s use you become very quick at the separation. And you will say to yourself thank god I did not wast my money on them so called separators.
The small scale prospecting we do I find the pan the best type of separator, but if I was running a mine well then that is a very different yarn indeed. That’s the way I look at the whole affair keeping it simple, light & compact in style and gear.
Smile the original Banjo was dug into a back by the old timers where they would wash the dirt by throwing a pan of water onto it making the wash run up then back down over a Riffle then out. From there it progressed to what they called a Queensland wet Jig which is what the units we use today are based on. As I said these are just my thoughts I may be wrong. Good line of post thanks for posting I have enjoyed the discussion. In answer to your question, I feel we can’t go past the good old pan.
Cheers mate
James. 101
cheers
The Queensland wet Jig

Easy Pan wanted Wetjig



© J.B 2013

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Post  Guest on Wed Mar 27, 2013 9:13 am

Jack outwest wrote: You know what you’re talking about Whiskers , I've read enough of your posts to know that cheers

Do you agree there is a missing device that’s needed to easily hand concentrate unclassified material down to the heavies so panning is done at the last stage , I've looked at whats available , none do it !

Regards
Jack .


hi Jack, I have a pyramid pro pan it seems to do this, check it out on u-tube. albino

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Post  Guest on Wed Mar 27, 2013 9:27 am

All the info you need to know mate is in these links cheers.

Wilfley shaking tables – 1890s research in Colorado
http://www.mine.mn/Robin_Grayson_gold_recovery_method18.pdf

shaking tables – 1960s-1970s research in China.
http://www.mine.mn/Robin_Grayson_gold_recovery_method19.pdf

shaking tables – 1960s research in USSR.
http://www.mine.mn/Robin_Grayson_gold_recovery_method20.pdf

BGS shaking table – 1990s research in UK
http://www.mine.mn/Robin_Grayson_gold_recovery_method63.pdf

Gemeni table – 1980s research in Colorado.
http://www.mine.mn/Robin_Grayson_gold_recovery_method53.pdf

U-Tech reverse polarity table – 1990s research in Arizona.
http://www.mine.mn/Robin_Grayson_gold_recovery_method65.pdf

Goltron machine – 1990s research in Utah.
http://www.mine.mn/Robin_Grayson_gold_recovery_method64.pdf

Bartles-Mozley orbital tables – 1970s research in Cornwall.
http://www.mine.mn/Robin_Grayson_gold_recovery_method29.pdf

Pinched sluices

pinched sluice – historical usage.
http://www.mine.mn/Robin_Grayson_gold_recovery_method21.pdf

Reichert cone – 1960s research in Australia.
http://www.mine.mn/Robin_Grayson_gold_recovery_method22.pdf

Gold spirals

Humphrey spirals – 1940s research in Colorado.
http://www.mine.mn/Robin_Grayson_gold_recovery_method23.pdf

Mark-7 Reichert spirals – 1980s research in USA.
http://www.mine.mn/Robin_Grayson_gold_recovery_method54.pdf

Elutriated sludge tanks

Duke E-tank – 1970s research in Georgia.
http://www.mine.mn/Robin_Grayson_gold_recovery_method25.pdf

Graefe E-tank (Keene Hydromatic Jig) – 1980s research in California.
http://www.mine.mn/Robin_Grayson_gold_recovery_method41.pdf

Pyramid E-tank (Pyramid Jig) – 1990s research in California.
http://www.mine.mn/Robin_Grayson_gold_recovery_method59.pdf

Elutriation towers

Lashley ASAT Elutriation tower – 1980s research in New Mexico.
http://www.mine.mn/Robin_Grayson_gold_recovery_method43.pdf

Osterberg E-tower (Quick Gold Separator) – 1980s research in California.
http://www.mine.mn/Robin_Grayson_gold_recovery_method44.pdf

reflux classifier – 2000s research in Australia.
http://www.mine.mn/Robin_Grayson_gold_recovery_method73.pdf

Compound water cyclones

Visman Compound Water Cyclone (CWC) – 1970s research in Yukon.
http://www.mine.mn/Robin_Grayson_gold_recovery_method26.pdf


Vibrating belts (vanners)

Bartles crossbelt – 1970s research in Cornwall.
http://www.mine.mn/Robin_Grayson_gold_recovery_method28.pdf

Lemmon vanner – 1980s research in the Yukon.
http://www.mine.mn/Robin_Grayson_gold_recovery_method51.pdf

Methods for the recovery of fine gold

The aim of this review is to recommend methods for the recovery of fine gold.
http://nora.nerc.ac.uk/9014/1/A_review_of_gold_particle_size_and_recovery_methods_WC-97-014.pdf

separation methods are confused with size classification because large particles
http://www.artisanalmining.org/casm/sites/artisanalmining.org/files/files/Pg34-52Ch4GravityConcentration.pdf

improvements to gravity recovery methods
http://www.gekkos.com/documents/025MaximizingGravityRecoveryThroughTheApplicationOfMultipleGravityDevices.pdf

effective method of recovering gold as fine as 150 mesh ...
http://www.hecklerfabrication.com/files/fine_gold_recovery_sluiceboxes__Poling.pdf

Gold recovery by KC from grinding circuit of Bergama CIP plant
http://www.scielo.br/pdf/rem/v63n3/v63n3a17.pdf

robust device able to recover very fine gold without mercury. 
http://www.iconcentrator.com/images/stories/pdf/centrifuges-modified-iCON-2-opt.pdf

Placer Gold Recovery Methods, Special Publication 87. California 
http://www.knelson.ru/sites/knelsongravity/files/reports/report10s.pdf


Recovery of gold fines from gold-bearing ores 
http://www.google.com/patents/US5927508

 recovering fine gold and flat gold
http://www.mine.mn/WPJ6_2_Soviet_lotok.pdf

Clarkson Study Fine Gold Recovery
http://www.scribd.com/doc/61880538/The-Clarkson-Study-Fine-Gold-Recovery

The Right Gold Panning Equipment
http://www.free-press-release.com/pdf/download/201202/1330311771.pdf

How the Jig Works
http://mines.az.gov/Publications/circ052jig.html

Gold Revocery Equipment, Small scale mining, Information.
http://mine-engineer.com/mining/SmallMining/comparison3.htm

"Do-It-Yourself" Gold Recovery System Plans
Good site.
http://www.bedrockdreams.com/2008/10/do-it-yourself-gold-recovery-systems.html

Highbanker
http://www.free-press-release.com/pdf/download/201202/1330310858.pdf

There are two primary commercial methods of recovering gold and silver
http://www.azgs.az.gov/Mineral%20Scans/Au%20&%20Ag%20Extraction.pdf

Alaska Mineral Industry Research Laboratory Reports
http://www.dggs.dnr.state.ak.us/pubs/series/mirl/report

leaching applications
http://www.altamet.com.au/Technical%20Papers%20and%20Articles/ALTA%20Gold/ALTA%20Gold%20Technology%20Developments%20&%20Trends.pdf

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Post  Guest on Wed Mar 27, 2013 9:32 am

Brilliant information there James !!! cheers

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Post  someday on Wed Mar 27, 2013 9:37 am

The best invention you could come up with would be a 1 litre container that holds a 1000 litre's of water!
I'l be your first customer cheers

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Post  Guest on Wed Mar 27, 2013 9:43 am

Q25 good one Q25

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Post  Jack outwest on Wed Mar 27, 2013 3:30 pm

Thanks again James for the treasure trove of links & information , it will take some time to wade through , I may find what I’m looking for .
Agree the humble pan is still king Very Happy

Hi Sparrowfart , do you find the trap on the pyramid pan too deep to allow enough displacement to happen ?

Hey Someday ' your a funny bugger Q40

Cheers
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Post  Guest on Fri Mar 29, 2013 12:09 pm

Jack outwest wrote:Thanks again James for the treasure trove of links & information , it will take some time to wade through , I may find what I’m looking for .
Agree the humble pan is still king Very Happy

Hi Sparrowfart , do you find the trap on the pyramid pan too deep to allow enough displacement to happen ?

Hey Someday ' your a funny bugger Q40

Cheers
Jack .

Hi Jack, I see what you mean and had some reservations about that too, but have not found it to be a problem in reality. I use the thing like a regular gold pan and so far so good. That is I shake it side to side as you are supposed to then "slosh" the material out the top of the pan in the usual manner. Likely it's not perfect but sure seemed to work for me. I find I use it when I can as it is fast and easy and somewhat more forgiving than a regular pan. Having said that I'd never leave my Garrets at home! It works and it definitely has a place. albino

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Post  Jack outwest on Fri Mar 29, 2013 9:30 pm

Thanks for your answer Sparrowfart , I’ve never understood why it’s called a pan as you need to use a pan to proses the end product .
Also it requires sifted clean material as per the inventers video .

I’m being more pragmatic then critical of this design , wish there was some independent tests by experts like James on new equipment that we could read to cut through to the strengths & weaknesses . study

Imagine a hand operated concentrator that can do the following :--
Treat unclassified material down to a small volume quickly with little physical effort required , work both wet & dry with high efficiency .
Able to re-run the concentrate easily to a super concentrate again ‘ including getting rid of most Magnetite / Hematite black sands .

Cheers
Jack
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Post  Guest on Fri Mar 29, 2013 11:20 pm

Jack outwest wrote:Thanks for your answer Sparrowfart , I’ve never understood why it’s called a pan as you need to use a pan to proses the end product .
Also it requires sifted clean material as per the inventers video .

I’m being more pragmatic then critical of this design , wish there was some independent tests by experts like James on new equipment that we could read to cut through to the strengths & weaknesses . study

Imagine a hand operated concentrator that can do the following :--
Treat unclassified material down to a small volume quickly with little physical effort required , work both wet & dry with high efficiency .
Able to re-run the concentrate easily to a super concentrate again ‘ including getting rid of most Magnetite / Hematite black sands .

Cheers
Jack


HI Jack, you have got the wrong idea re the sifted material. it handles unclassified material, I toss in everything rocks and all. the aluminum scrapers are to clean the rocks before you toss them. There are other vids on u-tube check them. can't help you with the wish list, other than to wish along with you. Wink

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Post  Jack outwest on Fri Mar 29, 2013 11:33 pm


What ! Shocked you need to reach in the thing to toss out the rocks affraid


Last edited by Jack outwest on Fri Mar 29, 2013 11:34 pm; edited 1 time in total (Reason for editing : quote)
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Post  Guest on Sat Mar 30, 2013 10:50 am

Yep fraid so, if they are too big to swish out you pull'em out by hand!!! True true nothing in this life is perfect. Laughing

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Post  Jack outwest on Sat Mar 30, 2013 2:32 pm

Good luck with it S/F , as long as your happy alls well Q27

Cheers
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Post  Guest on Sat Mar 30, 2013 9:19 pm

Jack outwest wrote:Good luck with it S/F , as long as your happy alls well Q27

Cheers
Jack .


Very Happy Very Happy Very Happy

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