collapse

Author Topic: Screen Sizes (Pulsator and Trommel)  (Read 2778 times)

drdjw

  • ALF'er Bronze Member
  • *
  • Posts: 20
  • Mad keen sapphire hunter!
Screen Sizes (Pulsator and Trommel)
« on: November 17, 2014, 01:26:49 PM »
G'day Guys,

Hope everyone is keeping cool in this weather! hotthirsty

I'm building a trommel and pulsator at the moment and was hoping that you guys may be able to share some advice about aperture/hole sizes for mesh.

The trommel has three sections:
     1. A fine mesh to remove dirt from the wash;
     2. A larger mesh to allow the smaller size fraction through to that pulsator; and
     3. A larger mesh again to allow the larger size fraction of the wash through into the second pulsator.

I've got two pulsators operating to help the separation process, as sapphires separate better in a pulsating bed of similar sized stones.

My guess for the screens are:
     1. 2mm opening (use this same size in the bed of the pulsators),
     2. 10mm opening,
     3. 25mm opening.

What are people's thoughts on these sizes?

Cheers,
Dylan

Bluey Zarzoff

  • ALF'er VIP
  • *
  • Posts: 676
  • Experience you get - just after you needed it
Re: Screen Sizes (Pulsator and Trommel)
« Reply #1 on: November 18, 2014, 09:03:18 AM »
Sounds about right to me. You may even be able to go a bit bigger with the 25mm if you wish. Maybe 35mm.
I started out with nothing
And still have most of it left.

-----------------------------------
Women will never be equal to men until they can walk down the street with a bald head and a beer gut, and still think they are sexy.

Andrew

  • ALF'er VIP
  • *
  • Posts: 677
Re: Screen Sizes (Pulsator and Trommel)
« Reply #2 on: November 18, 2014, 07:24:52 PM »

 We only ever used two Mesh sizes but we did not ever get Massive Sapphire,Mostly Bombs you get in QLD.
 I would suggest 2mm is way to small for your small size as it will just get Blocked up,2mm can work in a Pulsator as the Water action keeps it Clear but in a Trommel anything under 5mm will just cause Havoc.
 Thats my experience but from a different Field   hotthirsty   

drdjw

  • ALF'er Bronze Member
  • *
  • Posts: 20
  • Mad keen sapphire hunter!
Re: Screen Sizes (Pulsator and Trommel)
« Reply #3 on: November 18, 2014, 08:08:27 PM »
Thanks Guys! I'll look into adding both of your recommendations to my design.
 beers

Tags:
 

Recent Activities

Pewter Lap build by Bucket
[Today at 05:35:03 PM]


honey opal by dan1000
[August 02, 2021, 11:22:11 PM]


Opal doublet backing. by MakkyBrown
[August 02, 2021, 08:13:51 AM]


faceting machine digital microscope setup by Faceting Frank
[August 01, 2021, 12:28:09 PM]


Joke of the Day by pc bowe
[July 31, 2021, 07:47:35 AM]


Bevelled sides, flat top Cabochon by FlashGP
[July 30, 2021, 07:39:56 PM]


MB Faceting Machine Build by MakkyBrown
[July 26, 2021, 02:32:16 PM]


Bert Smit faceting machinery by RoughCreations
[July 24, 2021, 02:08:35 PM]


Facetron Encoder Mod Thread by RoughCreations
[July 14, 2021, 01:28:45 PM]


Advice on gemology course by FlashGP
[July 12, 2021, 02:27:09 PM]


Opal Identification help by AZ
[July 04, 2021, 09:37:58 AM]


Faceted stone design software by FlashGP
[June 27, 2021, 04:31:11 PM]


Can anyone help? Double terminated dog tooth sapphire by Tonyuk
[June 26, 2021, 04:49:22 PM]


Back from Agate Ck by Jimnyjerry
[June 26, 2021, 09:51:32 AM]


Flint by Rusted
[June 26, 2021, 06:28:29 AM]