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#1

ben2363
Member
Joined: 05 April 2016
Posts: 154
Member
29 November 2019 08:25 am

Hi all.
So i have about 500kg of rock i want to crush up.
Issue is what screen size do i go as the gold in the rock is all over the place some of the gold is visible by eye some is micron size.

Do i just run it twice one with a bigger 2mm or 3mm screen then sluice it to get the bigger gold out the re run the tailing with a small screen like a half mm or a mm??

Cheers
Ben

1 user likes this post: RM Outback

#2

RM Outback
Member
Joined: 10 March 2016
Posts: 4,534
Member
29 November 2019 11:37 am

I can't help but I'd love to have your problem big_smile half a tone, nice perfect beer

#3

jethro
Member
From: North East , VIC
Joined: 06 September 2013
Posts: 575
Member
29 November 2019 07:02 pm

I crush initially down to pass a quarter inch screen in my chain mill. this will give me about a 40% by volume pass through a 120 mesh screen straight after the outlet . The oversize then gets processed through a rod mill with a 120mesh outlet screen. 120 is as fine as I would go for gravity seperation. Half a ton is probably going to take a day or 2 and a set of chains to process. Pls use a resperator /mask if you are crushing dry.

#4

ben2363
Member
Joined: 05 April 2016
Posts: 154
Member
29 November 2019 07:06 pm

Okay sweet ill give a quarter inch a goa

#5

jethro
Member
From: North East , VIC
Joined: 06 September 2013
Posts: 575
Member
29 November 2019 07:30 pm

Are you using a wire mesh screen or a plate with holes drilled in it? If using a plate you may be able to go down to 4mm without too much blockage. I use mesh but its in a side discharge setup that recirculates anything that doesnt have a chance to pass the mesh screen back into the chamber for more smackage. smile

#6

ben2363
Member
Joined: 05 April 2016
Posts: 154
Member
29 November 2019 10:08 pm

It will be a wire mesh

Last edited by ben2363 (29 November 2019 10:08 pm)


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