CONVERTING G/T to G/ Cubic Meter - Gravity Separation & Concentration Methods - Metallurgist & Mineral Processing Engineer

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CONVERTING G/T to G/ Cubic Meter (4 replies and 3 comments)

7 years ago

GhanaBob 7 years ago

Hi All,

I just received our sample tests back by SGS and I need some help in understanding the fire assay weights measured in Grams/Ton and backing that into what we are measuring in our placer op of Grams/Cubic Meter.

Can I just divide the Ton number by 1.6, the factor I use to convert my M3 volume into tons?

Thanks for your help,

Ghana Bob

Mike Rockandel

7 years ago

Mike Rockandel 7 years ago

that is correct. say you had 1 g/t, the calc would be

1 g/t x 1.6 t/m3 = 0.625 g/m3

http://www.rockandel.com/

GhanaBob

7 years ago

got it!

Richard S

7 years ago

Richard S 7 years ago

Bob: I think that you need to multiply the grams/tonne (ppm) by the number of tonnes you have in a cubic meter. From your note above, you are using 1.6 metric tonnes in a cubic meter, so you would have 1.6 X g/tonne = grams/cubic meter.

Richard

http://www.kuntermetallurgy.com/

GhanaBob

7 years ago

appreciate your answer. thanks

Siddiquf

7 years ago

Siddiquf 7 years ago

I agree with Richard. But your use of the word 'ton' is confusing. Fire assays are reported in g/t which normally means gram of gold in 1 tonne (which is precisely 1000 kg). Now 1 cubic m of your ore weighs 1.6 tonne. So if reported value is, let us say, 2 g/t, gold content of a cubic m will be 2 x 1.6, that is 3.2 g/cubic m.

Avoid the use of the imprecise unit 'ton'. Hope it helps.

GhanaBob

7 years ago

THANKS, it does help
.

Silkridge

7 years ago

Silkridge 7 years ago

If your bulk density is 1.6 tonnes/cubic metre it is the correct factor otherwise you need to determine what your bulk density is.

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