Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering

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Turbidity (1 reply)

L
Dzuge
6 years ago
Dzuge 6 years ago

What is the permissible NTU(Turbidity) for Foundry Sand?

b
Robert
6 years ago
Robert 6 years ago
Like
1 like by David

What market area are you in? Depending on the quality characteristics of nearby sand deposits and the impact of shipping cost, specifications vary within North America and globally.

See the following for discussions re sand specifications.

I see mention of 250 NTU for frac sands and occasional mention of < 100 NTU for foundry sand. However, more often the foundry sand seems to show PSD and not NTU in specifications.

 

Measurement of characteristics – including turbidity measurement

http://www.fracsandinsider.com/mmi_ConferenceDL/2013FSI/FSIThurAlan%20Bennetts%20(2).pdf

 

Basic details re foundry sand

http://www.mtimetalcasting.com/DesktopModules/Bring2mind/DMX/Download.aspx?EntryId=12914&Command=Core_Download&language=en-US&PortalId=43&TabId=4484

 

Basic details re frac sand, including turbidity measurement

https://pubs.usgs.gov/of/2015/1107/pdf/ofr20151107.pdf

 

Here is some info from the UK:

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=27&cad=rja&uact=8&ved=0ahUKEwj1sI_Gg9PXAhUDQY8KHQhNA0AQFgi3ATAa&url=http%3A%2F%2Fconsult.kent.gov.uk%2Ffile%2F3203326&usg=AOvVaw1bV1omNpTKs2O43xg0lGx6

 

See also this discussion re deposits in Michigan, US as a characterization example.

http://geo.msu.edu/extra/arbogast/documents/SchrotenboerandArbogast.pdf

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