Ammonium Nitrate Prill Angles

Posted in: , on 4. Mar. 2009 - 02:09

Hi,

I am looking for the angle of repose and surcharge angle for ammonium nitrate prill. Properties:

density = 730 - 800 kg/m3

size = 1.6 - 2.2 mm (dia)

humidity = 0.10 - 0.12% (w/w)

I have had a good look through literature and on the internet, but possibly I am just looking in the wrong places!

Thanks in advance,

Matt ■

----------------------------------------------------------------------- Matthew Dames Graduate Mechanical Engineer United Group Limited Resources Perth, Australia
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Ammonium Nitrate

Posted on 4. Mar. 2009 - 04:22

Prilled ammonium nitrate is hygroscopic and cakes fast.

Coated ammonium nitrate is rather free flowing.

Prilled ammonium nitrate for agri use has a angle of repose of 22 Deg.

This site will give you more details.

http://www.agrium.com/1293.jsp ■

vinayak sathe 15, Rangavi Estate, Dabolim Airport 403801, Goa, India vinayak.sathe@gmail.com

Re: Ammonium Nitrate Prill Angles

Posted on 8. Mar. 2009 - 11:55

Thanks Vinayak. I had found this site.

Obviously the density of agricultural ammonium nitrate prill is significantly different to that of prill used for explosive purposes (900 compared with 780kg/m3). Surely this will have an effect on the angle of repose? I am also looking for the surcharge angle. I realise this can be approximated to be 10-15 degrees less than repose, but a more accurate figure would be desirable.

Thanks,

Matt ■

----------------------------------------------------------------------- Matthew Dames Graduate Mechanical Engineer United Group Limited Resources Perth, Australia

Fertilizer Prills

Posted on 28. Apr. 2009 - 09:25
Quote Originally Posted by mdamesView Post
Hi,

I am looking for the angle of repose and surcharge angle for ammonium nitrate prill. Properties:

density = 730 - 800 kg/m3

size = 1.6 - 2.2 mm (dia)

humidity = 0.10 - 0.12% (w/w)

I have had a good look through literature and on the internet, but possibly I am just looking in the wrong places!

Thanks in advance,

Matt

Considering what the material is you are asking about it is no wonder you are unable to find common information about it

By simply taking a very large cup full of farm fertilizer and tipping it over in one quick movement it will give you same information-remember that fertilizer starts with a grain of sand and the fertilizer is scalped/applied to the individual sand grain.

lzaharis ■