Re: Properties Of Ash
With all the usual provisos that it varies depending upon where it comes from, etc. and you should really check the material you are intending to handle, one of the references I have (an MHEA Guide on belt conveying) gives:
Ashes Coal
Dry Fine 45 / 48 degrees
Wet Fine 48 / 55 degrees
Fly 42 degrees
Dry Coarse and Wet Coarse are also listed but no angle of repose is quoted.
The fly ash in particular was higher than I expected but that's what is quoted in this particular reference ■
Untitled
Fly Ash, Angle of Repose
Based on personal experience of paddling through the stuff, anywhere from zero degrees to 80 degrees!!
Take your pick. ■
Ash
Many thanks ■
Angle Of Repose
It is meaningless to talk about the angle of repose for fly ash and similar fine powders as this can vary from zero to over 90 degrees, depending on the degree of dilatation. (An extreme comparison is the angle of repose for water when changing from +1 degree C to -1).
Only use angle of repose for materials that form a stable and consistent slope, and then it is necessary to describe how it is formed and it is not a basis for designing hoppers. It's limited use is for such as assessing ullage and volume calculations for stockpiles ■
Properties of ash
Hi
do you have a value for the angle of repose for bottom ash and fly ash
Thanks in advance ■