While searching the internet, here is what I found:
Black Beauty® Abrasive
AKA: Boiler slag, coal slag
Chemical Name:
An amorphous mixture of Fe, Al, and Ca silicates
Description:
A black boiler slag abrasive with the following advantages: low
moisture content, high degree of etch for permanent bonding of coatings,
readily used in standard equipment in commerce, inert, fast cutting due
to sharp angular edges, hardness, more economical,longer lasting and
leaves minimum dust
Typical Chemical Composition
Silicon Dioxide= 47.20%,
Aluminum oxide= 21.39%,
Titanium dioxide= 1.01%,
Ferric oxide= 19.23%,
Calcium oxide= 6.80%,
Magnesium Oxide= 1.47%,
Potassium Oxide= 1.60% and
Sodium Oxide= 0.62%
Grades:
Utility Grade #BB1043- A coarse grade used for tough blasting jobs
Medium Grade #BB1243- Used for general purpose repair and maintenance
blasting
Fine Grade #BB2043- Used for new construction, light paint and rust
removal, and for special maintenance applications requiring reduced
profiles
Extra Fine Grade #BB3063- Used to clean surfaces and create a smooth
finish, Brush-Off Blast, or in a high pressure water blast system
Typical Physical Properties:
Particle Shape angular, sharp
Specific Gravity (g/cm3) 2.7
Bulk Density (g/cm3) 75-1-- lbs. per cu. ft.
Melting Point (°C) greater than 2300
Moisture Content less than 0.5%
Conductivity @230°C (cal/s-cm-°C) less than 25 micro Siemens
Mohs Hardness @20°C 6-7
Free Silica less than 1%
Typical Applications:
Used frequently as an sandblast abrasive on sea faring vessels, tanks,
aggregate exposure, castings, structural steel, buildings, railroad
equipment and bridges.
Packaging:
Multiply paper bags, bulk bags and loose bulk
TSCA (SARA Title III) Status:
Unknown. For further information please call the E.P.A.
at 1.800.535.0202
CAS Number:
68476-96-0
Carcinogenicity:
o NTP= No
o IARC Monographs= No
o OSHA Regulated= No
Safety Comment:
When used as a blasting abrasive, carefully review and
follow the recommendations stated in the Material Safety Data Sheet
Trademark:
Black Beauty is a registered trademark of Harsco Corporation, and Black
Beauty ® Abrasive is manufactured by Harsco through its Reed Minerals
Division.