Coal Slag?

[Av8tor1]

I went to my local vendor where I always purchased my sand blasting sand, well not anymore... they no longer carry any silica or quartz based products, now all they have is "black beauty" blasting media

it is coal slag, which at first thought would be ewwwwwwwwww (i had a coal fired furnace once upon a time) but on second thought... it might just work, it would seem like it should be inert

anyone have any experience with it?

basically just curious at this point


TIA,
Av

further research info:

SECTION II – PRODUCT COMPOSITION
Component Normal Composition (WT %) Range CAS Number OSHA PEL (mg/m3)
Silicon Dioxide [SiO2] 41-53% 7631-86-9 80 mg/m3
%SiO2
Quartz <0.1% 14808-60-7 10 mg/m3 [Respirable Dust]
%SiO2 +2
Cristobalite ND 14464-46-1 30 mg/m3 [Quartz Total Dust]
%SiO2 +2
Tridymite ND 15468-32-3 80 mg/m3 [Respirable Dust]
%SiO2
Aluminum Oxide [Al2O3] 17-25% 1344-28-1 15 mg/m3
Calcium Oxide [CaO] 3-15% 1305-78-8 5 mg/m3
Magnesium Oxide [MgO] 0-4% 1309-48-4 15 mg/m3 (Fume)
Iron Oxide [FeO] 7-31% 1309-37-1 10 mg/m3
Potassium Oxide [K2O] 0-3% 12136-45-7 NE
Titanium Dioxide [TiO2] 0-2% 13463-67-7 15 mg/m3
ND - Not Detectable
NE - Not Established
_________________________________________________________________________________________________
SECTION III – PHYSICAL DATA
Physical Form: Solid (Angular Granules)
Boiling Temperature: N/A
Melting Temperature: > 2500° F
Vapor Pressure/Density: N/A
Evaporation Rate: N/A
Specific Gravity: 2.7 g/cc Typical
Water Solubility: Negligible
Color: Black Coarse Solid
Odor: None
_________________________________________________________________________________________________
SECTION IV – FIRE/EXPLOSION/ REACTIVITY DATA
Product is nonflammable, non-explosive and stable under normal conditions of use, storage and transportation.



I think ive answered my own question LOL

ugh, can someone just give me a big !@# bag of some good quality sand sheesh LOL

 

[herenorthere]

Here's an MSDS for one product:

http://www.reedmin.com/products/doc/MSDS%20Abrasive%20and%20Roofing.doc

I don't know what form those alkalis (Ca, Mg, etc.) are in, but I wouldn't recommend it for CPs or similar plants without first testing it on your rarest, most prized plant.

 

[Av8tor1]

now herenorthere, omg dude



ya nutbar
Av

 

[Clint]

I know people have used it for aquatic plant substrate. The edges are sharp is what I remember most of all, sharp if you are a bottom feeding catfish that is.

Aquatic plants like a buttload of nutrients so I can't say if that stuff is inert or not.