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Thread: Coal Slag?

  1. #1
    Av8tor1's Avatar
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    Coal Slag?

    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

  2. #2
    herenorthere's Avatar
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    Here's an MSDS for one product:

    http://www.reedmin.com/products/doc/...%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.
    Bruce in CT

    Madness is something rare in individuals but in groups, parties, peoples, ages it is the rule. Friedrich Nietzsche

  3. #3
    Av8tor1's Avatar
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    now herenorthere, omg dude



    ya nutbar
    Av

  4. #4
    Stay chooned in for more! Clint's Avatar
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    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.

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