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  • Users: SamCheung
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  1. SamCheung

    CaSO4 to produce H2SO4

    I understand that CaSO4 + C can produce H2SO4, Lime and other by products. Is there any company in the USA or Europe actually doing this? S is now very expensive now compared with a few years ago or even last year -> H2SO4 produced by direct combustion is now getting very expensive.
  2. SamCheung

    Heat required to liberate CO2 with one kg-mole CaCO3

    Please advise me what is the required heat to liberate CO2 with one kg-mole of CaCO3, starting from room temperature of 68F, thanks. I know CO2 will start to liberate @932F.
  3. SamCheung

    Rated MDMT

    Under what circumstances SA105 Flanges (B16.5) will have a rated MDMT of -155DegF? What went wrong?
  4. SamCheung

    Strength & Properties of ASTM A36 Steel at -40F

    Why is it not suitable for -40DegF?

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