[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Refractory Waste



    Some refractory brick will be accepted by the manufacturer for 
    re-use in the production of new product(s).  Should this be 
    possible, AND I AM UNABLE TO SPEAK FOR YOUR SPECIFIC CASE, be sure 
    to comply with any regulations (hazardous waste or otherwise) 
    which regulate the re-use/recycling of waste materials.  
    
    Again, pending regulations and chemical constitutents in the waste 
    (much more important when a waste is placed directly into the 
    environment...and this would NOT be acceptable for a hazardous 
    waste) some alternate uses may include:
    
    1) As an aggregate (which may require processing of the waste to 
    meet gradation specifications) in road base construction or the 
    construction of berms.
    
    2) In concrete or asphalt production...again as an aggregate 
    meeting gradation specs may be necessary.
    
    3) Should the waste be very "clean", use as "clean fill" may be an 
    option, or use as a pipe line bedding material.
    
    4) Should landfill disposal seem the only way to go, it may be 
    possible to work with the landfill to use the waste in a few 
    different ways which may result in free or reduced-cost disposal:
    
    a) As a sub-base in liner construction (would probably require a 
    permit modification for the landfill, processing of the waste, and 
    successful comparison to an existing virgin material, both 
    chemically and physically).
    
    b) As a protective layer over the primary or secondary liner, or 
    as a bedding material for a leachate collection system.  Being 
    above the liner system MAY reduce the need for the material to be 
    as clean as virgin material but a permit modification would still 
    be required.
    
    c) As a daily cover material on the working face, which may help 
    reduce the need for cover soil and associater truck traffic.
    
    d) It's a long shot, but as a layer of "select waste" initially 
    placed above a liner (usually the first 8 or 10 feet) for 
    additional liner protection.
    
    Recently, a foundry (steel) operation told us about a process 
    where liquid argon is used to "blanket" a melt.  The argon reduced 
    O2 and N intake resulting in reduced slag generation and 
    reportedly increased refractory life.  Such a method may be 
    helpful as a p2 option.
    
    Please let me know if any of these options pan out.
    
    Ric
    illig.richard@a1.dep.state.pa.us