WardBurner@aol.com on mon 17 nov 97
Hey Folks,
Boy has this been a mess....so I decided to pick up the phone and call
Cameron . People that give info need to be accurate and I needed to figure
out what happened here. I refered to definitions in an early post and I think
that's where things went off course.
Cameron's right. Bill's right Vince's right. I'm right. We were just talking
about slightly different things.
My original answer was about the nature of atmospheres. Cameron and Bill, I
believe, were talking about process. I was probably misleading by saying
oxidation cannot happen in an electric kiln. It can and does, but the nature
of the atmosphere's are very different. I was pointing out, that by
definition, an oxidizing atmosphere cannot happen in an electric kiln. I
stand by that. So, by definition, oxidation from an oxidizing atmosphere
cannot occur in an electric kiln. If things want to oxidize, they will as
long as there is oxygen present. I still prefer to consider the atmosphere in
an electric kiln as neutral. For clarity and by the definition of an
oxidizing atmosphere, I will continue to think of an electric kiln atmosphere
as neutral. It is the same air as we breath (after volitiles have burned
off). If you trap air from an electric kiln at cone 10, isolate it, then cool
it, you have pretty much the same thing as what you're breathing right now.
Now, take a sample from a gas kiln at cone 10, while in oxidation and do the
same thing. Try breathing that. Totally different animal. Look at it this
way; would you call the air your breathing now, oxidizing or neutral? Now,
start breathing from the exhaust of a gas fired water heater that is running
a little lean (an oxidizing atmosphere by definition). Have someone standing
by to call the paramedics. Sure, oxidation as a process is happening all
around and in us. Almost all of the oxygen for this is coming from the air,
but I don't think of, and by combustion definitions, the air you and I
breath, is not oxidizing.
Clear as mud, huh?
Marc Ward
PO Box 333
Dandridge, TN 37725
USA
423.397.2914 work
423.397.3070 home
423.397.1253 fax
wardburner@aol.com
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