Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum

Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum (http://www.molecularstation.com/forum/)
-   Chemistry Forum (http://www.molecularstation.com/forum/chemistry-forum/)
-   -   How to supress Pyrophoresis - steaming iron (http://www.molecularstation.com/forum/chemistry-forum/43752-how-supress-pyrophoresis-steaming-iron.html)

hanson 09-09-2003 04:40 PM

How to supress Pyrophoresis - steaming iron
 
Now that the professionals in sci.chem, and sci.environment.waste
weren't able to furnish neither clever answers nor solutions, let me
repost it with the real, the dedicated to the core specialists, the
environmentalists:

Machining (turning, shaping, grinding, etc) of steel parts generates
iron wastes (chips, spirals, fines) containing small amounts of lubes
as mineral oils, glycols and fatty acid amid/amines and water.
This iron waste is drained to form sludge cakes that are accumulated
in a wet condition in huge piles in open transporter bins (30x12x5 ft).
When full, the stuff is hauled to the steel manufacturers for recycling.

In all too many cases whenever the stuff is laying there for some
weeks it gets so hot that steam and stink begins to rise from the pile.
Clearly it's the reaction of the steel with the water.

Question: what can be done to prevent this nasty steam occurrence?
Out of the question are: Drying, Watering, Covering or Diluting with sand.
Any ideas anybody?


Joćo Antonio 09-09-2003 05:56 PM

How to supress Pyrophoresis - steaming iron
 
Iron reacts very slowly with water, it should not produce
such amounts of heat to form steam. I don't think steel would
be more reactive.

Is the metal heated by an external source? Those fatty acids, specially
wen mixed with amines (nitrogen source) may be a suitable medium
for bacterial growing. This would account for stinking.

"hanson" <[Only registered and activated users can see links. Click Here To Register...]> escreveu na mensagem
news:Unn7b.5247$[Only registered and activated users can see links. Click Here To Register...].pas.earthli nk.net...


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system ([Only registered and activated users can see links. Click Here To Register...]).
Version: 6.0.516 / Virus Database: 313 - Release Date: 1/9/2003



d buebly 09-10-2003 03:48 AM

How to supress Pyrophoresis - steaming iron
 
On Tue, 09 Sep 2003 16:40:20 GMT, "hanson" <[Only registered and activated users can see links. Click Here To Register...]> wrote:



seems to be a bacterial sludge generating heat.
and the stink


Try bleach/Chlorine


All times are GMT. The time now is 05:29 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 - 2012 Molecular Station | All Rights Reserved

Page generated in 0.09123 seconds with 11 queries