[SEL] Anyone Ever Used Phosphoric Acid to DeRust

[Rupert Wenig]

Thanks. The mixture I tried was about 3 parts molasses to one part 
water. Mold grew on it in short order. Will try it again but at the 
proper mixture this time.
	I'm experimenting with condensate collected from an energy efficient 
boiler. This water is supposed to be acidic. It appears promising but 
it's too soon to tell yet how well it works. What I know at this time is 
the water turns brown and crud collects at the bottom of the pail. My 
test iron sample was through a fire. Have some cast iron in the water 
now that didn't get so hot.

Rupert

Orrin Iseminger wrote:
> I've tried de-rusting things that have been through a fire.  Some of the
> scale seems impervious to anything I threw at it, including electrolysis,
> acid, and abrasive blasting.  
> 
> The recommendation I've seen for dilution is one part molasses to 3 or 4
> parts water. 
> 
> Regards, 
> 
> Orrin
> 
> Orrin Iseminger
> Colton, Washington, USA
> http://users.moscow.com/oiseming/lc_ant_p/index.htm
> So many projects.  So little time.   
> 
> -----Original Message-----
> From: sel-bounces at lists.stationary-engine.com
> [mailto:sel-bounces at lists.stationary-engine.com] On Behalf Of Rupert Wenig
> Sent: Friday, November 10, 2006 5:25 AM
> To: The SEL email discussion list
> Subject: Re: [SEL] Anyone Ever Used Phosphoric Acid to DeRust
> 
> 	I'm trying to clean up some items that went through a fire and sat 
> outside for a year or so. I haven't had much luck using molasses to 
> remove rust. I must have had the wrong mixture. What percentages of 
> molasses and water do you use?
> 	
> 
> Rupert
> 
> Orrin Iseminger wrote:
>> For your crankcase, I'd suggest either molasses or a solution of salt and
>> vinegar.  Just dissolve as much salt as you can in the vinegar and pour
> the
>> solution into your crankcase.  It would be cheaper than phosphoric acid
> and
>> you probably have already have the supplies you need for the job.   
>>
>> IMHO, you'll have a slower, more controllable reaction with molasses or
>> salt/vinegar.  
>>
>> After de-rusting, I'd passivate the surface with Ospho, or similar.  
>>
>> Regards, 
>>
>> Orrin
>>
> --
> yvt
> 
> Rupert Wenig
> Camrose, Alberta, Canada.	
> 		
> http://www3.telus.net/public/rwenig/
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-- 
--
yvt

Rupert Wenig
Camrose, Alberta, Canada.	
		
http://www3.telus.net/public/rwenig/