[Stoves] Fwd: Inverted top lit updraught

[rongretlarson at comcast.net]

List: 
Here is the video that Das had previously promised. 

Ron 

----- Forwarded Message -----
From: "Agua Das" <aguadas at onebox.com> 
To: rongretlarson at comcast.net 
Sent: Tuesday, January 17, 2012 1:38:38 AM 
Subject: Re: [Stoves] Inverted top lit updraught 

Here is the link to the Bronze melter video 
http://www.youtube.com/watch?v=t08tj4NWUQY&feature=youtu.be 
Das 

On 1/16/12, Agua Das <aguadas at onebox.com> wrote: 
> Cast Iron melting with wood 
> 
> A wood fueled gasifier engine generator carbon arc can easily melt 
> steel to pouring temperatures. 
> 
> Torrefied wood has heating value close to coal. Torrefied wood as a 
> cupola fuel should be able to melt steel, however the high hydrogen 
> content torrefied wood fuel may cause hydrogen embrittlent and 
> porosity. Metallurgical coke is coal which has been heated to reduce 
> the H2 content. 
> 
> Higher temperature char isvery low in H2 would make a good cupola 
> fuel, especially if it is briquetted for a larger fuel lump size 
> needed for hotter metal temperature. The resulting steel should be 
> higher quality than with torrefied fuel. 
> 
> I have successfully poured cast iron using acetylene to make an Imbert 
> "V" hearth insert, however it was very hard on my refractory. 
> 
> Temperatures inside a char bed can easily burn off steel, stainless, 
> or inconel air nozzles. 
> 
> The ejector is a good distance from the fuel bed to protect the ejector 
> nozzle. 
> The ejector creates suction to move fuel gas and controlled secondary 
> air to produce a compact premixed flame with full control from 
> reducing to oxidizing melting conditions. 
> 
> Das 
> 
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