List: This is pertinent to some questions on wood use in steel making asked by Alex English and others.
Ron ----- Forwarded Message ----- From: "Agua Das" <[email protected]> To: [email protected] Sent: Monday, January 16, 2012 6:52:47 PM Subject: Re: [Stoves] Inverted top lit updraught 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
_______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
