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Strategies & Market Trends : Winter in the Great White North -- Ignore unavailable to you. Want to Upgrade?

To: E. Charters who wrote (2964)	9/9/2002 8:21:29 PM
From: marcos	Read Replies (2) \| Respond to of 8273

Can't let any sulphur out the stack today, none at all ... so if you're generating heat by burning sulphur, what do you do with the ess oh two? .... sure technology may exist to separate 99.9% of it, but it's expensive, and then getting your setup permitted is another thing sul.v - Sultan options Kena to Kinross - #reply-17970914 ngt.v - Zinger news - #reply-17970460 dy.to - when i posted upthread on Dynatec i didn't know there was news out ... how about 64 feet of 336 dollar rock, eh - kitco.com Have you ever talked to Dynatec people, worked for them, heard rumours in bars, etc

To: E. Charters who wrote (2964)	9/12/2002 3:24:53 AM
From: E. Charters	Respond to of 8273

Make that 36,000 horsepower from roasting 100 tons of pyrite per day. Not 49,000 horsepower. 36K HP is ~25 megawatts, or enough to run a 10,000 ton per day mine and mill. So many sulphide milling facilities could get all their power from co-gen. I am equating the exothermicity (i.e. it burns, it is a fuel) of pyrite with coal on a pound for pound basis but I may be wrong here. I did not do a latent heat or enthalpy calculation in terms of the oxidization of FeS2 to FeO and 2-SO2. SO2 can be abated by catalytic towers at the rate of about 99.5% reduction in off-gas. (Or possibly better) One could even bubble the gas through water and add H2S to precipitate it almost completely as well. A 100 ton per day sulphide burn that emitted 0.5% would send 1000 pounds of S02 into the air every day. Disregarding buffering in the environment, which does take place, and is considerable, if all that S02 turned to H2S04, that is 90 tons of H2S04 in one year. With complete dissociation in water, this would bring a lake 5.9 miles square, 50 feet deep to the Ph of lemon juice, or 5.5. ( 5.5 Ph is one part H3O, in moles per litre water, in 316,000. There are 4 million or so moles of acid in 90 tons of Sulfuric) Does it work like that or does the SO2 become H2S03, which is a weak acid and only mildly dissociative? I think it is the latter, because Inco pumps out 700 tons of S02 perhour and if it were completely dissociating, we would be swimming in acid by now. EC<:-}