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Gold/Mining/Energy : Naxos Resources (NAXOF) -- Ignore unavailable to you. Want to Upgrade?


To: go4it who wrote (9109)2/13/1998 11:08:00 PM
From: citydi  Read Replies (1) | Respond to of 20681
 
HI EVERYONE,

Yes, I was hoping for a valentine from Naxos! Oh Well ~~ another day.

HAPPY VALENTINE'S DAY TO ALL!!!!!!!!!!!

City



To: go4it who wrote (9109)2/14/1998 9:07:00 AM
From: Kim W. Brasington  Read Replies (2) | Respond to of 20681
 
Charles:

The Johnson/Lett process is an extraction methodology and a preparation methodology for a standard fire assay. It is a matter of scale. The essence of the process is that it takes complex/refractory ores and converts them to standard ores so that standard means of assaying and recovery can then be used.

Most complex ores have a variety of pretreatments that are applied to them before they are subjected to a standard fire assay, as the refiner that you spoke to indicated. If pretreatment of complex ores before subjection to a standard fire assay were not allowed, you would have to throw away the vast majority of all assaying textbooks, and cancel out a great portion of all assays that have ever been done.

Heat is also a part of the process. At this moment I don't know what the BTU usage per ton is - most of that will be apparent after the large pilot plant comes on line. The last projection that I heard for the large pilot plant was sometime in the second quarter of this year. In the meantime, there is a smaller 1,000 pound a day test plant at Death Valley Junction that will be operating shortly.

Naxos has received permits that will allow the company to do extensive drilling of the playa at Franklin Lake. You can download the latest news release from www.naxosresource.com that gives the details about the permitting. In due course Naxos wants to establish reserves and run feasibility studies on the playa.

I hope that this has been of help.

Regards,

Kim W.



To: go4it who wrote (9109)2/14/1998 11:04:00 AM
From: Kurt R.  Read Replies (3) | Respond to of 20681
 
Charles: Your question about the BTU requirement made me curious and I did a quick and dirty calculation. I got a thermal energy requirement of approx. 1.3 million BTU (or 380 kWh) per US ton for the roasting process. So, if you were to use natural gas as fuel, the energy cost would be around $10per ton. Of course, the real numbers may be different, but a first theoretical approach gives you at least the order of magnitude we can expect. Here are my assumptions if somebody wants to double check this.

Specific heat of the ore: 1.0 kJ/kg K (assumed to be linear over the entire temp. range)
Roasting temperature: 1,064 Centigrades (the melting point of gold)
Overall efficiency of the roasting oven: 70%
conversions: 1 BTU = 1.055 kJ; 1 US ton = 900 kg.

Kim, I am glad to read in your recent post that the 1,000 lb. per day pilot plant is going to be up and running shortly. We sure could use some good news after what happened to IPM.

Kurt