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Gold/Mining/Energy : Solv Ex (SOLVD)
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To: mqmsi who wrote (5836)7/23/1998 3:08:00 PM
From: Larry Ricker  Read Replies (2) of 6735
 
Mark,

This was a pilot test of a plant in its startup phase. When I run such experiments (which I still do as a ChE), I take samples of every key location to see what is going on, to verify that stream compositions are as expected. The middle cut is a key stream going to the clay removal and "mineral recovery" step. It makes perfect sense to sample and analyze it (along with the other key streams). Not doing so in a pilot test would be negligent. In other words, this is precisely the "troubleshooting" situation where you indicate that you would do additional sampling.

You also say:

"He doesn't state, except for the filtered product, that any of the samples came from anywhere else. "

The Asensio site says:

"Samples of the "middle layers" in the log washer; samples of the log washer "froth;" samples of the "sand tailings;" and samples of the minute amount of filtered product all show extremely poor results."

I don't see how it could be clearer than that.

I would prefer to see the numbers too, but the data were SOLV's property, not Asensio's. He didn't run the tests. I doubt that he could legally provide the numbers. More to the point: why hasn't SOLV?

By the way, this process is supposed to run continuously at steady-state. It's not a batch process (though SOLV was running the logwasher batch-wise because the rest of the system wasn't working). Your cooking analogy is half-baked.

Larry
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