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2021-07-14_REVISION - M2012032 (4)
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2021-07-14_REVISION - M2012032 (4)
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Last modified
1/11/2025 4:19:57 AM
Creation date
7/15/2021 6:35:11 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M2012032
IBM Index Class Name
REVISION
Doc Date
7/14/2021
Doc Name Note
II of II
Doc Name
Adequacy Review Response
From
Ouray Silver Mines
To
DRMS
Type & Sequence
TR15
Email Name
LJW
Media Type
D
Archive
No
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FLSmidth USA, Inc. <br /> 7158 S FLSmidth Drive • Midvale • UT 84047-5559 • USA M ' D T H <br /> flocculent solution prepared at 0.1-g/L to the diluted feed slurry. Flocculated slurry is <br /> pumped to a feed well for the continuous fill test. <br /> The fill rate and flocculent dosage are set initially to be about 50% of the predicted solids <br /> flux rate at 100% of the expected flocculent dosage on a gram per tonne basis. After initial <br /> observations of floc structure and settling velocity, the test operator increases the fill rate to <br /> approach the expected maximum while holding the floc solution flow rate constant, thus <br /> decreasing the floc dosage. If floc structure and overflow clarity continue to be good, the <br /> decrease in dosage is noted and the test continued. If degradation in floc structure or <br /> clarity is noted, the flocculent solution flow rate is increased until performance returns and <br /> the dosage noted. <br /> Once a sufficient solids bed depth develops, FLS stops the fill portion of the test and the <br /> static portion begins. The static portion consists of monitoring and recording the interface <br /> height over time. FLS records the interface height over customary time intervals until the <br /> interface height stabilizes. Slow speed rakes operate continuously during the fill and for the <br /> static test to this point. <br /> Once the interface height remains constant, FLS removes the thickened material from the <br /> cylinder (without dilution) to measure the solids concentration. <br /> An image of the continuous fill testing apparatus is shown in Figure 1. <br /> Page 1 6 <br />
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