The
tested red sludge sample origins from
Yueyang Dalishen Electromagnetic Machinery Co.,
Ltd.
No.1
Tel. /Fax: +86-730-7600700
Test
Report
Date of test: Sep. 27th, 2012
Tested by: Zhou Qizhen, Yang Dishan, Yang
Wenyong, Wan Weihong
The sample is red mud (bauxite residues after
Bayer process for alumina). Moisture is 14.07% and Total Fe% is 31.32% after
chemical analysis.
I.
Purpose of test:
Test with high gradient magnetic separator, to
see the feasibility of beneficiation of red mud.
II.
Flow Sheet, Test Parameter and Result
Test I
1.
Flow sheet
2. Test Parameter
1. Test Machine: DLS-50 Vertical Ring High Gradient
Magnetic Separator
2. Concentration of Slurry: m% 30%
3. Magnetic Conductive Medium in Matrix: Steel
Rod ø2mm
4. Frequency of Pulsation: 300r/min
5. Rotation Speed: 20s/r
6. Grinding Particle Size: no grinding
3. Test Result
Test
II
1. Test Parameter
Test I and Test II is similar, with the
same flow, some alterations are:
1. The feed sample is ground for test II, particle size distribution
is D95<100 mesh.="" o:p="">
|
2. Background magnetic intensity for test is 0.4T.
2. Flow Sheet
3. Test result
Sample
|
Total Fe%
|
Yield Rate %
|
Recovery %
|
Feed
|
31.32
|
100
|
100
|
Concentrates
|
51.11
|
18.93
|
30.89
|
Tailings
|
26.70
|
81.07
|
69.11
|
Test
III
1. Test Parameter
Test III is Complex
flow, except the background magnetic field intensity, other test parameters
are the same with Test I.
2. Flow Sheet
3. Test result
Sample
|
Total Fe%
|
Yield Rate %
|
Recovery %
|
Feed
|
31.32
|
100
|
100
|
Concentrates of Roughing
|
47.36
|
30.64
|
46.33
|
Tailings of Roughing
|
24.24
|
69.36
|
53.67
|
Concentrates of Cleaning
|
52.97
|
12.75
|
21.56
|
Tailings of Cleaning
|
43.46
|
17.89
|
24.77
|
Total Tailings
|
28.16
|
87.25
|
78.44
|
Preliminary Conclusion
1.
Total Fe% can be upgraded to
about 51% by one-time high gradient magnetic separation, with yield rate of
concentrates 19%.
2.
Total Fe% can be upgraded to
about 53% by complex separation, with yield rate of concentrates 13%.
Hi very good post, Got relevent information about Electromagnetic Separators. These electromagnetic seperators find wider apllications in the industry.
ReplyDeleteVery cool to see these magnetic separators being used to separate iron from red mud. It is interesting to see how many different applications these high grade magnets have. Thank you for sharing!
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