Method of magnetic separation and apparatus therefore

41 Pages·2007·2.57 MB·English

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United States Patent 1191 [ill Patent Number: 5,017,283
Oder [45] Date of Patent: May 21, 1991
[54] METHOD OF MAGNETIC SEPARATION 3,503,504 3/1970 Bannister .......................... 209/223.1
AND APPARATUSTHEREFORE 3,938,966 2/1976 Kindig et al. ..................... 44/622 X
4,052,170 10/1977 Yan ................................... 44/622 X
[75] Inventor: Robin R. Oder, Export, Pa. 4,137,156 VI979 Morey et al. ....................... 209/212
4,235,710 11/1980 Sun ............................... 209/223.1 X
[73] Assignee: EXPORTech Company, Inc., New 4,238,323 12/1980 Zakharova et al. ................ 209/212
Kensington, Pa.
FOREIGN PATENT DOCUMENTS
[21] Appl. No.: 462,331
0535106 11/1976 U.S.S.R... ......................... 209/223.1
[22] Filed: Dec. 21, 1989 0797114 3/1982 U.S.S.R.... ........................... 209/212
OTHER PUBLICATIONS
Related U.S. Application Data
[63] Continuation of Ser. No. 251,111, Sep. 28, 1988, aban- "Frantz Isodynamic Magnetic Separator", S. G. Frantz
doned. Co., Inc., Trenton, N.J., 1977.
[51] Int. Cl.5 ................................................ BO3C 1/00 Primary Examiner-Michael S. Huppert
[52] U.S. C1. ...................................... 209/212; 209/38; Assistant Examiner-Edward M. Wacyra
209/228 Attorney, Agent, or Firm-Michael J. Kline
[58] Field of Search ...................... 209/3, 38, 212-215, WI ABSTRAm
209/223.1, 228, 231; 44/608, 620-622, 627
An apparatus for magnetically separating and collecting
[561 References Cited particulate matter fractions of a raw sample according
U.S. PATENT DOCUMENTS to relative magnetic susceptibilities of each fraction so
collected is disclosed. The separation apparatus in-
653,342 7/1900 Gates ................................... 209/212 cludes a splitter which is used in conjunction with a
731,038 6/1903 Gates ................................... 209/212
magnetic separator for achieving the desired fraction-
1,829,565 10/1931 Lee ...................................... 209/212
2,694,223 11/1954 Stem ............................. 209/223.1 X ation.
3,279,602 10/1966 Kottenstette et al. .............. 209/214
3,318,447 5/1967 Ellingboe, Jr. et al. ..... 209/223.1 X 9 Claims, 17 Drawing Sheets
U.S. Patent May 21,1991 Sheet 1 of 17 5,017,283
50 *
A
'I
-
40 I' \ ----- Weight
/ \ Sulfur
- -
/ \ . .- . .- Ash
I \
- I \
30
/ \
I
I ' \
\ '
- / ,.?
20 I \ r-
/ \
-
10
-
\
0 Ill I111111 I I I , . . I I I IIIII I I I Ill[
-
2.0 0.0 2.0 4.0
Distance Fromhiagnet Face
+I. SAmps o1.9Amps
NG- 2
Amps
OW7'
5,017,283
U.S. Patent May 21, 1991 Sheet 2 of 17
NmMAUZED MAGNETIC ENERGY GRADIENT
Frantz Isodynamk Sepdrator Mgnet
0.8
-
0.7
44
-('
016
€
c,
0,5
cu
&
0.4
p3
\ 013
><
9
012
3
0.1
m
0.0
-0.I
-0,2
-03
-2.0 0,o 2.0 4.0
Distance From kgnet Face (em)
.MAmps +I, 5 Amps 01.9 Amps
0
FIG, 3
MAXIMUM MAGNETJtC FIELD AT SPLITTER
Fran tz Isodynamic Separator
-
21 -.
20 -.
19-
2 18-
17-
g
16-
--
15-
0
3 14-
-
13
s.;;;
12-
I i -
~d IO-
3
-2 9-,
0c, o 8-
gE 6:
5
5
4:
E 3-
ii
2-
9
I -
0
I I I I I I I 1 I l l 1 I , , I 1 1 1
0 0.2 0.4 06 0.8 I 1.2 1-4 1.6 IS 2
FIG- 4
Magnet Current (Amps)
U.S. Patent 5,017,283
May 21,1991 Sheet 3 of 17
NmMALIZED FIELD AND ENERGY GRADIENT
Frantz Isodynamic Magnetic Separaior
NNoorrmmaalliizzeedd QQuuaannttiittiieess
11..00
II--
7
Magnetic Field
--
001166
-
-
\c
0.2 Energy Gradient
-
\
\
-0.2 -
- \-----
I I I I I I I I
FIG, 5
U.S. Patent May 21,1991 Sheet 4 of 17 5,017,283
ASH REJECTION, 5 PENNSYLVANIA COALS
Dry OGMS, -30,325 Mesh
I M
First Separation Second Separation
SULFUR REJECTION, 5 PENNSYLVANIA COALS
Dry OGMS, -30+ 325 Mesh
loo
90
80
70
60
50
40
30
20
10
0
-
-10
-
20 i
I
First Separation Second Separation
eaLK mUF a P G r m L F mpWa.
66
U.S. Patent 5,017,283
May 21,1991 Sheet 5 of 17
DISTRIBUTION OF MAGNETICS
30x50 Mesh Lower Kittanhg Raw Coal
1
70
60
50
40
30
20
10
0
0.5 1.5 2.5 3.5
AAppppaarreenntt MMaaggnneettiicc SSuusscceeppttiibbiilliittyy
oAsh +Sulfur o Weight
FIG- 7
~
MAGNETOGRAPH
tl50 Microns, Lunar Soil Sample 64421
c1
SI
*-
20
E
2
. csJ
10
0
v)
z
c
0
40.8 0.8 5.5 63,8 740.3
N G, 8 Magnetic Susceptibility(/O~-6c c/gm)
U.S. Patent May 21,1991 Sheet 6 of 17 5,017,283
MAGNETO GRAPH
450 Microns, LSS No. 64421
60%
50 X
40 %
30%
20%
10%
0%
an
4 0.75 5.58 64.9 699
Magnetic Susceptibility (10"-6 cgs/gm)
Anorthite +Agglut hates oweight
0
FIG, 9
-
ANORTHITE AND AGGLUTINATE RECOVERY
+44 Micron, Lunar Soil Sample # 64421
100%
90%-
80%
-
70%
-
60%-
E 5096-
s
5
40%-
0 ,
gc,
30%-
-
20%
10%-
0%
I
0% 20% 40% 60% 80% 100%
+44 Micron Weight Recovery, Wt %
FIG. IO
OAnorthite +Agglutinate
U.S. Patent May 21,1991 Sheet 7 of 17 5,017,283
MAGNETO GRAPH, CARLTON PEAK ANORTHOSITE
300 X 600 Micron Fraction
(0.15 0.15 0.38 0.75 1,5 3 6 12.5 25 51
Magnetic Susceptib;lity (/OA-6 c dgm)
FIG- I1
Do%
-
2 90%
CI
80%-
b -
670%
C
gsox -
f
P W 4 -
h
s 40%-
+
-
30%
c,
f2
20%-
C
2 IO%-
w
0’4 !
1 I I I 1 I 1 1 I
0% 20% 40% 60% 80% 100%
FIG.12
Weight Recovery, W t %
*
U.S. Patent 5,017,283
May 21,1991 Sheet 8 of 17
MAGNETO GRAPH ,
44 X 150 Microns, MLS-I
40 %
-
35 %
% 30%
-
u'
3
25%
3C
0
20%
'-
L
G 15%
Q
10 %
5%
'
0%
(0.3 0.3 1,2 2.3 4.6 9.3 I9 38 75 150 300 644 1M S O
Magnetic Susceptibility (10n-6 cc /gm 1
NG, 13
o Wight +Iron
IRON RECOVERY VS WEIGHT RECOVERY
+ 44 Micron, Minnesota funtar SirnuIant I
100%
-
90%
- -
80%
70%-
8
g
60%-
b -
2 50%
:
40%-
8
a
30% -
C
c;"
20%-
-
10%
0%
I I I I I I I f I
x
RG 14 0% 20 40% 60% 80 % 100%
Weight Recovery Wt. % 1
US. Patent 5,017,283
May 21,1991 Sheet 9 of 17
FEED
MATERIAL
i
f15/’8
CRUSH
i I
SCR+E EN 0.713cm
,
<I3
U
17-
MAGN€7TC
ISOLATES
FIG, 15
FIG, 16
-22
0.713cm