Index
Introduction Introduction Design of the JIG installation installation Saw-tooth movement IHC drive system Grain size Employment Employment of the the JIG installatio installation n Recovery Recovery IHC JIG JIG Advantages Advantages of the IHC JIG Standard JIG installation range
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Index
Introduction Introduction Design of the JIG installation installation Saw-tooth movement IHC drive system Grain size Employment Employment of the the JIG installatio installation n Recovery Recovery IHC JIG JIG Advantages Advantages of the IHC JIG Standard JIG installation range
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Introduction
The IHC has a complete range of JIG installations which can handle a large capacity on a relative small plant with a high recovery. IHC Holland has undertake theoretical and practical research into the design and performance of mineral dressing jigs. Lengthy, far reaching studies and test were carried out by IHC. These resulted in a development of a greatly improved jigging cycle, where the harmonic motion of the conventional eccentric-driven jig is replaced by an asymmetrical ‘saw-tooth’ movement. IHC Holland offers two possibilities to perform this task: a mechanical drive and a mechanical-hydraulic drive depending on the number of modules. The JIG has been successfully used on onshore and offshore dredgers and mines, for separating minerals like tin, gold, diamonds and iron ore.
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Introduction
The IHC has a complete range of JIG installations which can handle a large capacity on a relative small plant with a high recovery. IHC Holland has undertake theoretical and practical research into the design and performance of mineral dressing jigs. Lengthy, far reaching studies and test were carried out by IHC. These resulted in a development of a greatly improved jigging cycle, where the harmonic motion of the conventional eccentric-driven jig is replaced by an asymmetrical ‘saw-tooth’ movement. IHC Holland offers two possibilities to perform this task: a mechanical drive and a mechanical-hydraulic drive depending on the number of modules. The JIG has been successfully used on onshore and offshore dredgers and mines, for separating minerals like tin, gold, diamonds and iron ore.
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Introduction
The feed enters the jig in the centre and flows radially over the jig bed towards the tailing chute. The jig bed usually consists a layer of coarse heavy particles, the ragging, placed on the jig screen, and the mixture of sand and mineral particles, fed as a slurry on top of the ragging, also penetrating into the ragging. The ‘saw-tooth’ movement causes the heavy and coarse grains to pass rapidly through the bed, while the fine sand and lighter minerals take more time to penetrate through the ragging and screen, to be drawn of as concentrate.
4
Introduction
The feed enters the jig in the centre and flows radially over the jig bed towards the tailing chute. The jig bed usually consists a layer of coarse heavy particles, the ragging, placed on the jig screen, and the mixture of sand and mineral particles, fed as a slurry on top of the ragging, also penetrating into the ragging. The ‘saw-tooth’ movement causes the heavy and coarse grains to pass rapidly through the bed, while the fine sand and lighter minerals take more time to penetrate through the ragging and screen, to be drawn of as concentrate.
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A sampling on an IHC 12 module jig, installed on a tin dredger demonstrated that the IHC drive mechanism attained an over 95 percent recovery.
A sampling on an IHC 12 module jig, installed on a tin dredger demonstrated that the IHC drive mechanism attained an over 95 percent recovery.
Desi De si n of the the JIG JIG insta installa llati tion on
Dedication to technical excellence, long experience and feedback form a large client base have underpinned development of the IHC JIG installations, a high recovery, versatile, simple and robust piece of mining equipment. The IHC JIG installations have been designed for those who must separate mineral grains costeffectively.
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Desi De si n of the the JIG JIG insta installa llati tion on
Dedication to technical excellence, long experience and feedback form a large client base have underpinned development of the IHC JIG installations, a high recovery, versatile, simple and robust piece of mining equipment. The IHC JIG installations have been designed for those who must separate mineral grains costeffectively.
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Desi De si n of the the JIG JIG insta installa llati tion on
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Desi De si n of the the JIG JIG insta installa llati tion on
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Desi De si n of the the JIG JIG insta installa llati tion on
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Desi De si n of the the JIG JIG insta installa llati tion on
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Of the various mineral dressing methods, gravity concentration is a simple and widely used process to separate mineral grains of different specific gravities.
Of the various mineral dressing methods, gravity concentration is a simple and widely used process to separate mineral grains of different specific gravities.
Saw-tooth movement
The JIG ‘saw-tooth’ pulsation pattern, developed by IHC is superior to conventional patterns in eliminating or reducing hutch water requirement and improved recovery capability of the fine valuable minerals. The ‘saw-tooth’ movement consists of a upward and a downward stroke. In order to prevent los of fine ore during upward stroke, the aim has been to produce a fierce upward stroke of short duration. The downward stoke also called suction stroke is much longer; the fine particles are now being drawn into the bed.
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Saw-tooth movement
The JIG ‘saw-tooth’ pulsation pattern, developed by IHC is superior to conventional patterns in eliminating or reducing hutch water requirement and improved recovery capability of the fine valuable minerals. The ‘saw-tooth’ movement consists of a upward and a downward stroke. In order to prevent los of fine ore during upward stroke, the aim has been to produce a fierce upward stroke of short duration. The downward stoke also called suction stroke is much longer; the fine particles are now being drawn into the bed.
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IHC IH C dr driv ivee s st stem em
IHC Holland offers two types of drive system to accomplish the ‘saw-tooth’ movement: Mechanical drive system Mechanical-hydraulic drive system Each system has its own features, and the choice which drive system to use will depend on the number of modules to be operated. One or two modules will be driven by the mechanical drive system, while jigs having more than two modules will be driven by the mechanicalhydraulic system.
Power requirements Both drive systems have a considerably low power consumption per driven module. Flexibility of stroke and frequency adjustment Both drive systems have continuous speed regulation feature; for changing the stroke the jig must be stopped to adjust or change the cam. Stroke pattern adjustment The drive system characteristics can be changed over a very wide range, and also almost any type of curve can be provided. Installation and serviced requirements Both drive systems can be installed and serviced with normal technical skill and care. 12
IHC IH C dr driv ivee s st stem em
IHC Holland offers two types of drive system to accomplish the ‘saw-tooth’ movement: Mechanical drive system Mechanical-hydraulic drive system Each system has its own features, and the choice which drive system to use will depend on the number of modules to be operated. One or two modules will be driven by the mechanical drive system, while jigs having more than two modules will be driven by the mechanicalhydraulic system.
Power requirements Both drive systems have a considerably low power consumption per driven module. Flexibility of stroke and frequency adjustment Both drive systems have continuous speed regulation feature; for changing the stroke the jig must be stopped to adjust or change the cam. Stroke pattern adjustment The drive system characteristics can be changed over a very wide range, and also almost any type of curve can be provided. Installation and serviced requirements Both drive systems can be installed and serviced with normal technical skill and care. 12
Grain size
The JIG is a remarkable concentrator with the capability of handling large tonnages and thereby coping with widely fluctuating loads, not only in volume but also in pulp density and grain size. It can take feeds coarser than 25mm and as fine as 0.06mm and will concentrate a wide range of minerals such as diamonds, gold and tin.
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Grain size
The JIG is a remarkable concentrator with the capability of handling large tonnages and thereby coping with widely fluctuating loads, not only in volume but also in pulp density and grain size. It can take feeds coarser than 25mm and as fine as 0.06mm and will concentrate a wide range of minerals such as diamonds, gold and tin.
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Grain size
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Grain size
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Em lo me men nt of of the the JI JIG G ins insttal alla lati tion on
The JIG installations are available in different sizes; ranging from a normal feed of 20 cu. mtr/hr to 225 cu. mtr/hr with a maximum power consumption of 4.50 kW respective 27.50 kW. The operation weight varies from 11 220 kgs to 125 000 kgs. Specifications of the complete series are shown in the table. Mineral dressing is a necessity in practically all mining operations in order to process the mined ore to marketable products. The JIG installation can be used in variety of mining projects, onshore as well offshore for separating minerals.
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Em lo me men nt of of the the JI JIG G ins insttal alla lati tion on
The JIG installations are available in different sizes; ranging from a normal feed of 20 cu. mtr/hr to 225 cu. mtr/hr with a maximum power consumption of 4.50 kW respective 27.50 kW. The operation weight varies from 11 220 kgs to 125 000 kgs. Specifications of the complete series are shown in the table. Mineral dressing is a necessity in practically all mining operations in order to process the mined ore to marketable products. The JIG installation can be used in variety of mining projects, onshore as well offshore for separating minerals.
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Em lo me men nt of of the the JI JIG G ins insttal alla lati tion on
Nominal feed
Nominal feed
Power demand norm.
(cu. m/hr )
(cu.yr/hr )
(kW)
(kW)
(kgs)
(kgs)
JL -01-E
20
26
3.30
4.50
5 100
11 220
JL -02-E
40
52
6.00
7.30
9 600
19 830
JL -03-E
55
72
8.00
12.00
16 800
35 500
JL -04-E
75
98
8.00
12.00
20 700
45 140
JL -05-E
95
124
10.50
14.50
26 000
56 900
JL -06-E
115
150
12.50
17.50
28 000
65 000
JL -6/2-E
150
196
13.50
19.00
36 000
83 800
JL -6/4-E 1
190
248
16.00
23.00
43 000
101 000
JL -6/4-E 2
190
248
18.50
26.00
45 000
110 000
JL -6/6-E
225
294
20.00
27.50
50 000
125 000
Type
Power demand max.
Construc tion weight
Operation weight
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Em lo me men nt of of the the JI JIG G ins insttal alla lati tion on
Nominal feed
Nominal feed
Power demand norm.
(cu. m/hr )
(cu.yr/hr )
(kW)
(kW)
(kgs)
(kgs)
JL -01-E
20
26
3.30
4.50
5 100
11 220
JL -02-E
40
52
6.00
7.30
9 600
19 830
JL -03-E
55
72
8.00
12.00
16 800
35 500
JL -04-E
75
98
8.00
12.00
20 700
45 140
JL -05-E
95
124
10.50
14.50
26 000
56 900
JL -06-E
115
150
12.50
17.50
28 000
65 000
JL -6/2-E
150
196
13.50
19.00
36 000
83 800
JL -6/4-E 1
190
248
16.00
23.00
43 000
101 000
JL -6/4-E 2
190
248
18.50
26.00
45 000
110 000
JL -6/6-E
225
294
20.00
27.50
50 000
125 000
Type
Power demand max.
Construc tion weight
Operation weight
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Em lo me ment nt of th thee JIG JIG in inst stal alla lati tion on
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Em lo me ment nt of th thee JIG JIG in inst stal alla lati tion on
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Nature has given the example by creating alluvial, eluvial and residual ore deposits, in which gravity separation had played a dominant role.
Nature has given the example by creating alluvial, eluvial and residual ore deposits, in which gravity separation had played a dominant role.
Reco Re cove verr IH IHC C JIG JIG
IHC has undertaken theoretical and practical research into the design and performance of mineral dressing jig. These resulted in the development of a greatly improved cycle. Below some recovery examples are shown for diamonds, tin and gold. Diamonds One module type jig was quite exhaustively tested for diamond beneficiation whereby the preliminary conclusion was that the jig jig fed at a feed rate between 5 and 6 metric tonnes tonnes per hour, proved to be better than 95 wt % efficient on recovering diamonds of - 4 mm to + 0,5 mm range. Tin After adjusting18 primary jig type the recovery of tin increased from 95% to 99%. This sampling at an open pit mine in Thailand proves that the lower strokes per minute results in a better recovery than the higher jigging frequency. Gold The results on gold recovery on a gold dredger, shows no losses. The recovery on this sample is 99% with a three stage jig installation. 20
Reco Re cove verr IH IHC C JIG JIG
IHC has undertaken theoretical and practical research into the design and performance of mineral dressing jig. These resulted in the development of a greatly improved cycle. Below some recovery examples are shown for diamonds, tin and gold. Diamonds One module type jig was quite exhaustively tested for diamond beneficiation whereby the preliminary conclusion was that the jig jig fed at a feed rate between 5 and 6 metric tonnes tonnes per hour, proved to be better than 95 wt % efficient on recovering diamonds of - 4 mm to + 0,5 mm range. Tin After adjusting18 primary jig type the recovery of tin increased from 95% to 99%. This sampling at an open pit mine in Thailand proves that the lower strokes per minute results in a better recovery than the higher jigging frequency. Gold The results on gold recovery on a gold dredger, shows no losses. The recovery on this sample is 99% with a three stage jig installation. 20
Advan Ad vanta ta es of th thee IHC IHC JIG
The advantages of the IHC JIG comparing to the conventional jigs are:
Reduction of pulp flow velocity over the jig bed. Good pulp distribution over the total jig area. Significant reduction of hutch water requirement. Increased handling capacity per unit of jig area. Low power pulsing mechanism.
In terms of dredge design and operation these features mean:
Simplified distribution system. Ability to handle coarser feed material. Improved recovery of fine grains. Improved performance under overload conditions. Smaller total treatment plant area. Reduced total height of treatment plan. Reduced running cost because of no or minimal hutch water requirement and low power jig drive. 21
Advan Ad vanta ta es of th thee IHC IHC JIG
The advantages of the IHC JIG comparing to the conventional jigs are:
Reduction of pulp flow velocity over the jig bed. Good pulp distribution over the total jig area. Significant reduction of hutch water requirement. Increased handling capacity per unit of jig area. Low power pulsing mechanism.
In terms of dredge design and operation these features mean:
Simplified distribution system. Ability to handle coarser feed material. Improved recovery of fine grains. Improved performance under overload conditions. Smaller total treatment plant area. Reduced total height of treatment plan. Reduced running cost because of no or minimal hutch water requirement and low power jig drive. 21
Stan St anda dard rd JI JIG G ran ran e
IHC JIG installations are available in various types. The standard JIGs are suitable for separating a wide range of minerals. Out company specialist will be glad to help you with advice on the application of the most appropriate JIG installation.
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Stan St anda dard rd JI JIG G ran ran e
IHC JIG installations are available in various types. The standard JIGs are suitable for separating a wide range of minerals. Out company specialist will be glad to help you with advice on the application of the most appropriate JIG installation.
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Stan St anda dard rd JI JIG G ran ran e
Type
Length
Breath Breath
Height Height
Length of skid
Breath Breath of skid
(m)
(m)
(m)
(m)
(m)
JL-01-E
6.50
2.10
5.50
4.35
1.70
JL-02-E
7.20
4.00
5.50
5.00
2.45
JL-03-E
9.70
6.10
10.00
7.10
3.60
JL-04-E
11.50
6.10
10.00
8.80
3.60
JL-05-E
13.00
6.10
10.60
10.20
3.60
JL-06-E
16.30
4.60
10.60
10.20
4.00
JL-6/2-E
16.30
7.90
10.60
10.20 / 4.00
4.00 / 3.50
JL-6/4-E JL -6/4-E 1
16.30
8.70
10.60
10.20 / 6.50
4.00 / 4.00
JL-6/4-E JL -6/4-E 2
18.00
8.70
10.60
10.20 / 6.50
4.00 / 4.00
JL-6/6-E
18.00
8.70
10.60
10.20 / 8.20
4.00 / 4.00
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Stan St anda dard rd JI JIG G ran ran e
Type
Length
Breath Breath
Height Height
Length of skid
Breath Breath of skid
(m)
(m)
(m)
(m)
(m)
JL-01-E
6.50
2.10
5.50
4.35
1.70
JL-02-E
7.20
4.00
5.50
5.00
2.45
JL-03-E
9.70
6.10
10.00
7.10
3.60
JL-04-E
11.50
6.10
10.00
8.80
3.60
JL-05-E
13.00
6.10
10.60
10.20
3.60
JL-06-E
16.30
4.60
10.60
10.20
4.00
JL-6/2-E
16.30
7.90
10.60
10.20 / 4.00
4.00 / 3.50
JL-6/4-E JL -6/4-E 1
16.30
8.70
10.60
10.20 / 6.50
4.00 / 4.00
JL-6/4-E JL -6/4-E 2
18.00
8.70
10.60
10.20 / 6.50
4.00 / 4.00
JL-6/6-E
18.00
8.70
10.60
10.20 / 8.20
4.00 / 4.00
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Stan St anda dard rd JI JIG G ran ran e
JL-01-E 20 cu.m/hr
JL-02-E 40 cu.m/hr
JL-03-E 55 cu.m/hr
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Stan St anda dard rd JI JIG G ran ran e
JL-01-E 20 cu.m/hr
JL-02-E 40 cu.m/hr
JL-03-E 55 cu.m/hr
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Stan St anda dard rd JI JIG G ran ran e
JL-04-E 75 cu.m/hr
JL-05-E 95 cu.m/hr
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Stan St anda dard rd JI JIG G ran ran e
JL-04-E 75 cu.m/hr
JL-05-E 95 cu.m/hr
25
Stan St anda dard rd JI JIG G ran ran e
JL-06-E 115 cu.m/hr
JL-6/2-E 150 cu.m/hr
26
Stan St anda dard rd JI JIG G ran ran e
JL-06-E 115 cu.m/hr
JL-6/2-E 150 cu.m/hr
26
Stan St anda dard rd JI JIG G ran ran e
JL-6/4-E1 190 cu.m/hr
JL-6/4-E2 190 cu.m/hr
27
Stan St anda dard rd JI JIG G ran ran e
JL-6/4-E1 190 cu.m/hr
JL-6/4-E2 190 cu.m/hr
27
Stan St anda dard rd JI JIG G ran ran e
JL-6/6-E 225 cu.m/hr
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Stan St anda dard rd JI JIG G ran ran e
JL-6/6-E 225 cu.m/hr
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