Low Res Courier 5i SL and Courier 6
Low Res Courier 5i SL and Courier 6
Low Res Courier 5i SL and Courier 6
Timeliness of assays
Sampling and analysis are performed unattended in the same consistent way around the clock. This creates savings in assaying costs and metallurgical sampling. upsets are detected early and solved rapidly. Frequent assays are necessary for real-time process monitoring and control.
The speed of accurate assaying provided by the Courier on-stream analyzers enables an immediate reaction to changes in the metallurgical behavior of the flotation circuit while monitoring the effect of such a reaction in real time. Frequent manual sampling, sample preparation and laboratory assays, as required for 24/7 real-time process control, is prohibitively expensive in terms of manpower and equipment. If assays are based on strongly filtered or averaged measurements over a long period, they cannot be used for process control. A long time delay between actual process changes and the control action makes feedback control unstable and reported process trends misleading.
Concentrate quality is controllable and undesired variations are minimized. Plant operation is optimized with smaller circulating loads resulting in higher
throughput. Taking into account sampling and sample preparation, assay accuracy is comparable with a routine manual sample-laboratory procedure as Courier on-stream analyzers use the same wavelength dispersive X-ray fluorescence (WDXRF) technology as highperformance laboratory analyzers. are readily available, which motivates and speeds up process development. be easily upgraded and expanded as plant requirements change.
Encrypted virtual private network (VPN) trough rewall with anti-virus engine
Analyzer network
Process
PSI 300
Courier
Courier
Sampling and Local analyzer control user interface PCS 6750 CLI 6700
Local Sampling and Analyzer analyzer control user interface probe CLI 6700 PCS 6750 PRS 4011
Analyzer network The local Courier user interface displays the assays, trends and analyzer status information. It can also be used to set up and modify the operation of the Courier analyzer. The local user interface collects analyzer system calibration and diagnostic data for local and remote support. Log and scheduled assay reports can be generated in the user interface PC and shared through the plant network with operators and metallurgists.
Several Courier analyzers can be networked to share common remote user interface PCs. Local and remote user interface operation are very similar in order to minimize learning and configuration time. Outotec's Outocal calibration program can run on one of the networked PCs to access calibration data and calculate the best models for assay calculations. Two redundant process control system connections are available at the analyzer electronics for good availability of assays.
Main Feed
TankCell
Rougher Feed
TankCell
TankCell TankCell
Rougher Tails
TankCell
TankCell
Scavenger Tails
Flotation Tails
AT
AT
AT
AT
Scavenger Concentrate
AT
AT
Primary Rougher Concentrate
TankCell
AT
Rougher Concentrate
TankCell TankCell
AT
AT
Middling Tails
Cleaner Tails
AT
TankCell
Final Concentrate
AT
concentrate grade helps to produce high-grade concentrate, which is easy to clean or mix directly with final concentrate, providing significant overall recovery improvement.
FrothMaster 2 froth cameras are used to complement Courier assays to optimize concentrate pull in each cell in a row.
Cleaner control Maintaining final product quality is critical, while keeping an eye on circulating loads in the cleaner section. The Courier system is able to measure low assays of penalty elements in the presence of a high main element grade to ensure consistent production of the best quality concentrate. Scavenger control Since the rougher tails are already controlled based on the Courier assays, the scavengers simply lower the final tails assay. Accurate tails assay measurement is important for recovery monitoring and requires a highly sensitive and accurate analyzer. The scavenger concentrate assay is monitored to keep the circulation load under control. Flotation circuit control Typical basic control loops used in flotation are illustrated below. Successful assay control requires that the key operating parameters of a flotation machine are managed. Basic control loop setpoints are determined by the process operator or an expert system. The Outotec Advanced Control Tools package (ACT) can be used to optimize circuit operation. See left for an example of a typical grade-recovery optimization scheme.
Controller for flotation machine slurry level and air feed to each mechanism. Exact level control optimizes slurry level control in a row of machines. CellStation controller for flotation machine slurry level and air feed to each mechanism. Exact level control optimizes slurry level control in a row of machines.
Air
Air
FIC
Level
Air
FIC
Level
FIC
Level
LIC
TankCell TankCell
LIC
TankCell
LIC
The operation of each flotation cell in a rougher row is balanced by froth speed measurements to meet rougher concentrate grade target with best possible recovery.
Depending on the process requirements, the primary sample flow can be continuous, with or without automatic periodic flushing. Alternatively, the sample flow can be stopped and the delivery line flushed automatically between measurements. This improves sample availability if the slurry contains trash, oversize particles or it forms deposits. Controlled primary sampling is a standard feature in the Courier analyzers.
Assaying Secondary sampling The Courier 5i and 6i SL analyzer probes combine the The full primary sample flow is switched between bypass and level controlled analyzer feed tank by a two-way air cylinder actuated sample hose. The same cylinder moves the hose in opposite direction across a cutter, at programmable intervals in order to collect a representative composite sample. Trash is removed from the samples by self-cleaning screens and entrained air is minimized in a level-controlled constant head feed tank. The tank provides a stable sample flow to the analyzer flow cell. Primary sample availability and flow rate are monitored for diagnostic purposes. The multiplexer is designed to minimize sample changeover times in large systems. While a sample in one multiplexer is being measured, the next sample is already being conditioned in the second multiplexer unit. This allows a fast measurement cycle for all streams. The measurement sequence is fully programmable. For example, critical streams can be measured more frequently and longer measurement time can be used for low grade tailings streams. The switching time between samples is used for internal reference measurements, which are used for monitoring and automatic drift compensation. high-performance wavelength and energy dispersive X-ray fluorescence methods in a unique and cost-effective way. Automatic reference briquette measurements between sample measurements compensate for drift and provide on-line self-diagnostic tool. The analyzer probe contains the core analytical components of the analyzer in an IP56-rated (NEMA 4X-compliant) stainless steel enclosure.
Calibration sampling The built-in calibration sampler enables an operator to take a truly representative and repeatable sample from the actually measured slurry for comparative laboratory assays. The calibration data can be read from the analyzer into a networked PC for the Outocal calibration program. De-multiplexing With high grade samples, optional de-multiplexing can be used to divert the small intermittent 25 l/min measured flow to the desired return line.
User interface The analyzer local user interface panel high resolution touch screen shows the most recent assays, assay trends, sample line and analyzer status information. Some control switches and indicator lamps complement the panel. The sampling and analyzer control cabinet houses interface and control modules for primary and secondary sampling system monitoring and control.
50 thick window
Spectrometer
PES 3450
PCS 6750
X-ray tube
ICM 4300
Filter
Signal preamplifier
Main controller
1 mm sensitive layer Controlled turbulent flow in the sensitive layer provides a representative sample and prevents scaling.
Detector
ICM 4300
EDXRF channel
SAMPLING Expansion controller 3
Expansion controller 2
Wavelength-dispersive technology
The wavelength-dispersive detection channel measures only the narrow element peak (blue). A high-resolution spectrometer separates the peak before it reaches the detector. Nearby element peaks do not overlap and the background signal is minimal. Because the full capacity of the detector is used for the relevant peak only, a highpower X-ray tube can be used and analysis speed and sensitivity are high. Wavelength-dispersive detection is deployed by high-performance laboratory analyzers. Several element-specific wavelength-dispersive channels are used in Courier analyzers for the simultaneous measurement of all critical elements.
Wavelength-dispersive channel WDXRF, 0.12% Zn.
Energy-dispersive technology
The energy-dispersive detection channel (Si(Li), Si-PIN, SDD or proportional counter) measures the whole spectrum (blue). Measuring a small Zn peak (green arrow) is a challenge, since most of the detected counts cannot be used for the specific assay. Limited resolution and its deterioration with count rates above 10 kcounts per second usually limit useful X-ray intensity. Analysis speed and sensitivity are low. Energy-dispersive detectors can be used for less critical measurements of high-grade assays, as a cost-effective complement to wavelength-dispersive detectors. One energy-dispersive detector can measure several element peaks at the same time.
Energy-dispersive channel EDXRF, 0.12% Zn.
Scatter
H
1
He
2
Li
3
B
5
C
6
N
7
O
8
F
9
Ne
10
Na
11
Mg
12
AI
13
14
Si
15
16
17
CI
Ar
18
19
Ca
20
Sc
21
22
Ti
23
Cr
24
Mn
25
Fe
26
Co
27
Ni
28
Cu
29
Zn
30
Ga
31
Ge
32
As
33
Se
34
Br
35
Kr
36
Rb
37
Sr
38
39
Zr
40
Nb
41
Mo
42
Tc
43
Ru
44
Rh
45
Pd
46
Ag
47
Cd
48
In
49
Sn
50
Sb
51
Te
52
53
Xe
54
Cs
55
Ba
56
57-71
Hf
72
Ta
73
W
74
Re
75
Os
76
77
Ir
Pt
78
Au
79
Hg
80
Tl
81
Pb
82
Bi
83
Po
84
At
85
Rn
86
Actinides 89-103
Fr
87
Ra
88
Ac
89
Th
90
Pa
91
92
Np
93
Pu
94
Am Cm
95 96
Bk
97
Cf
98
Es
99
Fm
100
Md
101
102
No Yb
70
103
Lr
Lanthanides 57-71
La
57
Ce
58
Pr
59
Nd
60
Pm
61
Sm
62
Eu
63
Gd
64
Tb
65
Dy
66
Ho
67
Er
68
Tm
69
Lu
71
X-ray fluorescence (XRF) analysis of slurry samples Slurry and air attenuate strongly the low energy XRF signal from light elements. This makes on-line analysis of elements lighter than calcium (Ca) impractical. With flow cell technology, the analysis of heavier elements is possible as the fresh representative sample is brought right onto the surface of the measurement cell window.
Specifications
Analysis method The wavelength-dispersive X-ray fluorescence method uses X-ray tube excitation. Energy-dispersive channels are available. No radioactive isotope sources are used, minimizing exposure, fire and disposal risks. Number of sample streams One Courier 6i SL analyzer system can measure up to 24 sample streams (Courier 5i SL 12 streams). Each multiplexer module handles up to 6 sample streams. Number of simultaneous assays The Courier 5i and 6i SL analyzers can provide up to 12 simultaneous assays for elements from calcium to uranium (atomic numbers 20 to 92) and solids content from each process sample. Assay calculation models can be automatically switched according to changing mineralogy. Sample measurement time The sample measurement time is selectable for each sample, the typical time being 1530 seconds (Courier 5i SL 60 seconds). Analysis cycle The normal analysis cycle for 12 samples is 12 minutes, and 16 minutes for 18 streams (1316 minutes for 12 stream Courier 5i SL), depending on the measuring time for each sample. Assays are calculated and reported based on freshly measured data for a true, real-time analysis. Measurable concentration range The typical measurable concentration range is 0.004% 100% by weight for slurries. Stability The analyzer's short-term stability under the specifified conditions is better than 0.1% relative. Automatic internal reference measurements compensate for long-term drift. Instrument air Minimum detection limit The WDXRF-measurement channel's detection limit is 330 ppm for most elements in slurry samples. Using the EDXRF-measurement channel, the minimum detection limit is typically 100500 ppm. Power supply Single phase AC, 230 V +10%, -15% at 10 A 50/60 Hz or 115 V 10% at 20 A 50/60 Hz. Double conversion 3 kW UPS, 10 minutes minimum (Courier 5i SL 1200 W). Pressure 510 bar (75145 psi) 16 l/min (0.6 norm. cuft/min) average consumption. Installation requirements The Courier 5i and 6i SL analyzers can be installed on one level (lowhead) or two levels. Analyzer has to be protected from direct sunlight preferably in a prefabricated shelter. Flushing water Sand-filtered raw water, 26 bar (3085 psi) average 30 l/min (8 gal/min) peak 100 l/min (26 gal/min). Maintenance The Courier 5i and 6i SL analyzers are designed for minimal maintenance. Analyzer probe window change is automatic, with an Automatic Window Changer option. The analyzer system has built-in self and remote diagnostics capabilities. Continuous training, proactive and corrective service agreements are available. Analyzer calibration An optional integrated calibration sampler takes a repeatable and representative sample for analyzer calibration. The Outocal software is available for interactive calibration model design. Accuracy Outotec's accuracy specification is based on the measurement of flowing slurry samples using measurement times for real applications. Briquette measurements and long measurement times give unrealistic results. Accuracy of measurement is a function of sample parameters such as matrix composition, mineralization and particle size.Typically, under normal operating conditions, a 36% relative standard deviation for minor concentrations, and a 14% relative standard deviation for major concentrations, is achieved for individual slurry sample measurements of concentration levels well above the minimum detection limit.
Operating ambient temperature at sea level +5 +45C (41113F), no condensation. Temperature control is based on an air-cooled chiller.(Courier 5i SL has Peltier cooler) Local and remote operator interfaces up to +32C, with cooling option up to +45C ambient temperature. Storage temperature -25 +60C (-13 140F) Environmental classification Analyzer multiplexers, probe and probe control set, IP56 (designed to meet NEMA 4X).
Water
leak-proof ceiling
Shipping and installed weight The typical total shipping weight is 1000 kg (2200 lbs) for a 12-stream system, and 1250 kg (2750 lbs) for an 18-stream system. Each 6-stream multiplexer unit weighs 225 kg (500 lbs). Primary samplers and sample transportation are not included in the above weights. ISO 9001 quality assurance We are ISO 9001 certified and have a rigorous quality management policy to ensure that the customer's quality expectations are met. The analyzer is certified according to the EMC, LVD and MD directives.
Process ow by gravity
Courier 6
adjustable 1860-2060
5000
Note: These specifications are for a typical configuration and project scope only. Actual scope and performance data vary according to individual plant and project specifications and product variations. Please see the product data sheets and installation manual for details.
LSA sampler
Water
1900
Courier 6
1200
adjustable 18602060
Courier 5i and 6i SL sampling and analyzer system features are covered by several patents and patent applications owned by Outotec Oyj.
900
maximum 3300
1900
Outotec develops and provides technology solutions for the sustainable use of Earths natural resources. As the global leader in minerals and metals processing technology, Outotec has developed over decades several breakthrough technologies. The company also offers innovative solutions for the chemical industry, industrial water treatment and the utilization of alternative energy sources. Outotec shares are listed on the NASDAQ OMX Helsinki.