OPERATIONAL PERFORMANCE


Production of saleable metals

Norilsk Nickel Group’s saleable metals productionTotal amounts may vary from the sum of numbers due to arithmetical rounding. The total operating results of Nkomati are not included in the total performance of the Group.
Asset
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Total nickel, t
300,340
285,292
274,248
266,406
235,749
217,112
218,770
228,687
235,709
193,006
from the Company’s own Russian feed
223,153
219,273
223,224
220,675
196,809
210,131
216,856
225,204
232,532
189,945
from third-party feed
77,187
66,019
51,024
45,731
38,940
6,981
1,914
3,482
3,177
3,061
Total copper, t
363,764
371,063
368,008
369,426
360,217
401,081
473,654
499,119
487,186
406,841
from the Company’s own Russian feed
344,226
345,737
345,897
352,766
344,482
397,774
473,515
498,838
486,816
406,815
from third-party feed
19,538
25,326
22,111
16,660
15,735
3,307
139
281
370
26
Total palladium, koz
2,732
2,662
2,752
2,689
2,618
2,780
2,729
2,922
2,826
2,616
from the Company’s own Russian feed
2,624
2,529
2,582
2,575
2,526
2,728
2,729
2,919
2,820
2,616
from third-party feed
108
133
170
114
92
52
0
3
6
0
Total platinum, koz
683
650
662
656
644
670
653
702
695
641
from the Company’s own Russian feed
658
604
595
610
610
650
653
700
693
641
from third-party feed
25
46
67
46
34
20
0
2
2
0
NORILSK DIVISION AND KOLA MMC
Nickel, t
233,632
231,798
228,438
222,016
182,095
157,396
158,005
166,265
172,357
145,817
Norilsk Division (from Company feed)
124,000
122,700
122,390
96,916
50,860
0
0
0
0
0
Kola MMC
109,632
109,098
106,048
125,100
131,235
157,396
158,005
166,265
172,357
145,817
from the Company’s own Russian feed
99,153
96,573
100,834
123,335
126,937
155,110
157,519
166,265
172,357
145,817
Copper, t
352,466
359,102
354,943
355,707
350,619
387,640
436,201
442,682
422,031
337,120
Norilsk Division (from Company feed)
295,610
296,760
297,552
292,632
280,347
306,859
353,131
355,706
351,413
315,511
Kola MMC
56,856
62,342
57,391
63,075
70,272
80,781
83,070
86,976
70,618
21,609
from the Company’s own Russian feed
48,616
48,977
48,345
60,134
63,542
78,587
82,987
86,976
70,618
21,609
Palladium, koz
2,628
2,580
2,660
2,606
2,554
2,738
2,671
2,868
2,809
2,587
Norilsk Division (from Company feed)
1,989
2,006
2,065
1,935
1,703
956
987
1,042
1,180
1,058
Kola MMC
639
574
595
671
851
1,782
1,684
1,826
1,630
1,529
from the Company’s own Russian feed
635
523
517
640
815
1,737
1,684
1,826
1,630
1,529
Platinum, koz
660
627
627
622
622
660
642
690
691
634
Norilsk Division (from Company feed)
529
504
500
488
449
259
260
251
302
271
Kola MMC
131
123
127
134
173
401
381
439
390
363
from the Company’s own Russian feed
129
100
95
122
159
385
381
439
390
363
NORILSK NICKEL HARJAVALTA (FINLAND)
Nickel, t
45,518
44,252
42,603
43,479
53,654
59,716
60,765
62,422
63,352
47,189
from the Company’s own Russian feed
0
0
0
424
19,012
55,021
59,337
58,939
60,175
44,128
Copper, t
1,006
6,549
10,629
13,048
9,598
13,441
18,036
12,948
2,491
1,923
from the Company’s own Russian feed
0
0
0
0
593
12,328
17,980
12,667
2,121
1,897
Palladium, koz
21
39
74
78
64
42
58
54
17
30
from the Company’s own Russian feed
0
0
0
0
8
35
58
51
11
29
Platinum, koz
9
16
31
33
22
10
11
12
4
7
from the Company’s own Russian feed
0
0
0
0
2
6
11
9
2
7
TRANS-BAIKAL DIVISIONThe Group owns 50.01% in Bystrinsky GOK. The operating results show metals contained in concentrate for sale assuming a 100% ownership by the Group while total operating results include Bystrinsky GOK’s full performance. Bystrinsky GOK was commissioned in 2019.
Copper (in concentrate), t
19,417
43,489
62,664
67,798
Gold (in concentrate), koz
89
177
241
258
Iron ore concentrate, kt
346
1,311
2,046
2,582
NORILSK NICKEL NKOMATI (SOUTH AFRICA)The Company owns 50% in Nkomati. The operating results show metals contained in concentrate for sale assuming a 50% ownership and are not consolidated in the Group’s total operating results. In 2019, the Group and African Rainbow Minerals, its partner in the project, decided to close the project, which was eventually put on care and maintenance in Q2 2021 due to termination of operations.
Nickel, t
9,624
11,920
11,359
11,350
8,486
8,006
6,597
6,485
5,839
795
Copper, t
4,594
5,034
4,938
5,301
4,007
4,504
3,055
3,419
2,877
465
Palladium, koz
32
46
48
53
40
46
33
33
30
5
Platinum, koz
12
20
19
20
15
20
13
14
13
2
NORILSK NICKEL TATI (BOTSWANA)The sale of the asset was closed on 2 April 2015.
Nickel, t
12,215
6,416
3,207
911
Copper, t
10,292
5,412
2,436
671
——
Palladium, koz
83
43
18
5
Platinum, koz
14
7
4
1
LAKE JOHNSTON (AUSTRALIA)
Nickel, t
8,975
2,826
Group ore output (mln t )
Asset
2019
2020
2021
Assets in Russia (copper-nickel sulphide ores)
26.3
26.5
24.62
Norilsk Division
18.4
18.8
17.5
Kola Division
7.9
7.7
7.2
Assets in Russia (gold-iron-copper ores)
10.5
16.0
16.6
Trans-Baikal Division
10.5
16.0
16.6
Average metal content in mined ore
Asset
2019
2020
2021
NICKEL (%)
Norilsk Division
1.32
1.30
1.20
Kola Division
0.55
0.53
0.57
COPPER (%)
Norilsk Division
2.24
2.27
2.09
Kola Division
0.24
0.24
0.25
Trans-Baikal Division
0.60
0.60
0.50
PGMS (G/T)The PGMs include palladium, platinum, rhodium, ruthenium, and iridium.
Norilsk Division
6.89
6.89
6.69
Kola Division
0.10
0.10
0.29
Metals recovery in concentration (%)
Asset
2019
2020
2021
NICKEL
Norilsk DivisionMetals recovery into bulk concentrate.
83.1
84.8
84.3
Kola Division (Kola MMC)
67.9
62.9
67.7
COPPER
Norilsk DivisionMetals recovery into bulk concentrate.
95.2
95.1
95.5
Kola Division (Kola MMC)
73.2
71.8
76.8
Trans-Baikal Division
87.7
87.4
86.9
PGMS
Norilsk DivisionMetals recovery into bulk concentrate.
85.2
86.4
85.6
Metals recovery in smelting (%)
Asset
2019
2020
2021
NICKEL
Norilsk DivisionFeedstock to finished products.
94.6
94.1
94.4
Kola Division (Kola MMC)In refining, converter matte to finished products.
97.0
96.3
98.3
Kola Division (NN Harjavalta)In refining, converter matte to finished products.
97.9
98.2
98.1
COPPER
Norilsk DivisionFeedstock to finished products.
94.1
94.6
95.1
Kola Division (Kola MMC)In refining, converter matte to finished products.
96.5
95.4
99.5
Kola Division (NN Harjavalta)In refining, converter matte to finished products.
99.8
99.8
99.8
PGMS
Norilsk DivisionFeedstock to finished products.
95.8
96.4
96.5
Kola Division (Kola MMC)In refining, converter matte to finished products.
91.6
92.9
92.9
Kola Division (NN Harjavalta)In refining, converter matte to finished products.
99.8
99.9
99.9
Seleable metals production
Product
2019
2020
2021
GROUP TOTAL
Nickel, kt
228.7
235.7
193.0
from own feed
225.2
232.5
189.9
Copper, kt
499.1
487.2
406.8
from own feed
498.8
486.8
406.8
Palladium, koz
2,922
2,826
2,616
from own feed
2,919
2,820
2,616
Platinum, koz
702
695
641
from own feed
700
693
641
ASSETS IN RUSSIA
Nickel, kt
166.3
172.4
145.8
Copper, kt
486.2
484.7
404.9
Palladium, koz
2,868
2,809
2,587
Platinum, koz
690
691
634
NORILSK NICKEL HARJAVALTA (FINLAND)
Nickel, kt
62.4
63.4
47.2
Copper, kt
12.9
2.5
1.9
Palladium, koz
54
17
30
Platinum, koz
12
4
7
Norilsk Division

The Norilsk Division is the Group’s flagship asset boasting a full metals production cycle from ore mining to the shipment of finished products to customers. The Norilsk Division includes the Company’s two major production assets – the Polar Division and Medvezhy Ruchey (100% stake), as well as a number of transport and support assets. The Norilsk Division’s assets are located on the Russian Taimyr Peninsula – in the Norilsk Industrial District in the north of the Krasnoyarsk Region in the Arctic Circle, and linked to other regions by the Yenisei River, the Northern Sea Route, and by air.

The Norilsk Division operates the largest deposits in the Company’s portfolio: Talnakhskoye and Oktyabrskoye, as well as the Norilsk-1 deposit, with a combined annual output of over 17 mln t of copper-nickel sulphide ore.

In 2021, the Norilsk Division accounted for 78% of copper and 41% of PGMs in the Group’s total finished products.

Mining production

The Norilsk Division mines copper-nickel sulphide ores of three grades: high-grade ores with a higher content of base and precious metals; cuprous ores with a higher copper content as compared to nickel; and disseminated ores with a lower content of all metals.

The Polar Division of the Norilsk Division develops the Talnakhskoye and Oktyabrskoye deposits through underground mining at the Taimyrsky, Oktyabrsky, Komsomolsky, Skalisty, and Mayak Mines. The mines deploy slicing and room-and-pillar methods with the cut-and-fill system. Stopes are refilled with backfill mixtures, with their composition adjusted in each case depending on technological requirements for mine backfill durability.

The Norilsk-1 deposit is developed by the Zapolyarny Mine (Medvezhy Ruchey – South Cluster project), through open-pit and underground mining. Underground mining is carried out through sublevel (level) caving using front ore passes and self-propelled vehicles.In 2021, total ore production by the Norilsk Division was 17.5 mln t, down 1.4 mln t y-o-y (–7%). High-grade and disseminated ore production decreased by 19% and 3%, respectively, while production of cuprous ores increased by 1%. The year-on-year decrease in production was caused by the temporary suspension of operations at the Oktyabrsky and Taimyrsky Mines due to flooding by groundwater. Both mines have currently resumed their operations in full.

Ore output (mln t)
Deposit/mine, ore type
2019
2020
2021
Total ore
18.42
18.82
17.46
high-grade
7.35
7.48
6.07
cuprous
5.75
5.49
5.55
disseminated
5.32
5.85
5.84
Oktyabrskoye deposit
9.45
9.58
7.39
Oktyabrsky Mine (underground)
5.37
5.34
4.79
high-grade
0.88
0.80
0.58
cuprous
3.38
3.41
3.41
disseminated
1.11
1.13
0.80
Taimyrsky Mine (underground)
4.08
4.24
2.60
high-grade
4.08
4.24
2.60
Talnakhskoye and Oktyabrskoye deposits
7.34
7.55
7.98
Komsomolsky Mine (underground)
4.00
4.25
4.26
high-grade
0.10
0.14
0.35
cuprous
2.28
1.81
1.85
disseminated
1.62
2.30
2.06
Skalisty Mine (underground)
2.34
2.54
2.79
high-grade
2.25
2.27
2.50
cuprous
0.09
0.27
0.29
Mayak Mine (underground)
1.00
0.76
0.93
high-grade
0.04
0.03
0.04
disseminated
0.97
0.73
0.89
Norilsk-1 deposit
1.63
1.69
2.09
Zapolyarny Mine (open-pit/underground)
disseminated
Since 2020, the Company has been implementing the Technology Breakthrough 2.0

Project portfolio aimed at shifting to safe, green and efficient digital operation driven by innovation, big data analytics and unmanned mining technology. Nornickel was the first Russian company to put unmanned autonomous haul trucks into commercial operation at the Skalisty Mine in 2021.

Concentrators

CONCENTRATION


Talnakh Concentrator

Processes high-grade, cuprous and disseminated ores from the Oktyabrskoye and Talnakhskoye deposits to produce nickel-pyrrhotite and copper concentrates, and metal-bearing products. The key processing stages include crushing, milling, flotation, and thickening.

Talnakh Concentrator has successfully tested the Digital Twin of a Flotation Operator
automating
80%
of processes

Its automation algorithms generate recommendations for the ore flotation process in real time to increase metal recovery into concentrate. The project also uses machine vision to monitor ore sizes on several conveyors before it is fed into a semi-autogenous grinding mill, which is essential for optimal grinding control.

Norilsk Concentrator

Processes all disseminated ores from the Norilsk-1 deposit, cuprous and disseminated ores from the Oktyabrskoye and Talnakhskoye deposits, and low-grade ores from Copper Plant to produce nickel and copper concentrates. The key processing stages include crushing, milling, flotation, gravity concentration, and thickening.

The resulting thickened concentrates from Talnakh Concentrator and Norilsk Concentrator are transported via slurry pipelines to the metals operations of the Norilsk Division for further processing. In 2021, the Company’s concentration facilities processed a total of 16.5 mln t across all types of ore feedstocks.

In 2021, Talnakh Concentrator decreased its ore processing by 7% to 10.1 mln t due to a temporary decline in production caused by the flooding of the Taimyrsky and Oktyabrsky Mines. Recovery of nickel from ore into bulk flotation concentrate, including the output of metal-bearing pyrrhotite product, remained almost flat year-on-year at 87.4% (down 0.5%).

In 2021, the Norilsk Concentrator reduced its ore processing to 6.4 mln t, down 1.2 mln t y-o-y, as a result of a temporary suspension of processing operations due to an accident. Recovery of nickel from ore into bulk concentrate was 70.0%, down 0.6% y-o-y, due to the concentrator temporarily shifting to processing (crushing) ores from the Talnakhskoye deposit during and after the accident response.

Ore processing and nickel recovery
НItem
2019
2020
2021
Ore processing, mln t
Talnakh Concentrator
10.7
10.9
10.1
Norilsk Concentrator
7.5
7.6
6.4
Nickel recovery, %
Talnakh Concentrator
85.9
87.9
87.4
Norilsk Concentrator
71.3
70.6
70.0
In 2021, total ore production by the Norilsk Division was
17.46 mln t
In 2021, the Norilsk Division accounted
for 78% of copper
in the Group’s total finished products.
Norilsk Concentrator

Smelting

DOWNSTREAM FACILITIES


Production chain

The produced concentrates, including steam cured sulphide concentrate, secondary materials, and metal-bearing feed from Kola MMC, are fed into flash smelting furnaces at Nadezhda Metallurgical Plant. Steam cured sulphide concentrate is leached at the hydrometallurgical shop of Nadezhda Metallurgical Plant from products with low metal content, such as Talnakh Concentrator’s metal-bearing products, products from Nadezhda Metallurgical Plant’s tailings facility, and concentrates from tailings ponds. The matte produced in flash smelting furnaces is then converted into high-grade converter matte.

Copper Plant processes all of the copper concentrate from the Company’s concentrators and also a copper cake with Norilsk Nickel Harjavalta to obtain copper cathodes, elemental sulphur, and sulphuric acid for the operational needs of the Norilsk Division.

Copper Plant’s metallurgical shop recycles sludge from the copper tankhouses of Copper Plant and Kola MMC to produce precious metal concentrates, commercial selenium, and tellurium.

The precious metals produced by the Norilsk Division are refined at Krastsvetmet and Urals’ Innovative Technologies under tolling agreements.

The decrease in copper and PGM output in 2021 was caused by the temporary suspension of operations at Norilsk Concentrator due to an accident, and at two mines due to flooding.

Production volumes
Products
2019
2020
2021
Copper, t
355,706
351,413
315,511
Palladium, koz
1,042
1,180
1,058
Platinum, koz
251
302
271

Products

  • Copper cathodes
  • Nickel converter matte sent for processing to Kola MMC
  • Precious metal concentrates
  • Commercial sulphur, selenium
  • Tellurium ingots
Copper Plant
Kola Division

The Kola Division includes Kola MMC, Nornickel’s wholly owned subsidiary. The Kola Division is another key production asset of the Company in Russia, which is located on the Kola Peninsula in the Murmansk Region.

In 2021, Kola MMC accounted for 76%, 5% and 58% of the Group’s total nickel, copper, and PGM finished products, respectively.

Mining production

Kola MMC mines disseminated copper-nickel sulphide ores at four deposits: Zhdanovskoye, Zapolyarnoye, Kotselvaara, and Semiletka.

Kola MMC uses various ore mining methods. The Zhdanovskoye and Zapolyarnoye deposits use three mining methods: gravity caving with front ore passes, sublevel caving with room-and-pillar ore removal, and room-and-pillar mining. The Kotselvaara and Semiletka deposits primarily use stoping from sublevel drifts and sublevel caving. Room-and-pillar short-hole and long-hole stoping is also used on a limited scale.

In 2021, Kola MMC produced 7.2 mln t of ore (down 6% y-o-y). The decrease in ore production was due to the fact that the concentrator stopped processing off-balance (sub-economic) ores from the open-pit section to enhance the technical and economic performance in producing sulphide concentrate.

Ore output (mln t)
Deposit/mine
2019
2020
2021
Total ore
7.91
7.65
7.16
Zhdanovskoye deposit:
7.25
7.08
6.55
  • Severny Mine (underground section)
6.49
6.43
6.48
  • Severny Mine (open-pit section)
0.77
0.65
0.07
Zapolyarnoye deposit:
0.06
0.05
0.03
  • Severny section (underground)
0.06
0.05
0.03
Kotselvaara and Semiletka deposits:
0.60
0.52
0.58
  • Kaula-Kotselvaara mine (underground)
0.60
0.52
0.58

Concentration

CONCENTRATION FACILITIES

The concentrator produces nickel sulphide concentrate, which is then sold via third parties or partially shipped to the Norilsk Division for further processing. In 2021, the concentrator processed 7.1 mln t of ore.

Ore processing, (mln t)
Item
2019
2020
2021
Ore processing, mln t
7.60
7.96
7.11
THE CONCENTRATION PLANT SUCCESSFULLY TESTED EXPRESS METHODS TO ASSESS ORE DRESSABILITY BY MEASURING THE ORE’S MAGNETIC PROPERTIES WITH A FERROMETER AND DETERMINING DISSEMINATION, WHICH GOING FORWARD WILL BOOST THE RECOVERY RATES FOR NON-FERROUS METALS.
Zapolyarny Concentrator

Smelting

DOWNSTREAM FACILITIES (Monchegorsk)

In 2021, Kola MMC used only Nornickel’s own Russian feedstock in metals production. The decrease in saleable nickel and PGM production was primarily caused by lower supplies of raw materials from the Norilsk Division due to the temporary suspension of operations at the Oktyabrsky and Taimyrsky Mines, and at Norilsk Concentrator. The decrease in saleable copper output was due to the closure of the copper shop in March 2021.

The precious metals produced by the Kola Division are refined at Krastsvetmet and Prioksky Plant of Non-Ferrous Metals under tolling agreements.

Production volumes
Products
2019
2020
2021
Nickel, t
166,265
172,357
145,817
from own Russian feed
166,265
172,357
145,817
Copper, t
86,976
70,618
21,609
from own Russian feed
86,976
70,618
21,609
Palladium, koz
1,826
1,630
1,529
from own Russian feed
1,826
1,630
1,529
Platinum, koz
439
390
363
from own Russian feed
439
390
363

Products:

  • Nickel cathodes
  • Nickel carbonyl
  • Copper cathodes
  • Copper concentrate
  • Sulphide concentrate from the concentrator
  • Electrolytic cobalt
  • Cobalt concentrate
  • Precious metal concentrates
  • Sulphuric acid
  • Crushed matte and converter matte for Haijavalta
NORNICKEL SUCCESSFULLY TESTED THE CHEMICAL AND METALLURGICAL SHOP EQUIPMENT TO PERFORM EXPRESS ANALYSIS OF REUSED WATER FOR RHODIUM CONTENT. THE COMPANY ALSO DEPLOYED ULTRA M PRO BY DISTRAN, A DEVICE TO DETECT GAS LEAKS, WHICH REDUCES MECHANICAL ENERGY LOSSES IN PROCESS PIPELINES AND UTILITIES.
Metallurgical shop
Norilsk Nickel Harjavalta (Finland)

Norilsk Nickel Haijavalta located in Haijavalta, Finland, is Nornickel’s wholly owned subsidiary, acquired by the Group in 2007. The Haijavalta is apart of the Kola Duvision and processes Nornickel’s Russian feedstock and nickel-bearing raw materials sourced from third-party suppliers.

Founded in 1959, it is Finland’s only nickel refinery and one of the largest nickel producers in Europe. Harjavalta’s capacity is 66 ktpa of nickel products.

The facility uses sulphuric acid leaching with metal recovery rates above 98%, which is a best practice in the global mining and metals industry.

In 2021, Norilsk Nickel Haijavalta accounted for 24%, 1% and 1% of the Group’s total nickel, copper and PGM finished products, respectively.

Smelting

During 2021, Norilsk Nickel Harjavalta mainly processed nickel feed from Kola MMC’s refining operations. Third-party feedstocksand nickel salts from other suppliers, were supplied regularly in small amounts throughout 2021. Metal recovery remained high.

In 2021, Norilsk Nickel Harjavalta reduced its nickel production by 26% due to lower supplies of nickel concentrate from Kola MMC. The production of copper in copper cake totalled 1.9 kt, down 23% y-o-y, while the output of saleable palladium and platinum in copper cake increased by 43% y-o-y. The increase was due to increased supplies of crushed converter matte to match operational needs.

Production volumes
Products
2019
2020
2021
Nickel, t
62,422
63,352
47,189
from the Company’s own Russian feed
58,939
60,175
44,128
Copper (in copper cake), t
12,948
2,491
1,923
from the Company’s own Russian feed
12,667
2,121
1,897
Palladium (in copper cake), koz
54
17
30
from the Company’s own Russian feed
51
11
29
Platinum (in copper cake), koz
12
4
7
from the Company’s own Russian feed
9
2
7
Facility’s process chart
Trans-Baikal Division

The Trans-Baikal Division includes Bystrinsky GOK, the construction of which was started by Nornickel in 2013 (put into commercial operation in 2019). In 2021, Bystrinsky GOK reached its design capacity.In 2021, the Trans-Baikal Division produced 17% of the Group’s total copper output.

17%
In 2021, the Trans-Baikal Division produced 17% of the Group’s total copper output

Mining production

Bystrinsky GOK mines gold-iron-copper ores of the Bystrinskoye deposit.

Ore output (mln t)
Mining asset
2019
2020
2021
Total ore
10.49
16.04
16.55
Bystrinskoye deposit:
10.49
16.04
16.55
Verkhne-Ildikansky open-pit mine
8.60
11.57
13.34
Bystrinsky-2 open-pit mine
1.89
4.47
3.21

Concentration

CONCENTRATION FACILITIES

The facility processes ores of the Bystrinskoye deposit into copper, iron ore and gold concentrates. Its key processing stages include crushing, milling, flotation, thickening, filtration, and end product packaging. The concentrator has two processing lines. In 2021, it processed 10.47 mln t of ore (2019: 9.76 mln t). The increase was due to scheduled ramp-up to design capacity.

Copper and iron ore concentrates are sold via third parties, while gold concentrates are further processed at the Norilsk Division.

Production volumes
Products
2019
2020
2021
Ore processing, mln t
7.50
9.76
10.47
Copper (in copper concentrate), t
43,489
62,663
67,798
copper content in the concentrate, %
25.50
24.65
22.87
Gold (in copper and gold concentrates), koz
177
241
258
gold content in the concentrate, g/t
4,034
3,050
2,627
Iron ore concentrate, kt
1,311
2,047
2,582
iron content in the concentrate, %
64.60
64.22
63.72

Products:

  • Copper concentrate
  • Gold concentrate
  • Iron ore concentrate
A PROJECT TO OPTIMISE FLOTATION PROCESSES USING THE DIGITAL TWIN OF A FLOTATION OPERATOR (TALNAKH CONCENTRATOR) WAS PILOTED AT BYSTRINSKY GOK.

The pilot was rated as successful, and in 2022 we plan to conduct repeat testing of the system using video analytics of the foam layer in flotation cells and measuring metrics such as froth floatation speed, bubble size and foam color in real time.

Bystrinsky GOK