PROCESS DEVELOPMENT 1
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1 PROCESS DEVELOPMENT 1
2 VISÃO GERAL DO PROCESSO 1 espessador 90 m(flsmidth) t/h * 8 loops com 2 válvulas cada 3 prensas de rolos 26 x 42 (Polysius) t/h/und * km 2 grelhas vibratórias (Metso) t/h/und * 2 britadores Mandíbula C140 (Metso) 557 t/h/und * 32 ciclones 33 (Krebbs) 618 m³/h/und * 1 espessador 50 m (Flsmidth) t/h * 4 peneiras tipo banana MF-12 x28 DD (Metso) t/h/und * 4 britadores cônicos HP500 (Metso) 617 t/h/und * 2 moinhos bolas 26 x 42 (Metso) t/h/und * 22 células de flotação 160m³ 5 estágios (Flsmidth) 88 deslam. prim m³/h/und * 480 deslam. sec m³/h/und * (Krebbs) 32 ciclones 20 (Krebbs) 131 m³/h/und * 32 ciclones 20 (Krebbs) 131 m³/h/und * Recuperação de água 8+2 bombas deslocamento positivo TZPM 2000 (Weir GEHO) 263 m³/h/und * 20,6 MPa 1 espessador 57 m (Flsmidth) t/h * km 1 clarificador 50 m (Flsmidth) 50 t/h * Mar 11+1 Ceramec (Larox) 144 m² 255 t/h/und * 16 Vertimills VTM-1500 (Metso) 190 t/h/und * km Pilha de estocagem 123,177 m³ Taxa de est t/h Taxa retom t/h 2 pilhas * Capacidade nominal 7+1 bombas deslocamento positivo TZPM 2000 (Weir GEHO) 301 m³/h/und * e 18,3 MPa
3 DEFINE METALLURGICAL PARAMETERS 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL 2 4 GEOMETALLURGICAL MODELLING STANDARD TESTS 1 1 CHECK GEOMETALLURGICAL BLOCK MODEL WITH LARGE SAMPLES (PILOT TESTS) CHECK GEOMETALLURGICAL BLOCK MODEL WITH DRILLHOLE SAMPLES AT MINI PILOT PLANT AND BENCH SCALE TEST 5 3
4 GEOMETALLURGICAL MODELLING - SAMPLING 0 to 5 years Pit 12kg to Standard test. 6 to 10 years Pit 5m (~35kg) 11 to 15 years Pit ~23kg to Pilot tests per period (pit). 4
5 quency Frequency Frequency Frequency Frequency Frequency Frequency Frequency METALLURGICAL PARAMETERS SiO2 (%) rmal ) , Histogram of Fe (%) Normal Histogram Fe (%) of P (%) 100 Histogram of Mn (%) Normal , , ,15 0,30 0,45 Mn (%) Mean 40,22 StDev 7,795 N 433 Mean 0,04429 StDev 0,09179 N 433 0,0 0,60 60 Histogram of Al2O3 (%) Histogram of SiO2 (%) Normal 0,75 1,5 60 Mean 40,22 StDev 7,795 N Mean 0, StDev 0,09179 N Mean 40,34 StDev 11,83 N ,00 3,0 20 0,04 Normal SiO2 (%) Histogram of LOI (%) 0,08 0,12 P (%) 4,5 50 Histogram of P (%) Normal Normal 0,16 6,0 60 Mean 0,02125 StDev 0,01928 N 433 0,20 0, Mean 40,34 StDev 11, N ,5 Mean 0, StDev 0,01928 N ,5 0 0,0 2 Histogram of Al2O3 (%) Normal 1,5 9,0 3,0 4,5 Al2O3 (%) 4 6 LOI (%) Mean 1,313 StDev 1,287 N 433 6,0 Histogram of LOI (%) Normal 8 7,5 Mean 0,4853 StDev 0,8044 N ,0 12
6 STANDARD TESTS SAMPLES TESTED -Reserved to checking: - 70 tests Chemical analyses Size analyses Mineralogical analyses 6
7 1 STANDARD TESTS 7
8 ency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency METALLURGICAL 2 PARAMETERS %) togram of SiO2 PFF respectively) B (%) Histogram and 500 g/t of SiO2 starch. PFF C (%) Normal Histogram of SiO2 PFF B (%) Normal 250 Histogram of SiO2 PFF A (%) Normal Mean 6,143 StDev 10,94 N 433 Mean 200 6,143 StDev 10,94 N FLOTATION Three separated flotation using 100, 140 and 180 g/t of amine (flotation A, B and C, Normal Mean 1,549 StDev 2,899 N 433 Mean 1,549 StDev 250 2,899 N Histogram of SiO2 PFF C (%) Normal Mean 0,8100 StDev 1,431 N 433 Me StD N ,0-12,5 0, ,4 62, ,5 25,0 37,5 SiO2 PFF A (%) 150 Histogram of PFF A (%) Histogram (%) of Al2O3 PFF B (%) Normal 160 Normal , ,8 1,2 1,6 Al2O3 PFF A (%) ,0 62,5 Mean 0,2855 StDev 0,2032 N 433 2, SiO2 PFF B (%) Histogram of Al2O3 PFF C (%) 2,4 Mean 0,2855 StDev 0,2032 N ,0 Normal 0, Histogram of Al2O3 PFF B (%) Normal 0,8 1,2 Al2O3 PFF B (%) Mean 0,2168 StDev 0,1718 N 433 1,6 2, Mean 0,2168 StDev 0, N ,0 0-0,0 0, SiO2 PFF C (%) Histogram Histogram of Al2O3 of Al2O3 PFF C PFF (%) C (%) Normal Normal 12 0,4 0,8 0,8 1,2 1,2 1,6 Al2O3 Al2O3 PFF C (%) PFF C (%) 15 Mean 0,2342 StDev 0,1809 N 433 1,6 2, ,0
9 2 METALLURGICAL PARAMETERS Mineralogy 39,92 1,98 29,56 1,21 0,77 1,55 46,66 0,74 27,81 49,81 9
10 2 METALLURGICAL PARAMETERS PARAMETERS PRESENTED Fe (%); SiO2 (%); Al2O3 (%); P (%); Mn (%); LOI (%); CaO (%); TiO2 (%); MgO (%); K2O (%); Na2O (%) % above 25mm % above 3mm Mineralogy: Specularite (%); Goethite (%); Hematite (%); Quartz (%); Others (%) GRINDING Feed (%): +1000μm; +500μm; +150μm; +75μm; +45μm; -45μm F95 (μm); F80 (μm); F50 (μm) Grinded (%): +1000μm; +500μm; +150μm; +75μm; +45μm; -45μm; P95 (μm); P80 (μm); P50 (μm) Grinding kwh/t (Rowland) REGRINDING Feed (%): +45μm Regrinded (%): +45μm HISTOGRAM AND PROBABILITY PLOT IS AVAILABLE PER EACH PARAMETER DESLIMING Mass Recovery (%) Fe (%); SiO2 (%); Al2O3 (%); P (%); Mn (%); LOI (%); CaO (%); TiO2 (%); MgO (%); K2O (%); Na2O (%) FLOTATION Three separated flotation using 100, 140 and 180 g/t of amine (flotation A, B and C, respectively) and 500 g/t of starch. Froth for 1 minute and then till 10 minutes Mass Recovery (%) Fe (%); SiO2 (%); Al2O3 (%); P (%); Mn (%); LOI (%); CaO (%); TiO2 (%); MgO (%); K2O (%); Na2O (%) Mineralogy to concentrate B: Specularite (%); Goethite (%);Hematite (%); Quartz (%); Others (%) 10
11 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL 11
12 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL Standard test s Amine Consuption (g/t) 12
13 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL PF Standard Test - SiO 2 + Al 2 O 3 13
14 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL PF Standard Test - SiO 2 + Al 2 O 3 > 3,0% 14
15 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL Total entrate Mass SiO2 + Al2O3 >3.0% in standard test: t of ~1bi = 0,014% DRILLHOLE 28 Massa: t DRILLHOLE 148 Massa: t 15
16 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL DRILLHOLE 28: Interval from 63.0m to 78.0m Block mass SiO2+Al2O3> 3.0: t 16
17 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL Grade of SiO 2 e Al 2 O 3 in the 17
18 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL Log description - SEFDSP28 Drill Hole SEFDSP 28 From 49,60 To 74,85 Friable itabirite with levels stronger siliceous. Locally with specularite. Lenses of schists are founded. Comments This interval of friable itabirite with lenses of schist are located closed of shear zone that is characterized by quartz and specularite associated a hydrothermal process. This process and mineralogy (white mica) of schist are probable responsible for values of alumina. The chemical formula is KAL 2 Si 3 AlO 10 (OH,F) 2 and the composition is 11.82% K 2 O, 38,38%Al 2 O3,45,23%SiO 2,4,29%H 2 O 18
19 3 INPUT PROCESS PARAMETERS IN BLOCK MODEL Photos of drillcore box that show lenses of quartz-sericite schist interlayer with friable itabirite. In according with sampling procedure lenses of waste material with thickness less than 1 meter, it is sampling together with itabirite. 19
20 4 Actual Status CHECK GEOMETALLURGICAL BLOCK MODEL WITH DRILLHOLE SAMPLES AT STD TEST AND MINI PILOT PLANT Drillhole A Drillhole C Drillhole B Process parameters variability trough deposit Sample tested RFe = x % RFe = z % According geometallurgical study Sample tested RFe = y % To check An example with iron recovery 20
21 5 CHECK GEOMETALLURGICAL BLOCK MODEL WITH LARGE SAMPLES (PILOT TESTS) Comparison between bench scale test, MPP and pilot test 21
22 MAIN PILOT PLANT RESULTS 22
23 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. 17 Sections Study Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process Global Sapo Sample- IF+ISC 6t Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. MINAS RIO SPECIFIC STUDIES First 5-years pit Program 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 6 to 10 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 11 to 15 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 23
24 17 SECTIONS STUDY Sampling per drillcore: 1 samples for each lithology per drillhole 2) Blending per section Drillcore blending composing a general sample for each lithology per section Bench test program for each sample per section 3) General blending for each litotype Part of sample per section composed a General sample per lithology considering all 17 sections Pilot test Program: - 3 general pilot test (IF, ISC and IC) ~1t per test
25 17 Section Study Standard Test Results Section Recovery (%) Mass Fe Fe Feed Fe STANDARD TEST SiO 2 Feed SiO 2 Al 2 O 3 Feed Grade (%) Al 2 O 3 P Feed P IF.TP 51% 80% 43,69 68,73 33,36 0,59 2,41 0,39 0,041 0,026 0,272 0,209 0,87 0, IF.TP 45% 72% 43,55 68,71 34,84 0,53 1,72 0,44 0,034 0,025 0,121 0,186 0,81 0, IF.TP 36% 71% 34,82 68,43 47,47 0,78 1,47 0,48 0,039 0,045 0,025 0,039 0,89 1, IF.TP 45% 76% 40,87 67,97 37,78 1,07 2,09 0,57 0,045 0,043 0,257 0,252 1,06 0, IF.TP 43% 80% 37,05 69,11 45,21 0,69 1,06 0,19 0,019 0,009 0,059 0,022 0,40 0, IF.TP 52% 85% 42,64 69,02 37,31 0,54 0,87 0,14 0,019 0,013 0,268 0,389 0,44 0, IF.TP 42% 78% 37,34 68,93 44,54 0,73 1,30 0,28 0,017 0,009 0,029 0,035 0,60 0, IF.TP 52% 85% 42,12 69,01 38,64 0,83 0,86 0,31 0,017 0,018 0,020 0,024 0,12 0, IF.TP 58% 84% 47,75 69,06 31,07 0,94 0,26 0,11 0,022 0,013 0,019 0,009 0,26 0, IF.TP 43% 71% 42,59 69,74 37,51 0,47 0,92 0,23 0,018 0,014 0,023 0,031 0,51 0, IF.TP 44% 83% 36,42 69,09 46,45 0,65 1,08 0,35 0,015 0,013 0,010 0,020 0,26 0, IF.TP 50% 86% 40,79 69,30 40,64 0,55 0,70 0,25 0,014 0,011 0,010 0,009 0,20 0, IF.TP 45% 85% 36,36 68,72 46,95 1,40 0,59 0,13 0,010 0,009 0,020 0,029 0,31 0, IF.TP 52% 88% 40,71 69,25 41,29 0,66 0,26 0,17 0,009 0,009 0,020 0,022 0,11 0, IF.TP 62% 92% 45,96 68,30 33,12 2,02 0,64 0,12 0,017 0,009 0,048 0,041 0,30 0, IF.TP 52% 89% 40,42 69,02 41,12 0,75 0,65 0,29 0,012 0,009 0,020 0,026 0,28 0, ISC.TP 30% 63% 32,87 68,53 52,02 0,51 0,73 0,18 0,009 0,010 0,010 0,031 0,10 0, ISC.TP 42% 84% 34,42 68,71 49,67 0,92 0,73 0,35 0,042 0,066 0,024 0,041 0,19 0, ISC.TP 40% 82% 33,01 68,28 52,16 1,84 0,43 0,36 0,010 0,009 0,024 0,037 0,09 0, ISC.TP 35% 68% 34,91 68,22 49,60 0,46 0,35 0,31 0,010 0,013 0,030 0,031 0,04 0, ISC.TP 39% 73% 36,29 69,12 47,26 0,16 0,45 0,26 0,040 0,014 0,079 0,015 0,15 0, ISC.TP 43% 78% 38,04 68,51 43,84 1,37 1,15 0,38 0,019 0,013 0,033 0,009 0,43 0, ISC.TP 37% 82% 30,71 68,51 54,68 1,34 0,86 0,33 0,013 0,010 0,029 0,053 0,34 0, ISC.TP 36% 82% 30,47 68,86 55,71 0,99 0,44 0,34 0,014 0,011 0,079 0,084 0,11 0,01 Global Average 45% 80% 38,49 68,80 43,43 0,87 0,92 0,29 0,021 0,017 0,064 0,069 0,37 0,19 IF Average 48% 81% 40,82 68,90 39,83 0,83 1,06 0,28 0,022 0,017 0,076 0,084 0,46 0,23 ISC Average 38% 77% 33,84 68,59 50,62 0,95 0,64 0,31 0,020 0,018 0,039 0,038 0,18 0,13 Mn Feed Mn LOI Feed LOI 25
26 17 SECTIONS STUDY PILOT TEST - IF Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO2 SiO2 Al2O3 Al2O3 P P LOI LOI 46,8 80,0 39,8 68,0 40,4 0,90 Mass Recovery Metalurgical Recovery Fe Fe SiO2 Minas Rio Pilot Test IF (%) SiO2 47,6 81,5 39,7 68,3 42,3 1,3 0,93 0,11 0,019 0,015 0,42 0,17 Al2O3 Al2O3 P P LOI 26 LOI
27 17 SECTIONS STUDY PILOT TEST - ISC Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 46,8 80,0 39,8 68,0 40,4 0,90 Minas Rio Pilot Test ISC (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 44,2 77,4 35,0 69,2 49,8 0,95 0,64 0,18 0,020 0,020 0,30 0,10 27
28 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. 17 Sections Study Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process Global Sapo Sample- IF+ISC 6t Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. MINAS RIO SPECIFIC STUDIES First 5-years pit Program 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 6 to 10 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 11 to 15 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 28
29 1) Drilling GLOBAL SERRA DO SAPO SAMPLE: A PILOT PROCESSING WITH DEPOSIT S GLOBAL SAMPLE - 6t 6) Regrinding Test 7) Filtering entrate During drilling campaign 6,300 samples, collected in drillcores intervals with 5m, ~35kg each one, were sent to chemical analyses. (6,300 x ~35kg = ~220t) Chemical analyses result: Input Geological model Pilot test at Ouro Preto/BRA 2) Chemical analyses 35kg per sample X-Ray 100g Pilot test at York/USA 3) Anglo ferrous file ~34kg x 6,300 = ~210t avaiable to be tested 4) Blending sample 5) Beneficiation Pilot test: Grinding Desliming flotation (check criterias) samples were blended bulding a representative sample of Serra do Sapo deposit (6t) 29
30 GLOBAL SERRA DO SAPO SAMPLE: A PILOT PROCESSING WITH DEPOSIT S GLOBAL SAMPLE - 6t Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 46,8 80,0 39,8 68,0 40,4 0,90 Minas Rio Pilot Test ISC + IF (%) Mass Metalurgical Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI Recovery Recovery 30 50,2 87,3 39,3 68,5 41,7 0,57 1,05 0,24 0,014 0,021 0,35 0,19
31 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling 17 Sections Study Global Sapo Sample- IF+ISC 6t Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process MINAS RIO SPECIFIC STUDIES Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. First 5-years pit Program 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 6 to 10 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 11 to 15 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 31
32 First 5-years Program Blending of 4t samples from drillcore representing first five years First five years pit Processing in pilot scale evaluating process behavior. Pilot Plant Minas Rio Pilot Test Pit Five Years sample Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 46,8 79,7 40,14 68,40 39,80 1,21 1,25 0,42 0,018 0,015 0,38 0,11 Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 46,8 80,0 39,8 68,0 40,4 0,90 Al 2 O 3 Al 2 O 3 P P LOI LOI 32
33 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling 17 Sections Study Global Sapo Sample- IF+ISC 6t Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process MINAS RIO SPECIFIC STUDIES Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. First 5-years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, representative of 6 to 10 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 11 to 15 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 33
34 6 to 10 years pit Program Blending of 4t samples from drillcore representing first five years 6 to 10 years pit Processing in pilot scale evaluating process behavior. Pilot Plant Minas Rio Pilot Test 6 to 10 Years pit sample Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 47,4 83,5 38,5 67,8 42,5 1,0 1,15 0,31 0,019 0,019 0,21 0,17 Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 46,8 80,0 39,8 68,0 40,4 0,90 Al 2 O 3 Al 2 O 3 P P LOI LOI 34
35 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling 17 Sections Study Global Sapo Sample- IF+ISC 6t Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process MINAS RIO SPECIFIC STUDIES Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. First 5-years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, Pilot test with a global sampling, representative of 6 to 10 years pit representative of 11 to 15 years finished. pit finished. Part of each interval sampled from Part of each interval sampled drillcore sample have been sent to from drillcore sample have been standard test sent to standard test 35
36 11 to 15 years pit Program Blending of 4t samples from drillcore representing first five years 11 to 15 years pit Processing in pilot scale evaluating process behavior. Pilot Plant Minas Rio Pilot Test 11 to 15 Years pit sample Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 46,1 85,1 36,9 68,1 43,8 1,0 1,20 0,33 0,020 0,019 0,58 0,80 Minas Rio Expected (%) Mass Recovery Metalurgical Recovery Fe Fe SiO 2 SiO 2 Al 2 O 3 Al 2 O 3 P P LOI LOI 46,8 80,0 39,8 68,0 40,4 0,90 36
37 CONTENTS MINAS RIO GLOBAL STUDIES Geometallurgical Modelling 17 Sections Study Global Sapo Sample- IF+ISC 6t Initial program: 800 standard tests. Samples collected across all mineral body in X, Y and Z position. Both Geological and Process parameters modelling - Pioneer application at this level of detail in Iron ore mining. First 5-years pit Program Pilot test with a global sampling, representative of first 5 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot and bench tests per each section and global sample completed for IF and ISC. IC study already commenced (Fund. Gorceix): Liberation study and WI in process MINAS RIO SPECIFIC STUDIES Pilot and bench tests finished. PF sent to regrinding tests in Metso/USA. Acceptable levels of energy. In progress: Pipeline/Rheology studies and Pilot Larox Ceramec Filter. 6 to 10 years pit Program 11 to 15 years pit Program Pilot test with a global sampling, representative of 6 to 10 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test Pilot test with a global sampling, representative of 11 to 15 years pit finished. Part of each interval sampled from drillcore sample have been sent to standard test 37
38 Pellet Feed - Main Results Obtained in Pilot Tests Products Fe SiO 2 Al 2 O 3 SiO 2 + P P.F. RM RFe Al 2 O 3 Global S. Sapo sample 68,5 0,57 0,24 0,81 0,021 0,19 50,2 87,1 17 sections - global IF 68,3 1,29 0,11 1,41 0,015 0,17 47,6 81,5 17 sections - global ISC 69,2 0,95 0,18 1,13 0,020 0,10 44,2 77,4 First 5 years pit 68,4 1,21 0,42 1,63 0,015 0,11 46,8 79,7 6 to 10 years pit 67,8 1,00 0,31 1,31 0,019 0,17 47,4 83,5 11 to 15 years pit 68,1 1,00 0,33 1,33 0,019 0,80 46,1 85,1 38
39 MINERAL LAB AND PILOT PLANT 39
40 Laboratories and Pilot Plant Overview GALPÃO CÓRREGO PEREIRA Geology Drillcore file - 600m2 Leasure Square - future Screening and Crushing Lab and Pilot Plant 600m2 40
41 Laboratories and Pilot Plant Overview Curva de recuperação Y = 45,842 Ln(x) 122,06 concentrado 41
42 Lab e Pilot Plant Overview Minas Rio Industrial Plant 42
43 Minas Rio Pilot Plant Crushing and Screening External Area 43
44 Minas Rio Pilot Plant Grinding, Deslaming e Flotation Internal Area 44
45 Minas Rio Pilot Plant Grinding e Deslaming Internal Area 45
46 Minas Rio Pilot Plant Flotation Internal Area 46
47 Jigging Minas Rio Pilot Plant Magnetic Separation 47
48 Lab Preparation e Bench Flotation view 1 48
49 Lab Preparation e Bench Flotation view 2 Bench Flotation 49
50 Laboratório Análise Química Raio X 50
51 X-Ray Lab Sample Preparation 51
52 Mineralogy 52
53 Mini Pilot Plant 53
54 THANK YOU! Contact : carlos.magalhaes@angloamerican.com roney.sandrelli@angloamerican.com
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