轉變礦石加工：減少尾礦和水強度(1).pdf

1、ICMM Mine Tailings SummitReduceSEPTEMBER 2024LUKE VOLLERT PRINCIPAL PROCESS ENGINEERCautionary Statement Regarding Forward Looking Statements,Including OutlookThis presentation contains“forward-looking statements”within the meaning of Section 27A of the Securities Act of 1933,as amended,and Section

2、21E of the Securities Exchange Act of 1934,as amended,which are intended to be covered by the safe harbor created by such sections and other applicable laws.Where a forward-looking statement expresses or implies an expectation or belief as to future events or results,such expectation or belief is ex

3、pressed in good faith and believed to have a reasonable basis.However,such statements are subject to risks,uncertainties and other factors,which could cause actual results to differ materially from future results expressed,projected or implied by the forward-looking statements.Forward-looking statem

4、ents often address our expected future business and financial performance and financial condition;and often contain words such as“anticipate,”“intend,”“plan,”“will,”“would,”“estimate,”“expect,”“believe,”“pending,”“proposed”or“potential.”Forward-looking statements in this presentation may include,wit

5、hout limitation,(i)estimates of future production and sales,including production outlook,average future production and upside potential,including our Full Potential initiatives and synergies;(ii)estimates of future costs applicable to sales and all-in sustaining costs;(iii)estimates of future capita

6、l expenditures,including development and sustaining capital;(iv)expectations regarding the Tanami Expansion 2,Ahafo North and Cadia Block Caves projects,including,without limitation,expectations for production,milling,costs applicable to sales and all-in sustaining costs,capital costs,mine life exte

7、nsion,construction completion,commercial production,and other timelines;(v)any share repurchases,(vi)estimates of future cost reductions,synergies,including pre-tax synergies,savings and efficiencies,Full Potential and future cash flow enhancements through portfolio optimization,(vii)expectations re

8、garding future exploration and the development,growth and potential of Newmont Corporations(“Newmont”),project pipeline and investments;(viii)expectations regarding future investments or divestitures,including of non-core assets;(ix)expectations regarding free cash flow and returns to stockholders,i

9、ncluding with respect to future dividends and future share repurchases,the dividend framework and expected payout levels;(x)expectations regarding future mineralization,including,without limitation,expectations regarding reserves and recoveries;(xi)expectations regarding organic growth in our operat

10、ions;and(xii)other outlook.Estimates or expectations of future events or results are based upon certain assumptions,which may prove to be incorrect.Such assumptions,include,but are not limited to:(i)there being no significant change to current geotechnical,metallurgical,hydrological and other physic

11、al conditions;(ii)permitting,development,operations and expansion of Newmonts operations and projects being consistent with current expectations and mine plans,including,without limitation,receipt of export approvals;(iii)political developments in any jurisdiction in which Newmont operates being con

12、sistent with its current expectations;(iv)certain exchange rate assumptions for the Australian dollar to the U.S.dollar and Canadian dollar to the U.S.dollar,as well as other exchange rates being approximately consistent with current levels;(v)certain price assumptions for gold,copper,silver,zinc,le

13、ad and oil;(vi)prices for key supplies;(vii)the accuracy of current mineral reserve,mineral resource and mineralized material estimates;and(viii)other planning assumptions.Uncertainties include those relating to general macroeconomic uncertainty and changing market conditions,changing restrictions o

14、n the mining industry in the jurisdictions in which we operate,impacts to supply chain,including price,availability of goods,ability to receive supplies and fuel,and impacts of changes in interest rates.Such uncertainties could result in operating sites being placed into care and maintenance and imp

15、act estimates,costs and timing of projects.Uncertainties in geopolitical conditions could impact certain planning assumptions,including,but not limited to commodity and currency prices,costs and supply chain availabilities.Investors are reminded that the dividend framework is non-binding.Future divi

16、dends,beyond the dividend payable on June 27,2024 to holders of record at the close of business on June 4,2024 have not yet been approved or declared by the Board of Directors,and an annualized dividend payout or dividend yield has not been declared by the Board.Managements expectations with respect

17、 to future dividends are“forward-looking statements”.The declaration and payment of future dividends remain at the discretion of the Board of Directors and will be determined based on Newmonts financial results,balance sheet strength,cash and liquidity requirements,future prospects,gold and commodit

18、y prices,and other factors deemed relevant by the Board.For a more detailed discussion of such risks,see the Companys Annual Report on Form 10-K for the year ended December 31,2023 filed with the U.S.Securities and Exchange Commission(“SEC”)on February 29,2024,as well as Newmonts other SEC filings,a

19、vailable on the SEC website or .Newmont does not undertake any obligation to release publicly revisions to any“forward-looking statement,”including,without limitation,outlook,to reflect events or circumstances after the date of this presentation,or to reflect the occurrence of unanticipated events,e

20、xcept as may be required under applicable securities laws.Investors should not assume that any lack of update to a previously issued“forward-looking statement”constitutes a reaffirmation of that statement.Continued reliance on“forward-looking statements”is at investors own risk.Investors are also re

21、minded to refer to the endnotes to this presentation for additional information,and are also encouraged to review our Form 10-Q expected to be filed on,or about,April 29,2024.Slide Index1.About Newmont2.Why Reduce?3.Reduce Flowsheet Vision4.Precision Mining5.Precision Segregation6.Tailings Enhanceme

22、nt7.Theoretical ExerciseNEWMONT CORPORATION3Acknowledgement:Thanks to David Seaman&William Futcher(Newmont)for their contributions to the content.About Newmont5NEWMONT CORPORATIONWhere We OperateNORTH AMERICAAUSTRALIAAFRICALATIN AMERICA Carlin*Cortez*Turquoise Ridge*BrucejackRed ChrisAhafo SouthPeas

23、quitoPueblo Viejo*MerianCerro NegroYanacocha*Newmonts minority ownership interest is 38.5%of Nevada Gold Mines and 40%of Pueblo Viejo.*See endnotes re Tier 1 assets.BoddingtonTanamiCadia10Leading portfolio of Tier 1 assets to support decades of profitable and responsible goldTIER 1 OPERATIONS*Locate

24、d in the Worlds Most Favorable Mining Jurisdictions6Red Chris Block Cave,Wafi-Golpu Block Cave,Yanacocha Sulfides,Galore Creek,Nueva Unin and Norte AbiertoWORLD-CLASS COPPER-GOLD PROJECTS6CC&V,lonore,Musselwhite,Porcupine,Akyem and TelferANTICIPATED DIVESTITURESPAPUA NEW GUINEALihirThe Gold Sectors

25、Recognized Sustainability LeaderTop Gold Miner in the Dow Jones Sustainability Index for 9 Consecutive YearsRatings and rankings can fluctuate throughout the year,either based on Newmont performance,or relative to sector rankings and/or ratings agency scoring changes and periodic updates.Ratings and

26、 recognition items shown here are effective as of July 26,2024.*The Sustainalytics rating shown on the ESG screen of the Bloomberg terminal has changed from a percentile rank to a risk score.Newmonts 21 score translates to Medium Risk.SAM S&P(DJSI)Percentile ranking global metals and mining sector10

27、0%SUSTAINALYTICSESG Risk Rating measures exposure and management of material ESG risks*21TRANSPARENCYMost transparent company inS&P 500;Bloomberg ESG Disclosure Score#1CLIMATECDP Climate Scores reflective of coordinated action on climate issuesA-MSCITop-quartilePrecious metals and miningAAISS GOVERN

28、ANCE QUALITYSCORETop-decile for high-quality governance practices and lower governance risk1GLOBAL TOP 100Ranking among the 100 BestCorporate Citizens by 3BL#29HUMAN RIGHTSAmong more than 100 apparel andExtractive companies on the 2023Corporate Human Rights Benchmark#2ReduceGlobal TrendIncreasing De

29、mand+Lower Ore Grades ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION8BIGGER mills MORE power BIGGER and more expensive Tailings Storage Facilities MORE land BIGGER potential impacts on biodiversity MORE water demandEY|Top 10 business risks and opportunities for mining and metals in 2

30、024ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION9We cannot solve our problems with the same thinking we used when we created them Albert Einstein(Paraphrased)ICMM Tailings Reduction Roadmap(2022)Long term goal:“Developing improved and cost-effective alternatives to conventionally ma

31、naged tailings storage facilities that will reduce the risk of catastrophic failure”ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION10Identified focus areas:Reduce Flowsheet VisionICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION11Precision Mining On Shovel Sensing Reject

32、uneconomic material from ores as economically efficiently as possible.Leverage In-situ orebody heterogeneity.Sensor or separation method must be capable of detecting grade variability.Redirection is achieved by taking advantage of the finer resolution offered by the system.Each grade control assay r

33、epresents 4-5 truckloads of material.16 25 times increase in measurement resolution.ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION12Precision Mining Belt Scanning Leveraging bulk sorting also possible via an updated grade control process for block cave mining method.On-belt heterogen

34、eity from bulk mining needs to be amplified for sorting by manipulating the mining process.High-grade ore as mill feed low-grade ore for stockpiling/alternative treatment.Verification of the grade on belt using:Prompt Gamma Neutron Activation Analysis(PGNAA),X-ray fluorescence(XRF),Magnetic Resonanc

35、e(MR)etc.ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION13Precision Segregation-Ultra Efficient ComminutionTargets for Ultra Efficient Comminution:Reduced specific energy(kwh/t)relative to conventional SABC circuit.Dry processing.Enhanced circuit flexibility with rapid rate of start-u

36、p or shutdown.Steep product size distribution increased deportment of mill product into coarse flotation range.Grind only enough to liberate minerals for downstream processing-elimination of overgrinding.ICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION14Target distribution Coarse Flota

37、tion Target RangePrecision Segregation-Hybrid Classification Fine/slimes tailings retain more water and are difficult to dewater below saturation.Saturated fines are geotechnically unstable.Poor classification contributes to overgrinding and slimes generation.Hydrocyclones are space-efficient but in

38、herently poor classifiers.Screens are very efficient at classifying based on size but require a significant footprint.Hybrid classification is aimed at correcting the density bias introduced by hydrocyclones.Can significantly improve classification efficiency&reduces misclassification of fines.ICMMM

39、 Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION15Typical Hydrocyclone efficiency curve compared to an ideal separator(after Lisso,2020)Precision Segregation-Coarse FlotationICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION16 Successfully proven at scale since the industry firs

40、t installation at Cadia in 2018.Ability to effectively recover mineral composite particles in size fractions up to 650 m with as little as 5%surface liberation.Fundamentally shifts the economic optimum grind size.Produces a fines deficient sand tailings product.Tailings Enhancement Sand Opportunitie

41、s Precision segregation=increased deportment of tailings mass to sand fraction.Tailings entrainment&evaporation are largest water consumers.Higher water recovery possible from sand split system relative to thickened tailings.Separation of sand generates additional opportunities:Sand stacking in dedi

42、cated facility Sand for embankment construction Sand as a by-product streamICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION17Theoretical Exercise-Greenfield ProjectThe Challenges:Low-grade resource High energy consumption on a produced metal basis Lack of established infrastructure Wat

43、er-stressed site with high cost of makeup water Limited space and unfavourable topography for tailings storage Downstream populations Nature positive commitmentsICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION18MineSABC106m Grind P80CrushingTailings ThickenerConventional Float/LeachMin

44、eUltra Efficient ComminutionCoarser Grind P80CrushingCoarse SeparationConventional Float/LeachTailings ThickenerWaste RedirectSand StackConventionalReduceCR?Theoretical Exercise-Greenfield Project 12%diversion from mine to waste(conservative assumption)50%reduction tailings requiring dam storage 30%

45、reduction in water demandICMMM Tailings Innovation Summit 19.09.2024NEWMONT CORPORATION19If new economic optimum was 250 micron:Grind recovery curve is flattened significantly with efficient comminution+coarse particle separation.Optimum grind based on recovery vs.power+water+tailings infrastructure trade-off.Key divers will differ depending on project location.20NEWMONT CORPORATION