share_log

Faraday Copper Announces Positive Metallurgical Results at Its Copper Creek Project in Arizona

Faraday Copper Announces Positive Metallurgical Results at Its Copper Creek Project in Arizona

法拉第铜业宣布其亚利桑那州铜溪项目的冶金业绩良好
Accesswire ·  02/26 08:45

VANCOUVER, BC / ACCESSWIRE / February 26, 2024 / Faraday Copper Corp. ("Faraday" or the "Company") (TSX:FDY)(OTCQX:CPPKF) is pleased to announce the results of its metallurgical program at its Copper Creek project in Arizona, USA ("Copper Creek").

不列颠哥伦比亚省温哥华/ACCESSWIRE/2024年2月26日/法拉第铜业公司(“法拉第” 或 “公司”)(多伦多证券交易所股票代码:FDY)(OTCQX: CPPKF)欣然宣布其位于美国亚利桑那州的铜溪项目(“铜溪”)的冶金项目结果。

Paul Harbidge, President and CEO, commented "The positive results from our metallurgical program continue to support our work towards advancing the Copper Creek project by significantly improving the economic returns and future metal production profile. In addition, the Phase III drill program is underway with a focus on testing new targets and expanding the Mineral Resource. I am excited about the exploration upside, especially with the initial reconnaissance drill results from the Area 51 target, which identified a new near-surface mineralized breccia."

总裁兼首席执行官保罗·哈比奇评论说:“我们的冶金计划的积极成果通过显著改善经济回报和未来的金属生产状况,继续支持我们推进Copper Creek项目的工作。此外,第三阶段钻探计划正在进行中,重点是测试新目标和扩大矿产资源。我对勘探的上行空间感到兴奋,尤其是51区目标的初步侦察钻探结果,该结果发现了一种新的近地表矿化角砾岩。”

Metallurgical Program Highlights

冶金项目亮点

The metallurgical program was designed to evaluate grind size optimization, gold recoveries, and test additional samples from the near-surface mineralization to further enhance project economics compared to the Preliminary Economic Assessment 1 ("PEA"). Key highlights include:

与初步经济评估相比,冶金项目旨在评估磨矿尺寸优化、金回收率,并测试来自近地表矿化的更多样本,以进一步提高项目经济性 1 (“豌豆”)。主要亮点包括:

  • Achieved copper rougher 2 recoveries of 95% in the sulphide composite by applying a substantially larger grind size 3. The increased grind size confirms the following benefits:
    • Opportunity to increase copper rougher recoveries to over 97% by utilizing Coarse Particle Flotation ("CPF") scavenging. CPF supports a potential increase to mill throughput without increasing the tailings pressure filtration requirement;
    • Significant reduction in ball mill grinding energy compared to the PEA (approximately 50%); and
    • Maintained copper concentrate quality with a consistently high average concentrate grade of 30.5% copper.
  • Confirmed gold recoveries in copper concentrate of over 75% supporting the potential for payable gold in the copper concentrate, which was not considered in previous studies.
  • Significantly improved near-surface oxide recovery through column leach tests, which returned copper recoveries of 84% to 92% in 43 days with net acid consumption <12 kg/t, compared to 75% in 60 days with net acid consumption of 20 kg/t utilized in the PEA.
  • 实现了更粗糙的铜材 2 通过施加更大的研磨尺寸,硫化物复合材料的回收率为95% 3。研磨尺寸的增加证实了以下优点:
    • 通过使用粗颗粒浮选(“CPF”)清除法,有机会将粗铜回收率提高到97%以上。CPF 支持在不增加尾矿压力过滤要求的情况下潜在地提高磨机吞吐量;
    • 与 PEA 相比,球磨机研磨能量显著降低(大约 50%);以及
    • 保持铜精矿质量,铜的平均精矿品位一直很高,为 30.5%。
  • 已证实铜精矿中的黄金回收率超过75%,这支持了铜精矿中可兑现黄金的可能性,而先前的研究并未考虑过这一点。
  • 通过柱浸试验,显著提高了近地表氧化物的回收率,在净酸消耗量

Zach Allwright, VP Projects and Evaluations, stated "The metallurgical program has uncovered significant upside, indicating that mill throughput in future technical studies could increase substantially from the PEA base case, while maintaining or enhancing metal recoveries. In addition, the test work highlights the opportunity to reduce operating costs and supports the potential for payable gold in the copper concentrate. Importantly, the Company's strategy of minimizing water consumption and limiting the surface footprint is supported by these favorable processing characteristics. We look forward to further increasing the value of the Copper Creek project."

项目与评估副总裁扎克·奥尔赖特表示:“冶金项目发现了显著的上行空间,这表明在未来的技术研究中,钢厂的产量可能会在PEA基础案例的基础上大幅增加,同时保持或提高金属回收率。此外,测试工作突显了降低运营成本的机会,并支持了铜精矿中可支付黄金的可能性。重要的是,公司最大限度地减少用水量和限制表面占地面积的战略得到了这些有利的加工特性的支持。我们期待进一步提高铜溪项目的价值。”

Next Steps

后续步骤

Based on the outcomes of the metallurgical program and ongoing exploration results, the Company is targeting the following steps to continue to enhance the value of the project:

根据冶金项目的结果和正在进行的勘探结果,该公司的目标是采取以下步骤来继续提高该项目的价值:

  • Exploration Drilling: Phase III drilling continues and is focused on reconnaissance drilling on new targets, expanding the Mineral Resource and better delineating high-grade mineralized zones.
  • Gold Assay Program: The Company continues to advance the gold assay program, currently focused on the Keel underground zone. Assay results from this program, paired with existing gold data, could support the inclusion of gold in future resource updates and project economics.
  • Metallurgical Assessments: Test work will be conducted as new resource targets are delineated. In addition, continued assessments will include further CPF flowsheet evaluation and a material type characterization program.
  • Technical Report Update: To incorporate updated geological, geotechnical, economic and metallurgical datasets.
  • 勘探钻探:第三阶段钻探仍在继续,重点是对新目标进行侦察钻探,扩大矿产资源并更好地划定高品位矿化带。
  • 黄金检验计划:该公司继续推进金检验计划,目前的重点是基尔地下区域。该项目的化验结果与现有的黄金数据相结合,可能支持将黄金纳入未来的资源更新和项目经济学。
  • 冶金评估:在确定新的资源目标后,将进行测试工作。此外,持续的评估将包括进一步的CPF流程表评估和材料类型表征计划。
  • 技术报告更新:纳入更新的地质、岩土工程、经济和冶金数据集。

For an overview of the metallurgical program and additional technical details, refer to the Appendix at the end of this news release.

有关冶金计划的概述和其他技术细节,请参阅本新闻稿末尾的附录。

Qualified Person

合格人员

The scientific and technical information contained in this news release has been reviewed and approved by Faraday's Vice President, Projects and Evaluations, Zach Allwright, P.Eng., who is considered a Qualified Person under National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101").

本新闻稿中包含的科学和技术信息已经过法拉第项目与评估副总裁扎克·奥尔赖特工程师的审查和批准,根据国家仪器43-101——矿业项目披露标准(“NI 43-101”),他被视为合格人士。

The information in this report relating to metallurgical test work results is based on and fairly reflects information reviewed by Mr. Peter Mehrfert, P.Eng. (Ausenco Engineering's consultant to Faraday). Mr. Mehrfert is a qualified metallurgist and has sufficient experience which is relevant to the management and interpretation of test work activities undertaken to qualify as Competent Person under NI 43-101. Mr. Mehrfert consents to the inclusion in the release of the matters based on their information in the form and context in which it appears.

本报告中有关冶金测试工作结果的信息基于并公平地反映了工程师彼得·梅尔弗特先生审查的信息。(Ausenco Engineering担任法拉第的顾问)。Mehrfert先生是一名合格的冶金学家,拥有丰富的经验,这与管理和解释为获得NI 43-101合格人员资格而开展的测试工作活动有关。Mehrfert先生根据其所提供的信息,同意将这些事项纳入新闻稿。

About Faraday Copper

关于法拉第铜业

Faraday Copper is a Canadian exploration company focused on advancing its flagship copper project in Arizona, U.S. The Copper Creek project, is one of the largest undeveloped copper projects in North America with open pit and bulk underground mining potential. The Company is well-funded to deliver on its key milestones and benefits from a management team and board of directors with senior mining company experience and expertise. Faraday trades on the TSX under the symbol "FDY".

Faraday Copper是一家加拿大勘探公司,专注于推进其在美国亚利桑那州的旗舰铜矿项目。Copper Creek项目是北美最大的未开发铜矿项目之一,具有露天和批量地下采矿的潜力。该公司拥有充足的资金,可以实现其关键里程碑,并受益于具有高级矿业公司经验和专业知识的管理团队和董事会。法拉第在多伦多证券交易所上市,交易代码为 “FDY”。

For additional information please contact:

欲了解更多信息,请联系:

Stacey Pavlova, CFA
Vice President, Investor Relations & Communications
Faraday Copper Corp.
E-mail: info@faradaycopper.com

Stacey Pavlova,CFA
投资者关系与传播副总裁
法拉第铜业公司
电子邮件:info@faradaycopper.com

To receive news releases by e-mail, please register using the Faraday website at .

要通过电子邮件接收新闻稿,请使用法拉第网站注册

Cautionary Note on Forward-Looking Statements

关于前瞻性陈述的警示说明

Some of the statements in this news release, other than statements of historical fact, are "forward-looking statements" and are based on the opinions and estimates of management as of the date such statements are made and are necessarily based on estimates and assumptions that are inherently subject to known and unknown risks, uncertainties and other factors that may cause actual results, level of activity, performance or achievements of Faraday to be materially different from those expressed or implied by such forward-looking statements. Such forward-looking statements and forward-looking information specifically include, but are not limited to, statements concerning the potential increase to copper recoveries and mill throughput, the expected copper concentrate quality, the potential for reduction in ball mill grinding energy, the expected gold and copper recoveries, the possibility of adding gold in future Mineral Resource Estimates and studies, the potential to reduce expected processing operating costs, and the exploration potential of the Copper Creek property.

除历史事实陈述外,本新闻稿中的一些陈述属于 “前瞻性陈述”,基于管理层截至发表此类陈述之日的观点和估计,必然基于估计和假设,这些估计和假设本质上受已知和未知风险、不确定性和其他因素的影响,这些因素可能导致法拉第的实际业绩、活动水平、业绩或成就与此类前瞻性陈述所表达或暗示的重大差异。此类前瞻性陈述和前瞻性信息特别包括但不限于有关铜回收率和磨机吞吐量可能增加、预期铜精矿质量、球磨机研磨能量减少的可能性、预期的黄金和铜回收率、在未来矿产资源估算和研究中增加黄金的可能性、降低预期加工运营成本的可能性以及Copper Creek地产勘探潜力的陈述。

Although Faraday believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements should not be in any way construed as guarantees of future performance and actual results or developments may differ materially. Accordingly, readers should not place undue reliance on forward-looking statements or information.

尽管法拉第认为此类前瞻性陈述中表达的预期是基于合理的假设,但此类陈述不应以任何方式被解释为未来业绩的保证,实际业绩或发展可能存在重大差异。因此,读者不应过分依赖前瞻性陈述或信息。

Factors that could cause actual results to differ materially from those in forward-looking statements include without limitation: market prices for metals; the conclusions of detailed feasibility and technical analyses; lower than expected grades and quantities of mineral resources; receipt of regulatory approval; receipt of shareholder approval; mining rates and recovery rates; significant capital requirements; price volatility in the spot and forward markets for commodities; fluctuations in rates of exchange; taxation; controls, regulations and political or economic developments in the countries in which Faraday does or may carry on business; the speculative nature of mineral exploration and development, competition; loss of key employees; rising costs of labour, supplies, fuel and equipment; actual results of current exploration or reclamation activities; accidents; labour disputes; defective title to mineral claims or property or contests over claims to mineral properties; unexpected delays and costs inherent to consulting and accommodating rights of Indigenous peoples and other groups; risks, uncertainties and unanticipated delays associated with obtaining and maintaining necessary licenses, permits and authorizations and complying with permitting requirements, including those associated with the Copper Creek property; and uncertainties with respect to any future acquisitions by Faraday. In addition, there are risks and hazards associated with the business of mineral exploration, development and mining, including environmental events and hazards, industrial accidents, unusual or unexpected formations, pressures, cave-ins, flooding and the risk of inadequate insurance or inability to obtain insurance to cover these risks as well as "Risk Factors" included in Faraday's disclosure documents filed on and available at .

可能导致实际业绩与前瞻性陈述存在重大差异的因素包括但不限于:金属的市场价格;详细可行性和技术分析的结论;矿产资源的等级和数量低于预期;获得监管部门的批准;获得股东批准;采矿率和回收率;重大资本要求;大宗商品现货和远期市场的价格波动;汇率波动;税收;控制、监管和政治或法拉第开展或可能开展业务的国家的经济发展;矿产勘探和开发的投机性质、竞争;关键员工的流失;劳动力、供应、燃料和设备成本的上涨;当前勘探或开垦活动的实际结果;事故;劳资纠纷;矿产索赔或财产所有权的缺陷或对矿产索赔的竞争;意外延误和土著人民和其他群体的咨询和容纳权所固有的费用;风险,不确定性和与获得和维持必要的执照、许可证和授权以及遵守许可要求(包括与Copper Creek房产相关的许可要求)相关的意外延迟;以及法拉第未来收购的不确定性。此外,还存在与矿产勘探、开发和采矿业务相关的风险和危害,包括环境事件和灾害、工业事故、异常或意外地层、压力、塌方、洪水、保险不足或无法获得保险来承保这些风险的风险,以及法拉第披露文件中包含的 “风险因素”,可在以下网址查阅

This press release does not constitute an offer to sell or a solicitation of an offer to buy any securities in any jurisdiction to any person to whom it is unlawful to make such an offer or solicitation in such jurisdiction. This press release is not, and under no circumstances is to be construed as, a prospectus, an offering memorandum, an advertisement or a public offering of securities in Faraday in Canada, the United States or any other jurisdiction. No securities commission or similar authority in Canada or in the United States has reviewed or in any way passed upon this press release, and any representation to the contrary is an offence.

本新闻稿不构成向在任何司法管辖区内向任何非法提供此类要约或招标的人出售或征求购买任何证券的要约。本新闻稿在加拿大、美国或任何其他司法管辖区的法拉第不是,在任何情况下也不得解释为招股说明书、发行备忘录、广告或证券公开发行。加拿大或美国的证券委员会或类似机构均未审查或以任何方式通过本新闻稿,任何与此相反的陈述均构成犯罪。

APPENDIX: OVERVIEW OF METALLURGICAL PROGRAM AND ADDITIONAL TECHNICAL DETAILS

附录:冶金项目概述和其他技术细节

Metallurgical Program Overview

冶金项目概述

The metallurgical program utilized samples from the Phase I and II drilling, to complement previous test work as summarized in the PEA. The metallurgical program was conducted by ALS Metallurgy, Kamloops, with oversight by Ausenco Engineering.

冶金项目使用了第一和第二阶段钻探的样品,以补充先前在PEA中总结的测试工作。冶金项目由坎卢普斯的ALS冶金公司开展,由Ausenco Engineering监督。

This test work program was designed to complete the following scope using samples taken throughout the resource area, with primary focus (and targeted sample coverage) on the open pit mill feed material:

该测试工作计划旨在使用在整个资源区域采集的样本完成以下范围,主要重点(和有针对性的样本覆盖范围)是露天磨机原料:

  • SAG mill comminution and Bond Mill Work Index ("BMWi") testing completed on all samples.
  • Mineralogical composition assessment on three oxide, three transition and nine sulphide variability samples.
  • Detailed mineralogy particle mineral analysis ("PMA") completed on sulphide master composite and coarse fractions of CPF sulphide composite.
  • Flotation testing on sulphide composites and both sulphide and transition variability samples.
  • Hydrofloat testing on a CPF sulphide composite.
  • Column leach tests and oxide bottle roll tests on oxide samples.
  • Gold analyses on feed samples and test products.
  • 已完成对所有样品的半自磨机粉碎和邦德磨机工作指数(“BMWi”)测试。
  • 对三个氧化物、三个过渡样本和九个硫化物变异性样本进行矿物学成分评估。
  • 对硫化物主复合材料和CPF硫化物复合物的粗馏分完成了详细的矿物学颗粒矿物分析(“PMA”)。
  • 对硫化物复合材料以及硫化物和过渡变异性样品进行浮选试验。
  • 在 CPF 硫化物复合材料上进行水浮试验。
  • 氧化物样品的柱浸测试和氧化物瓶辊测试。
  • 对饲料样本和测试产品进行黄金分析。

The outcomes of the metallurgical test work will be assimilated with the historical test work to form the basis of the process design criteria for future technical study updates.

冶金测试工作的结果将与历史测试工作相吸收,以构成未来技术研究更新的工艺设计标准的基础。

Sample Selection and Spatial Context

样本选择和空间背景

The metallurgical program comprised of 15 samples across the three material type domains, designed to complement historical sample coverage and ultimately result in an improved representation of the mine plan production profile envisaged in the PEA. While the focus of this program was on open pit materials, two underground samples were also included. Sample details are presented in Table 1.

冶金计划由三个材料类型领域的15个样本组成,旨在补充历史样本的覆盖范围,最终改善PEA中设想的矿山计划生产概况的代表性。虽然该项目的重点是露天矿物质,但也包括两个地下样本。表 1 中列出了示例详细信息。

Table 1: Metallurgical Sample Details

表 1:冶金样品详情

Material

Met ID

Area

Domain

Drill hole ID

Depth (m)

Cu

Mo

Ag

Au

from

to

%

%

g/t

g/t

Oxide

MET23-01

White bear

OP

22-008

8

26

0.58

0.001

1.0

0.02

MET23-02

Copper Knight SE

OP

23-026

20

37

0.18

0.001

1.0

0.02

MET23-03

Hilltop

OP

23-021

8

23

0.24

<0.001

1.0

0.02

Transition

MET23-04

Copper Knight

OP

22-016

61

70

0.67

0.001

1.3

0.01

MET23-05

Copper Prince

OP

22-018

107

124

0.83

0.009

1.2

0.02

MET23-06

Copper Giant

OP

22-015

8

14

2.01

0.008

3.4

0.26

Sulphide

MET23-07

Copper Giant

OP

22-012

33

43

0.34

0.002

0.4

0.02

MET23-08

Copper Giant

OP

22-012

62

80

0.40

0.001

0.7

0.03

MET23-09

Childs Aldwinkle

OP

23-023

188

208

0.91

0.020

3.8

0.13

MET23-10

Childs Aldwinkle

OP

23-023

223

239

0.42

0.026

1.0

0.02

MET23-11

Keel

UG

23-024

751

765

0.47

0.003

3.5

0.07

MET23-12

Keel

UG

23-024

939

949

0.62

0.004

5.9

0.02

MET23-13

Pole

OP

23-032

75

91

0.59

<0.001

4.0

0.05

MET23-14

Bald

OP

23-037

222

232

0.48

0.001

1.8

0.02

MET23-15

Mammoth

OP

22-008

493

507

0.79

0.001

1.0

<0.01

材质

遇见 ID

区域

钻孔 ID

深度 (m)

Mo

Ag

Au

%

%

g/t

g/t

氧化物

MET23-01

白熊

OP

22-008

8

26

0.58

0.001

1.0

0.02

MET23-02

铜骑士 SE

OP

23-026

20

37

0.18

0.001

1.0

0.02

MET23-03

山顶

OP

23-021

8

23

0.24

1.0

0.02

过渡

MET23-04

铜骑士

OP

22-016

61

70

0.67

0.001

1.3

0.01

MET23-05

铜王子

OP

22-018

107

124

0.83

0.009

1.2

0.02

MET23-06

铜巨人

OP

22-015

8

14

2.01

0.008

3.4

0.26

硫化物

MET23-07

铜巨人

OP

22-012

33

43

0.34

0.002

0.4

0.02

MET23-08

铜巨人

OP

22-012

62

80

0.40

0.001

0.7

0.03

MET23-09

Childs Aldwinkle

OP

23-023

188

208

0.91

0.020

3.8

0.13

MET23-10

Childs Aldwinkle

OP

23-023

223

239

0.42

0.026

1.0

0.02

MET23-11

龙骨

UG

23-024

751

765

0.47

0.003

3.5

0.07

MET23-12

龙骨

UG

23-024

939

949

0.62

0.004

5.9

0.02

MET23-13

极点

OP

23-032

75

91

0.59

4.0

0.05

MET23-14

秃头

OP

23-037

222

232

0.48

0.001

1.8

0.02

MET23-15

猛犸象

OP

22-008

493

507

0.79

0.001

1.0

Note: Open pit domain is referenced as "OP" and underground domain is referenced as "UG".

注意:露天域名被称为 “OP”,地下域名被称为 “UG”。

Comminution Results

粉碎结果

SAG and ball mill energy assessment tests were conducted on the variability samples, which included industry standard SAG mill comminution and BMWi measurements, respectively. Grind sizes stated herein refer to 80% passing ("P80") the specified particle size. Results are presented in Table 2.

SAG 和球磨机能量评估测试是对变异性样本进行的,其中分别包括行业标准的 SAG 磨机粉碎和 BMWi 测量值。此处所述的研磨粒度是指超过规定粒径的 80%(“P80”)。结果如表 2 所示。

Table 2: Comminution Results

表 2:粉碎结果

Material

A x b

BMWi (kwh/t)

Min / Max

Average

Min / Max

Average

Oxide

32 / 59

45

-

-

Transition

41 / 49

45

9.9 / 12.0

10.9

Sulphide

30 / 42

37

12.3 / 14.3

13.3

材质

A x b

BMWi(千瓦时/吨)

最小/最大

平均值

最小/最大

平均值

氧化物

32/59

45

-

-

过渡

41/49

45

9.9/12.0

10.9

硫化物

30/42

37

12.3/14.3

13.3

The outcomes of the comminution test work are confirmatory of the PEA design basis and are within the design tolerances. BMWi results are marginally lower than the averages measured in the previous program.

粉碎测试工作的结果证实了PEA的设计基础,并且在设计公差范围内。BMWi的业绩略低于先前计划中测得的平均水平。

Increasing the primary grind size to 220 μm could result in approximately a 13% reduction in ball mill grinding energy compared to the PEA estimate. Further increasing the grind size to 350 μm could result in a 50% reduction in ball mill grinding energy. Ball mill grinding energy was estimated in the PEA to account for roughly 24% of the total consumed power in the concentrator.

与PEA的估计值相比,将初级研磨尺寸增加到220 μm可以使球磨机的研磨能量减少约13%。进一步将研磨尺寸增加到350 μm可以使球磨机的研磨能量减少50%。据估计,PEA中的球磨机研磨能量约占浓缩器总消耗能量的24%。

Flotation Performance - Sulphide Material

浮选性能-硫化物材料

Flotation testing on the sulphide master composite culminated in a locked cycle test conducted at a primary grind size of 210 μm. It was determined that low dosages of potassium amyl xanthate ("PAX"), a less expensive and non-selective collector compared to what was considered in the PEA, was suitable for cleaner performance and improved recovery. Results are presented in Table 3.

对硫化物主复合材料的浮选测试最终导致了在初级研磨尺寸为 210 μm 下进行的锁定循环试验。经确定,低剂量的戊基黄原酸钾(“PAX”)(与PEA中所考虑的相比,这是一种更便宜且非选择性的除尘器)适用于更清洁的性能和更高的回收率。结果如表 3 所示。

Table 3: Locked Cycle Test Results

表 3:锁定循环测试结果

Sample

Primary Grind (μm)

Regrind (μm)

Feed Assay (%)

Concentrate Grade (%)

Recovery (%)

Cu

Mo

Cu

Mo

Cu

Mo

Sulphide Master
Composite

210

33

0.56

0.007

31.2

0.33

94.2

85.2

示例

初级研磨 (μm)

再研磨 (μm)

饲料检测 (%)

浓缩物等级 (%)

恢复率 (%)

Mo

Mo

Mo

硫化物大师
复合材料

210

33

0.56

0.007

31.2

0.33

94.2

85.2

Grind series testing suggested that coarser primary grinds compared to the PEA (190 μm) can be applied. More aggressive primary grind sizes were evaluated on the CPF sulphide composite and the variability samples. Test work confirms that targeting 350 μm resulted in only marginally lower copper recoveries. Rougher circuit copper recoveries were consistently high at the grind sizes tested. Results are presented in Table 4.

研磨系列测试表明,与PEA(190 μm)相比,可以进行更粗糙的初级研磨。对CPF硫化物复合材料和变异性样品进行了更具侵蚀性的初级研磨尺寸进行了评估。测试工作证实,以 350 μm 为目标只能导致铜回收率略有降低。在测试的研磨粒度下,更粗糙的回路铜回收率一直很高。结果如表 4 所示。

Table 4: Sulphide Rougher Flotation Results

表 4:硫化物粗糙浮选结果

Sample ID

Primary Grind (μm)

Rougher Mass (%)

Feed (%)

Rougher Recovery (%)

Cu

Mo

Cu

Mo

MET23-07

420

6.1

0.33

0.002

80.7

53.9

MET23-08

343

5.1

0.43

0.001

95.1

54.7

MET23-09

319

9.3

0.95

0.016

96.5

94.5

MET23-10

276

8.4

0.42

0.023

97.4

96.0

MET23-11

278

5.5

0.43

0.003

98.0

84.4

MET23-12

222

9.7

0.72

0.005

98.6

91.3

MET23-13

316

14.6

0.52

0.001

88.6

14.6

MET23-14

280

18.1

0.45

0.001

95.8

45.9

MET23-15

283

13.1

0.69

0.001

98.0

57.5

Variability Sample Average

304

10.0

0.55

0.006

94.3

65.9

Sulphide Master Composite

210

10.5

0.52

0.007

96.0

93.2

CPF Composite

372

8.3

0.68

0.004

95.8

77.1

样本编号

初级研磨 (μm)

粗糙质量 (%)

饲料 (%)

粗糙回收率 (%)

Mo

Mo

MET23-07

420

6.1

0.33

0.002

80.7

53.9

MET23-08

343

5.1

0.43

0.001

95.1

54.7

MET23-09

319

9.3

0.95

0.016

96.5

94.5

MET23-10

276

8.4

0.42

0.023

97.4

96.0

MET23-11

278

5.5

0.43

0.003

98.0

84.4

MET23-12

222

9.7

0.72

0.005

98.6

91.3

MET23-13

316

14.6

0.52

0.001

88.6

14.6

MET23-14

280

18.1

0.45

0.001

95.8

45.9

MET23-15

283

13.1

0.69

0.001

98.0

57.5

变异性样本平均值

304

10.0

0.55

0.006

94.3

65.9

硫化物主复合材料

210

10.5

0.52

0.007

96.0

93.2

CPF 复合材料

372

8.3

0.68

0.004

95.8

77.1

Open circuit cleaner flotation tests were completed on the sulphide variability samples using low dosages of PAX. Copper concentrate grades were consistently high, averaging 30.5% copper. Cleaner circuit copper recoveries are expected to average 98%, based on locked cycle test results. Cleaner circuit molybdenum recoveries are similarly expected to range between 86% to 92% for feed grades above 0.003% molybdenum.

使用低剂量 PAX 完成了对硫化物变异性样品的开路清洁器浮选测试。铜精矿品位一直很高,平均铜含量为30.5%。根据锁定周期测试结果,更清洁的回路铜回收率预计平均为98%。对于钼含量高于 0.003% 的饲料等级,清洁回路钼的回收率同样预计在 86% 至 92% 之间。

Coarse Grind and CPF Performance Overview

粗磨和 CPF 性能概述

CPF is a technique that combines the upward flow of a hydrosizer with flotation bubbles to recover coarse mineralized particles that would otherwise report to tailings in conventional froth flotation. It is applied in a scavenging application on rougher flotation tails that have passed through hydrocyclone size separation to remove lower grade fine material. The coarse material enters a Hydrofloat cell which recovers a coarse scavenger concentrate. The thickened underflow, depleted of any fines, is essentially free-draining and can be dewatered using a low energy system such as a sieve bend screen or a high-capacity belt filter.

CPF 是一种将加氢过滤器的向上流动与浮选气泡相结合的技术,以回收粗矿化颗粒,否则这些颗粒在常规泡沫浮选中会向尾矿报告。它适用于经过水力旋流器尺寸分离的较粗糙浮选尾部的清理应用,以去除低等级的精细物质。粗糙的物质进入水浮池,该电池回收粗糙的清除剂浓缩物。加厚的下溢流消耗掉了所有细粉,基本上是自由排水的,可以使用低能耗系统(例如弯曲筛网或大容量带式过滤器)进行脱水。

Three bulk rougher flotation tests were conducted on a sulphide CPF composite at primary grind sizes ranging from 350 μm to 450 μm. Results are presented in Table 5.

对一种硫化物 CPF 复合材料进行了三次散装粗糙浮选试验,初级研磨尺寸从 350 μm 到 450 μm 不等。结果如表 5 所示。

Table 5: CPF Results

表 5:公积金结果

CPF Test

Primary Grind (μm)

Copper Recovery (%)

% of Rougher Tails to Hydrofloat Tails

Conventional Rougher

Hydrofloat Contribution

Net Rougher

P1

356

94.9

2.5

97.4

42.4

P2

445

93.4

2.8

96.2

45.3

P3

431

92.6

3.3

95.9

44.1

CPF 测试

初级研磨 (μm)

铜回收率 (%)

粗糙尾巴到水力浮动尾巴的百分比

传统粗糙机

水上浮动的贡献

Net Rougher

P1

356

94.9

2.5

97.4

42.4

P2

445

93.4

2.8

96.2

45.3

P3

431

92.6

3.3

95.9

44.1

Note: After recovering 93%-95% of the feed copper to a rougher concentrate, the rougher tails were classified such that approximately 50% of the mass reported to a +150 μm fraction with elevated copper levels. These coarse tails were then treated in a laboratory Hydrofloat cell that recovered approximately 60% of the copper and molybdenum in the CPF feed to a concentrate containing about 12% of the feed mass.

注意:将93%-95%的进料铜回收为更粗糙的精矿后,对粗糙的尾部进行了分类,使大约50%的质量报告为+150 μm的分数,铜含量升高。然后,这些粗尾巴在实验室的Hydrofloat细胞中进行了处理,该电池将CPF饲料中约60%的铜和钼回收成含有约12%饲料质量的浓缩物。

The CPF concentrate requires regrinding prior to returning to the rougher feed or similar conventional flotation stage. A simplified flowsheet incorporating CPF is presented in Figure 1.

CPF 浓缩物需要重新研磨,然后才能恢复粗糙的进料或类似的传统浮选阶段。包含 CPF 的简化流程如图 1 所示。

CPF performance confirms that a coarser grind does not compromise copper recoveries. Applying CPF scavenging on the rougher tails of a 350 μm primary grind appears to return the same overall rougher circuit copper recovery as a conventional flotation circuit with a 200 μm primary grind as proposed in the PEA. Additional grinding energy is only applied to a targeted 6% of the feed mass returning as CPF concentrate. While the incremental copper recovery improvement is modest, a significant benefit of the CPF circuit is removing tonnage from the tailings filtration circuit. In this arrangement, only about 57% of the total mill tailings reports to the thickening and filtration circuit. The tailings processing opportunity of this flowsheet is presented graphically in Figure 2. Preliminary results suggest that a CPF circuit could potentially allow for an increase in throughput to 45 ktpd without increasing the tailings filtration requirements.

CPF 的性能证实,粗磨不会影响铜的回收率。对350 μm初级研磨的粗糙尾部进行CPF清除似乎可以获得与PEA中提议的具有200 μm初级研磨的传统浮选回路相同的整体粗糙回路铜回收率。额外的研磨能量仅应用于以 CPF 浓缩物形式返回的目标进料质量的 6%。尽管铜回收率的增量改善不大,但CPF回路的一个显著优势是减少了尾矿过滤回路的吨位。在这种安排中,只有大约 57% 的磨机尾矿向浓缩和过滤回路报告。该流程表的尾矿处理机会如图 2 所示。初步结果表明,CPF回路有可能在不增加尾矿过滤要求的情况下将吞吐量提高到每天45千吨。

Figure 1: Potential Coarse Grind Flowsheet

图 1:潜在的粗磨流程图

Figure 2: Tailings Processing Comparison between Conventional Floatation and CPF Addition

图 2:传统浮选和 CPF 添加之间的尾矿处理比较

Flotation Performance - Transition Variability

浮选性能-过渡变异性

Flotation testing on the transitional material variability samples supports the current understanding of copper recovery as a function of feed mineralogy. Metallurgical performance was generally better on these three samples compared to those tested in Phase I for the PEA design basis, however the average copper mineral assemblage was similar to the estimate used for the PEA. Metallurgical data is presented in Table 6.

对过渡材料变异性样本的浮选测试支持了目前对铜回收率作为原料矿物学函数的理解。与第一阶段在PEA设计基础上测试的样品相比,这三个样品的冶金性能总体上更好,但是平均铜矿物组合与PEA中使用的估计值相似。冶金数据如表 6 所示。

Table 6: Transition Metallurgical Data

表 6:过渡冶金数据

Metallurgical Details

Copper Knight

Copper Prince

Copper Giant

MET23-04

MET23-05

MET23-06

Copper deportment (%) in feed by mineral type

Chalcopyrite/Bornite

68.2

37.7

19.6

Chalcocite/Covellite

5.4

47.2

53.7

Malachite/Azurite

0.7

0.1

11.8

Cu-FeOx

22.4

11.7

9.4

Cu Silicates

3.2

3.2

5.6

Processing Details

Primary Grind (μm)

145

157

153

Sulphidization Applied

No

Yes

Yes

Post Sulphidization Cu Recovery (%)

-

4.1

22.9

Regrind

Yes

No

No

Cleaner Stages

3

1

Not Required

Metallurgical Performance

Cu Feed Grade (%)

0.67

0.85

2.25

Cu Recovery (%)

65.1

81.5

82.0

Concentrate Grade Cu (%)

25.8

29.7

32.8

冶金详情

铜骑士

铜王子

铜巨人

MET23-04

MET23-05

MET23-06

按矿物类型分列的饲料中的铜排出量(%)

黄铜矿/硼矿石

68.2

37.7

19.6

Chalcocite/Covellite

5.4

47.2

53.7

孔雀石/蓝晶石

0.7

0.1

11.8

Cu-FeoX

22.4

11.7

9.4

硅酸铜

3.2

3.2

5.6

处理详情

初级研磨 (μm)

145

157

153

应用硫化处理

没有

是的

是的

硫化后铜回收率 (%)

-

4.1

22.9

再研磨

是的

没有

没有

更清洁的舞台

3

1

不是必需的

冶金性能

铜饲料等级 (%)

0.67

0.85

2.25

铜回收率 (%)

65.1

81.5

82.0

精矿级铜 (%)

25.8

29.7

32.8

Concentrate Quality

浓缩质量

Final bulk concentrates were assayed for minor elements of interest. Results are presented in Table 7. Two of the sulphide variability samples produced concentrates that contained sufficient molybdenum levels to support the inclusion of a copper-molybdenum separation circuit. Gold contents in the concentrates were above minimum payable levels on average. Silver contents varied and were significant in some samples. All arsenic contents were well below penalty level limits.

对最终的散装浓缩物进行了微量感兴趣的元素检测。结果如表 7 所示。两个硫化物变异性样品产生的浓缩物含有足够的钼含量,足以支持铜钼分离回路的加入。精矿中的黄金含量平均高于最低应付水平。在某些样本中,银含量各不相同,含量很高。所有砷含量都远低于罚款限额。

Table 7: Concentrate Quality of Variability Samples

表 7:变异性样本的浓缩质量

Material

Met ID

Assay (%)

Assay (g/t)

Cu

Mo

As

Au

Ag

Sulphide

MET23-07

29.1

0.090

0.006

1.4

18

MET23-08

31.9

0.050

0.008

1.9

32

MET23-09

36.1

0.760

0.023

4.9

142

MET23-10

35.2

2.15

0.003

3.6

80

MET23-11

47.7

0.250

0.002

8.8

310

MET23-12

33.4

0.160

0.023

1.5

240

MET23-13

25.2

0.002

0.071

1.8

96

MET23-14

23.9

0.015

0.006

0.7

52

MET23-15

32.1

0.027

0.130

0.1

28

MC LCT

31.2

0.331

0.039

2.1

88

Transition

MET23-04

25.8

0.033

0.014

1.2

58

MET23-05

29.7

0.365

0.013

0.8

53

MET23-06

32.8

0.135

0.013

3.9

38

材质

遇见 ID

测定 (%)

化验 (g/t)

Mo

作为

Au

Ag

硫化物

MET23-07

29.1

0.090

0.006

1.4

18

MET23-08

31.9

0.050

0.008

1.9

32

MET23-09

36.1

0.760

0.023

4.9

142

MET23-10

35.2

2.15

0.003

3.6

80

MET23-11

47.7

0.250

0.002

8.8

310

MET23-12

33.4

0.160

0.023

1.5

240

MET23-13

25.2

0.002

0.071

1.8

96

MET23-14

23.9

0.015

0.006

0.7

52

MET23-15

32.1

0.027

0.130

0.1

28

MC LCT

31.2

0.331

0.039

2.1

88

过渡

MET23-04

25.8

0.033

0.014

1.2

58

MET23-05

29.7

0.365

0.013

0.8

53

MET23-06

32.8

0.135

0.013

3.9

38

Oxide Leach Performance - Column Leach Testing

氧化物浸出性能-柱浸测试

Historical test work on leach performance was limited with only two instances where copper recovery from oxide materials was investigated. The oxide recoveries considered in the PEA were based on assumptions informed by limited information and therefore the subsequent metallurgical test work included more comprehensive column leach testing from various oxide sources.

历史上对浸出性能的测试工作有限,只有两次研究了从氧化物材料中回收铜的情况。PEA中考虑的氧化物回收率是基于有限信息的假设,因此随后的冶金测试工作包括对各种氧化物来源进行更全面的柱浸测试。

Three samples of 1⁄2 HQ drill core were provided for leach testing. The samples represent near-surface mineralization from three different pit areas. The samples were coarse crushed to minus 32mm, riffle split and sub-samples were further crushed as required.

提供了三个 1⁄2 HQ 钻芯样品用于浸出试验。这些样本代表了来自三个不同矿区的近地表矿化。样品被粗压至负32毫米,裂缝分开,子样本按要求进一步压碎。

Two 10 kg test column leach test charges were prepared for each sample, crushed to top sizes of 32 or 19mm. Each test charge was agglomerated with a sulphuric acid cure solution and the columns were then irrigated for 6 weeks (43 days) with a dilute acid solution (5 g/L). Summarized metallurgical results are presented in Table 8 and leach extraction curves are presented graphically in Figure 3.

为每个样品准备了两个 10 kg 的测试柱浸出测试装料,压碎至最大尺寸为 32 或 19mm。每个测试电荷都用硫酸固化溶液凝结,然后用稀酸溶液(5 g/L)对色谱柱进行6周(43天)的灌溉。表 8 中列出了总结的冶金结果,浸出物提取曲线以图形方式显示在图 3 中。

The copper leach performance on these three samples shows considerable improvement over the estimates used in the PEA design. Most notable is that the net sulphuric acid consumptions are considerably lower than the PEA assumption.

与PEA设计中使用的估计值相比,这三个样品的铜浸出性能显示出相当大的改善。最值得注意的是,净硫酸消耗量远低于PEA的假设。

Table 8: Column Leach Results

表 8:列浸出结果

Metallurgical Parameter

White Bear

Copper Knight

Hilltop

PEA

MET23-01

MET23-02

MET23-03

Design Assumption

Crush Size

-19mm

-32mm

-19mm

-32mm

-19mm

-32mm

-17mm

Leach days

43

43

43

43

43

43

60

Feed Copper (%)

0.81

0.69

0.32

0.20

0.23

0.22

0.29

Cu Extraction (%)

83.8

77.7

92.5

88.5

89.8

66.8

75.0

Acid Cure (kg/t)

20

20

15

15

15

15

-

Net Acid Consumption (kg/t)

11.6

12.8

4.9

3.4

10.5

10.8

20.0

冶金参数

白熊

铜骑士

山顶

豌豆

MET23-01

MET23-02

MET23-03

设计假设

粉碎尺寸

-19 毫米

-32 毫米

-19 毫米

-32 毫米

-19 毫米

-32 毫米

-17 毫米

浸出天数

43

43

43

43

43

43

60

原料铜 (%)

0.81

0.69

0.32

0.20

0.23

0.22

0.29

铜萃取 (%)

83.8

77.7

92.5

88.5

89.8

66.8

75.0

酸性固化 (kg/t)

20

20

15

15

15

15

-

净酸消耗量 (kg/t)

11.6

12.8

4.9

3.4

10.5

10.8

20.0

Copper extractions exceeded 80% at the -19mm crush size. Only MET23-03 showed performance sensitivity to crush size. MET23-01 kinetics were somewhat hindered initially due to low acid conditions.

在-19mm的压碎尺寸下,铜的开采量超过80%。只有 MET23-03 对粉碎大小表现出性能敏感度。最初,由于低酸条件,MET23-01 的动力学受到一定阻碍。

Figure 3: Column Leach Extraction Curves

图 3:柱浸提取曲线

Precious Metal Deportment Assessment

贵金属举报评估

In parallel with the gold assay program (refer to news release dated October 5, 2023), the metallurgical program included an assessment on gold deportment to concentrate. Gold recoveries to variability cleaner concentrates ranged from 37% to 92%, and locked cycle testing on the sulphide master composite measured 73% gold recovery to final copper concentrate. Results suggest that a gold recovery to final concentrate of 75% can be expected at feed grades of 0.05 g/t gold.

与黄金分析计划(参见2023年10月5日的新闻稿)平行,冶金项目还包括对黄金精矿流出量的评估。可变清洁精矿的金回收率从 37% 到 92% 不等,硫化物主复合材料的锁定循环测试显示,最终铜精矿的金回收率为 73%。结果表明,在0.05 g/t金的饲料品位下,黄金的最终精矿可望回收至75%。

Gold grades in concentrate are dependent on the copper:gold ratio in the feed. The results on variability samples suggest that at average feed grades of 0.44% copper and concentrate mass recoveries of 1.4%, feed grades of 0.05 g/t gold would result in copper concentrates containing approximately 2.9 g/t gold.

精矿中的金等级取决于饲料中的铜金比例。变异性样本的结果表明,在平均饲料品位为0.44%铜和精矿质量回收率为1.4%的情况下,0.05 g/t金的饲料等级将导致铜精矿含有约2.9 g/t的金。

Silver recoveries from variability samples were also tested as part of this program. Results indicate a silver recovery of 75% from feed grades of 2g/t silver. Metallurgical test work suggests similar performance for both gold and silver.

作为该计划的一部分,还对可变性样本中的银回收率进行了测试。结果表明,从饲料等级的2g/t银中回收率为75%。冶金测试工作表明,黄金和白银的表现相似。

Results for gold and silver deportment on variability samples are shown graphically in Figure 4.

变异性样本的金和银分离结果以图形方式显示在图 4 中。

Figure 4: Gold and Silver Recovery

图 4:黄金和白银的回升

Mineralogy Overview

矿物学概述

Mineralogical composition assessments were completed on the variability samples by QEMSCAN. The results provide valuable confirmation of core logging interpretation and are consistent with geochemical assay results. The copper deportment data helps in understanding metallurgical performance. Copper deportment to mineral forms is presented graphically in Figure 5.

QEMSCAN对变异性样本完成了矿物学成分评估。这些结果为岩心测井解释提供了宝贵的证实,并且与地球化学分析结果一致。铜排放数据有助于了解冶金性能。铜向矿物形态的迁移情况如图 5 所示。

Figure 5: Copper Deportment by Mineral Form

图 5:按矿物形态划分的铜含量

The ratio of pyrite to copper sulphides can be an important processing parameter, as values below three tend to have lower regrinding energy requirements and positive implications on metallurgical performance. The pyrite to copper sulphide ratios of variability samples are displayed graphically in Figure 6 relative to copper feed grade. Generally, the material is low in pyrite content, only the Bald sample had somewhat elevated pyrite levels.

黄铁矿与硫化铜的比例可能是一个重要的加工参数,因为低于三的值往往具有较低的重磨能量需求,并且会对冶金性能产生积极影响。变异性样品的黄铁矿与硫化铜的比率以图形方式显示在图 6 中相对于铜原料等级。通常,该材料的黄铁矿含量较低,只有Bald样品的黄铁矿含量有所升高。

Figure 6: Ratio of Pyrite to Copper Sulphides - Variability Samples

图 6:黄铁矿与硫化铜的比例-变异性样品

A more detailed PMA was conducted on the sulphide master composite at a primary grind sizing of 209 μm. The liberation characteristics were favorable, which supports the metallurgical performance measured by conventional flotation. Specifically:

对硫化物主复合材料进行了更详细的 PMA,初级研磨尺寸为 209 μm。解放特性良好,这支持了传统浮选测得的冶金性能。具体而言:

  • The size distribution of the copper sulphide grains was coarse, measured at 80% passing 142 μm. Although the overall copper sulphide mineral liberation was approximately 53%, about 80% of the mineral mass was in grains which contained 50% or more copper sulphide mineral. The high quality of the grains allows for successful bubble attachment in froth flotation.
  • 硫化铜晶粒的尺寸分布很粗糙,测量值为80%,超过142 μm。尽管硫化铜矿物的总体释放量约为53%,但约80%的矿物质量位于含有50%或更多硫化铜矿物的颗粒中。高质量的颗粒允许在泡沫浮选中成功附着气泡。

A similar PMA was conducted on fractions the CPF composite at a primary grind sizing of 295 μm. The liberation characteristics did not appear to decrease significantly. About 75% of the copper sulphide mineral mass was in grains which contained 50% or more copper sulphide mineral.

在初级研磨尺寸为295 μm的CPF复合材料的馏分上进行了类似的PMA。解放特征似乎没有显著降低。大约75%的硫化铜矿物是含有50%或更多硫化铜矿物的晶粒。

End Notes

结尾笔记

1 The Preliminary Economic Assessment was reported in a technical report titled "Copper Creek Project NI 43-101 Technical Report and Preliminary Economic Assessment" with an effective date of May 3, 2023 available on the Company's website at and on the Company's SEDAR+ profile at .
2 Rougher recovery refers to the percentage of valuable minerals recovered in the initial or primary stage of the flotation process.
3 Refers to grind size of 350 μm P80 applied to the sulphide composite, compared to 190 μm P80 utilized in the PEA. Grind sizes stated throughout this news release refer to 80% passing ("P80") the specified particle size.

1 初步经济评估报告载于一份题为 “北卡罗来纳州铜溪项目43-101技术报告和初步经济评估” 的技术报告中,该报告生效日期为2023年5月3日,可在公司网站和公司的SEDAR+简介上查阅。
2 粗糙回收率是指在浮选过程的初始或初级阶段回收的有价值矿物的百分比。
3 指应用于硫化物复合材料的研磨尺寸为350 μm P80,而PEA中使用的研磨尺寸为190 μm P80。本新闻稿中所述的研磨粒度是指超过规定粒径的 80%(“P80”)。

SOURCE: Faraday Copper Corp.

来源:法拉第铜业公司


声明:本内容仅用作提供资讯及教育之目的,不构成对任何特定投资或投资策略的推荐或认可。 更多信息
    抢沙发