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

法拉第銅業宣佈其亞利桑那州銅溪項目的冶金業績良好
Accesswire ·  02/26 21:45

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").

不列顛哥倫比亞省溫哥華/ACCESSWIRE/2024年2月26日/法拉第銅業公司(“法拉第” 或 “公司”)(多倫多證券交易所股票代碼:FDY)(OTCQX: CPPKF)欣然宣佈其位於美國亞利桑那州的銅溪項目(“銅溪”)的冶金項目結果。

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."

總裁兼首席執行官保羅·哈比奇評論說:“我們的冶金計劃的積極成果通過顯著改善經濟回報和未來的金屬生產狀況,繼續支持我們推進Copper Creek項目的工作。此外,第三階段鑽探計劃正在進行中,重點是測試新目標和擴大礦產資源。我對勘探的上行空間感到興奮,尤其是51區目標的初步偵察鑽探結果,該結果發現了一種新的近地表礦化角礫岩。”

Metallurgical Program Highlights

冶金項目亮點

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:

與初步經濟評估相比,冶金項目旨在評估磨礦尺寸優化、金回收率,並測試來自近地表礦化的更多樣本,以進一步提高項目經濟性 1 (“豌豆”)。主要亮點包括:

  • 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.
  • 實現了更粗糙的銅材 2 通過施加更大的研磨尺寸,硫化物複合材料的回收率爲95% 3。研磨尺寸的增加證實了以下優點:
    • 通過使用粗顆粒浮選(“CPF”)清除法,有機會將粗銅回收率提高到97%以上。CPF 支持在不增加尾礦壓力過濾要求的情況下潛在地提高磨機吞吐量;
    • 與 PEA 相比,球磨機研磨能量顯著降低(大約 50%);以及
    • 保持銅精礦質量,銅的平均精礦品位一直很高,爲 30.5%。
  • 已證實銅精礦中的黃金回收率超過75%,這支持了銅精礦中可兌現黃金的可能性,而先前的研究並未考慮過這一點。
  • 通過柱浸試驗,顯著提高了近地表氧化物的回收率,在淨酸消耗量

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."

項目與評估副總裁扎克·奧爾賴特表示:“冶金項目發現了顯著的上行空間,這表明在未來的技術研究中,鋼廠的產量可能會在PEA基礎案例的基礎上大幅增加,同時保持或提高金屬回收率。此外,測試工作突顯了降低運營成本的機會,並支持了銅精礦中可支付黃金的可能性。重要的是,公司最大限度地減少用水量和限制表面佔地面積的戰略得到了這些有利的加工特性的支持。我們期待進一步提高銅溪項目的價值。”

Next Steps

後續步驟

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:

根據冶金項目的結果和正在進行的勘探結果,該公司的目標是採取以下步驟來繼續提高該項目的價值:

  • 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.
  • 勘探鑽探:第三階段鑽探仍在繼續,重點是對新目標進行偵察鑽探,擴大礦產資源並更好地劃定高品位礦化帶。
  • 黃金檢驗計劃:該公司繼續推進金檢驗計劃,目前的重點是基爾地下區域。該項目的化驗結果與現有的黃金數據相結合,可能支持將黃金納入未來的資源更新和項目經濟學。
  • 冶金評估:在確定新的資源目標後,將進行測試工作。此外,持續的評估將包括進一步的CPF流程表評估和材料類型表徵計劃。
  • 技術報告更新:納入更新的地質、岩土工程、經濟和冶金數據集。

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

有關冶金計劃的概述和其他技術細節,請參閱本新聞稿末尾的附錄。

Qualified Person

合格人員

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").

本新聞稿中包含的科學和技術信息已經過法拉第項目與評估副總裁扎克·奧爾賴特工程師的審查和批准,根據國家儀器43-101——礦業項目披露標準(“NI 43-101”),他被視爲合格人士。

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.

本報告中有關冶金測試工作結果的信息基於並公平地反映了工程師彼得·梅爾弗特先生審查的信息。(Ausenco Engineering擔任法拉第的顧問)。Mehrfert先生是一名合格的冶金學家,擁有豐富的經驗,這與管理和解釋爲獲得NI 43-101合格人員資格而開展的測試工作活動有關。Mehrfert先生根據其所提供的信息,同意將這些事項納入新聞稿。

About Faraday Copper

關於法拉第銅業

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,專注於推進其在美國亞利桑那州的旗艦銅礦項目。Copper Creek項目是北美最大的未開發銅礦項目之一,具有露天和批量地下采礦的潛力。該公司擁有充足的資金,可以實現其關鍵里程碑,並受益於具有高級礦業公司經驗和專業知識的管理團隊和董事會。法拉第在多倫多證券交易所上市,交易代碼爲 “FDY”。

For additional information please contact:

欲了解更多信息,請聯繫:

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

Stacey Pavlova,CFA
投資者關係與傳播副總裁
法拉第銅業公司
電子郵件:info@faradaycopper.com

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

要通過電子郵件接收新聞稿,請使用法拉第網站註冊

Cautionary Note on Forward-Looking Statements

關於前瞻性陳述的警示說明

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.

除歷史事實陳述外,本新聞稿中的一些陳述屬於 “前瞻性陳述”,基於管理層截至發表此類陳述之日的觀點和估計,必然基於估計和假設,這些估計和假設本質上受已知和未知風險、不確定性和其他因素的影響,這些因素可能導致法拉第的實際業績、活動水平、業績或成就與此類前瞻性陳述所表達或暗示的重大差異。此類前瞻性陳述和前瞻性信息特別包括但不限於有關銅回收率和磨機吞吐量可能增加、預期銅精礦質量、球磨機研磨能量減少的可能性、預期的黃金和銅回收率、在未來礦產資源估算和研究中增加黃金的可能性、降低預期加工運營成本的可能性以及Copper Creek地產勘探潛力的陳述。

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.

儘管法拉第認爲此類前瞻性陳述中表達的預期是基於合理的假設,但此類陳述不應以任何方式被解釋爲未來業績的保證,實際業績或發展可能存在重大差異。因此,讀者不應過分依賴前瞻性陳述或信息。

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 .

可能導致實際業績與前瞻性陳述存在重大差異的因素包括但不限於:金屬的市場價格;詳細可行性和技術分析的結論;礦產資源的等級和數量低於預期;獲得監管部門的批准;獲得股東批准;採礦率和回收率;重大資本要求;大宗商品現貨和遠期市場的價格波動;匯率波動;稅收;控制、監管和政治或法拉第開展或可能開展業務的國家的經濟發展;礦產勘探和開發的投機性質、競爭;關鍵員工的流失;勞動力、供應、燃料和設備成本的上漲;當前勘探或開墾活動的實際結果;事故;勞資糾紛;礦產索賠或財產所有權的缺陷或對礦產索賠的競爭;意外延誤和土著人民和其他群體的諮詢和容納權所固有的費用;風險,不確定性和與獲得和維持必要的執照、許可證和授權以及遵守許可要求(包括與Copper Creek房產相關的許可要求)相關的意外延遲;以及法拉第未來收購的不確定性。此外,還存在與礦產勘探、開發和採礦業務相關的風險和危害,包括環境事件和災害、工業事故、異常或意外地層、壓力、塌方、洪水、保險不足或無法獲得保險來承保這些風險的風險,以及法拉第披露文件中包含的 “風險因素”,可在以下網址查閱

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.

本新聞稿不構成向在任何司法管轄區內向任何非法提供此類要約或招標的人出售或徵求購買任何證券的要約。本新聞稿在加拿大、美國或任何其他司法管轄區的法拉第不是,在任何情況下也不得解釋爲招股說明書、發行備忘錄、廣告或證券公開發行。加拿大或美國的證券委員會或類似機構均未審查或以任何方式通過本新聞稿,任何與此相反的陳述均構成犯罪。

APPENDIX: OVERVIEW OF METALLURGICAL PROGRAM AND ADDITIONAL TECHNICAL DETAILS

附錄:冶金項目概述和其他技術細節

Metallurgical Program Overview

冶金項目概述

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.

冶金項目使用了第一和第二階段鑽探的樣品,以補充先前在PEA中總結的測試工作。冶金項目由坎盧普斯的ALS冶金公司開展,由Ausenco Engineering監督。

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:

該測試工作計劃旨在使用在整個資源區域採集的樣本完成以下範圍,主要重點(和有針對性的樣本覆蓋範圍)是露天磨機原料:

  • 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.
  • 已完成對所有樣品的半自磨機粉碎和邦德磨機工作指數(“BMWi”)測試。
  • 對三個氧化物、三個過渡樣本和九個硫化物變異性樣本進行礦物學成分評估。
  • 對硫化物主複合材料和CPF硫化物複合物的粗餾分完成了詳細的礦物學顆粒礦物分析(“PMA”)。
  • 對硫化物複合材料以及硫化物和過渡變異性樣品進行浮選試驗。
  • 在 CPF 硫化物複合材料上進行水浮試驗。
  • 氧化物樣品的柱浸測試和氧化物瓶輥測試。
  • 對飼料樣本和測試產品進行黃金分析。

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.

冶金測試工作的結果將與歷史測試工作相吸收,以構成未來技術研究更新的工藝設計標準的基礎。

Sample Selection and Spatial Context

樣本選擇和空間背景

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.

冶金計劃由三個材料類型領域的15個樣本組成,旨在補充歷史樣本的覆蓋範圍,最終改善PEA中設想的礦山計劃生產概況的代表性。雖然該項目的重點是露天礦物質,但也包括兩個地下樣本。表 1 中列出了示例詳細信息。

Table 1: Metallurgical Sample Details

表 1:冶金樣品詳情

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

材質

遇見 ID

區域

鑽孔 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

銅騎士 SE

OP

23-026

20

37

0.18

0.001

1.0

0.02

MET23-03

山頂

OP

23-021

8

23

0.24

1.0

0.02

過渡

MET23-04

銅騎士

OP

22-016

61

70

0.67

0.001

1.3

0.01

MET23-05

銅王子

OP

22-018

107

124

0.83

0.009

1.2

0.02

MET23-06

銅巨人

OP

22-015

8

14

2.01

0.008

3.4

0.26

硫化物

MET23-07

銅巨人

OP

22-012

33

43

0.34

0.002

0.4

0.02

MET23-08

銅巨人

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

龍骨

UG

23-024

751

765

0.47

0.003

3.5

0.07

MET23-12

龍骨

UG

23-024

939

949

0.62

0.004

5.9

0.02

MET23-13

極點

OP

23-032

75

91

0.59

4.0

0.05

MET23-14

禿頭

OP

23-037

222

232

0.48

0.001

1.8

0.02

MET23-15

猛獁象

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:露天域名被稱爲 “OP”,地下域名被稱爲 “UG”。

Comminution Results

粉碎結果

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 和球磨機能量評估測試是對變異性樣本進行的,其中分別包括行業標準的 SAG 磨機粉碎和 BMWi 測量值。此處所述的研磨粒度是指超過規定粒徑的 80%(“P80”)。結果如表 2 所示。

Table 2: Comminution Results

表 2:粉碎結果

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

材質

A x b

BMWi(千瓦時/噸)

最小/最大

平均值

最小/最大

平均值

氧化物

32/59

45

-

-

過渡

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.

粉碎測試工作的結果證實了PEA的設計基礎,並且在設計公差範圍內。BMWi的業績略低於先前計劃中測得的平均水平。

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.

與PEA的估計值相比,將初級研磨尺寸增加到220 μm可以使球磨機的研磨能量減少約13%。進一步將研磨尺寸增加到350 μm可以使球磨機的研磨能量減少50%。據估計,PEA中的球磨機研磨能量約佔濃縮器總消耗能量的24%。

Flotation Performance - Sulphide Material

浮選性能-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.

對硫化物主複合材料的浮選測試最終導致了在初級研磨尺寸爲 210 μm 下進行的鎖定循環試驗。經確定,低劑量的戊基黃原酸鉀(“PAX”)(與PEA中所考慮的相比,這是一種更便宜且非選擇性的除塵器)適用於更清潔的性能和更高的回收率。結果如表 3 所示。

Table 3: Locked Cycle Test Results

表 3:鎖定循環測試結果

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

初級研磨 (μm)

再研磨 (μm)

飼料檢測 (%)

濃縮物等級 (%)

恢復率 (%)

Mo

Mo

Mo

硫化物大師
複合材料

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.

研磨系列測試表明,與PEA(190 μm)相比,可以進行更粗糙的初級研磨。對CPF硫化物複合材料和變異性樣品進行了更具侵蝕性的初級研磨尺寸進行了評估。測試工作證實,以 350 μm 爲目標只能導致銅回收率略有降低。在測試的研磨粒度下,更粗糙的迴路銅回收率一直很高。結果如表 4 所示。

Table 4: Sulphide Rougher Flotation Results

表 4:硫化物粗糙浮選結果

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

樣本編號

初級研磨 (μm)

粗糙質量 (%)

飼料 (%)

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

變異性樣本平均值

304

10.0

0.55

0.006

94.3

65.9

硫化物主複合材料

210

10.5

0.52

0.007

96.0

93.2

CPF 複合材料

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.

使用低劑量 PAX 完成了對硫化物變異性樣品的開路清潔器浮選測試。銅精礦品位一直很高,平均銅含量爲30.5%。根據鎖定週期測試結果,更清潔的迴路銅回收率預計平均爲98%。對於鉬含量高於 0.003% 的飼料等級,清潔迴路鉬的回收率同樣預計在 86% 至 92% 之間。

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 是一種將加氫過濾器的向上流動與浮選氣泡相結合的技術,以回收粗礦化顆粒,否則這些顆粒在常規泡沫浮選中會向尾礦報告。它適用於經過水力旋流器尺寸分離的較粗糙浮選尾部的清理應用,以去除低等級的精細物質。粗糙的物質進入水浮池,該電池回收粗糙的清除劑濃縮物。加厚的下溢流消耗掉了所有細粉,基本上是自由排水的,可以使用低能耗系統(例如彎曲篩網或大容量帶式過濾器)進行脫水。

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.

對一種硫化物 CPF 複合材料進行了三次散裝粗糙浮選試驗,初級研磨尺寸從 350 μm 到 450 μm 不等。結果如表 5 所示。

Table 5: CPF Results

表 5:公積金結果

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 測試

初級研磨 (μm)

銅回收率 (%)

粗糙尾巴到水力浮動尾巴的百分比

傳統粗糙機

水上浮動的貢獻

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:將93%-95%的進料銅回收爲更粗糙的精礦後,對粗糙的尾部進行了分類,使大約50%的質量報告爲+150 μm的分數,銅含量升高。然後,這些粗尾巴在實驗室的Hydrofloat細胞中進行了處理,該電池將CPF飼料中約60%的銅和鉬回收成含有約12%飼料質量的濃縮物。

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 濃縮物需要重新研磨,然後才能恢復粗糙的進料或類似的傳統浮選階段。包含 CPF 的簡化流程如圖 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 的性能證實,粗磨不會影響銅的回收率。對350 μm初級研磨的粗糙尾部進行CPF清除似乎可以獲得與PEA中提議的具有200 μm初級研磨的傳統浮選迴路相同的整體粗糙迴路銅回收率。額外的研磨能量僅應用於以 CPF 濃縮物形式返回的目標進料質量的 6%。儘管銅回收率的增量改善不大,但CPF迴路的一個顯著優勢是減少了尾礦過濾迴路的噸位。在這種安排中,只有大約 57% 的磨機尾礦向濃縮和過濾迴路報告。該流程表的尾礦處理機會如圖 2 所示。初步結果表明,CPF迴路有可能在不增加尾礦過濾要求的情況下將吞吐量提高到每天45千噸。

Figure 1: Potential Coarse Grind Flowsheet

圖 1:潛在的粗磨流程圖

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

圖 2:傳統浮選和 CPF 添加之間的尾礦處理比較

Flotation Performance - Transition Variability

浮選性能-過渡變異性

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.

對過渡材料變異性樣本的浮選測試支持了目前對銅回收率作爲原料礦物學函數的理解。與第一階段在PEA設計基礎上測試的樣品相比,這三個樣品的冶金性能總體上更好,但是平均銅礦物組合與PEA中使用的估計值相似。冶金數據如表 6 所示。

Table 6: Transition Metallurgical Data

表 6:過渡冶金數據

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

冶金詳情

銅騎士

銅王子

銅巨人

MET23-04

MET23-05

MET23-06

按礦物類型分列的飼料中的銅排出量(%)

黃銅礦/硼礦石

68.2

37.7

19.6

Chalcocite/Covellite

5.4

47.2

53.7

孔雀石/藍晶石

0.7

0.1

11.8

Cu-FeoX

22.4

11.7

9.4

硅酸銅

3.2

3.2

5.6

處理詳情

初級研磨 (μm)

145

157

153

應用硫化處理

沒有

是的

是的

硫化後銅回收率 (%)

-

4.1

22.9

再研磨

是的

沒有

沒有

更清潔的舞臺

3

1

不是必需的

冶金性能

銅飼料等級 (%)

0.67

0.85

2.25

銅回收率 (%)

65.1

81.5

82.0

精礦級銅 (%)

25.8

29.7

32.8

Concentrate Quality

濃縮質量

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.

對最終的散裝濃縮物進行了微量感興趣的元素檢測。結果如表 7 所示。兩個硫化物變異性樣品產生的濃縮物含有足夠的鉬含量,足以支持銅鉬分離迴路的加入。精礦中的黃金含量平均高於最低應付水平。在某些樣本中,銀含量各不相同,含量很高。所有砷含量都遠低於罰款限額。

Table 7: Concentrate Quality of Variability Samples

表 7:變異性樣本的濃縮質量

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

材質

遇見 ID

測定 (%)

化驗 (g/t)

Mo

作爲

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

過渡

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-柱浸測試

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.

歷史上對浸出性能的測試工作有限,只有兩次研究了從氧化物材料中回收銅的情況。PEA中考慮的氧化物回收率是基於有限信息的假設,因此隨後的冶金測試工作包括對各種氧化物來源進行更全面的柱浸測試。

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.

提供了三個 1⁄2 HQ 鑽芯樣品用於浸出試驗。這些樣本代表了來自三個不同礦區的近地表礦化。樣品被粗壓至負32毫米,裂縫分開,子樣本按要求進一步壓碎。

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.

爲每個樣品準備了兩個 10 kg 的測試柱浸出測試裝料,壓碎至最大尺寸爲 32 或 19mm。每個測試電荷都用硫酸固化溶液凝結,然後用稀酸溶液(5 g/L)對色譜柱進行6周(43天)的灌溉。表 8 中列出了總結的冶金結果,浸出物提取曲線以圖形方式顯示在圖 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.

與PEA設計中使用的估計值相比,這三個樣品的銅浸出性能顯示出相當大的改善。最值得注意的是,淨硫酸消耗量遠低於PEA的假設。

Table 8: Column Leach Results

表 8:列浸出結果

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

冶金參數

白熊

銅騎士

山頂

豌豆

MET23-01

MET23-02

MET23-03

設計假設

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

浸出天數

43

43

43

43

43

43

60

原料銅 (%)

0.81

0.69

0.32

0.20

0.23

0.22

0.29

銅萃取 (%)

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

-

淨酸消耗量 (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的壓碎尺寸下,銅的開採量超過80%。只有 MET23-03 對粉碎大小表現出性能敏感度。最初,由於低酸條件,MET23-01 的動力學受到一定阻礙。

Figure 3: Column Leach Extraction Curves

圖 3:柱浸提取曲線

Precious Metal Deportment Assessment

貴金屬舉報評估

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.

與黃金分析計劃(參見2023年10月5日的新聞稿)平行,冶金項目還包括對黃金精礦流出量的評估。可變清潔精礦的金回收率從 37% 到 92% 不等,硫化物主複合材料的鎖定循環測試顯示,最終銅精礦的金回收率爲 73%。結果表明,在0.05 g/t金的飼料品位下,黃金的最終精礦可望回收至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.

精礦中的金等級取決於飼料中的銅金比例。變異性樣本的結果表明,在平均飼料品位爲0.44%銅和精礦質量回收率爲1.4%的情況下,0.05 g/t金的飼料等級將導致銅精礦含有約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.

作爲該計劃的一部分,還對可變性樣本中的銀回收率進行了測試。結果表明,從飼料等級的2g/t銀中回收率爲75%。冶金測試工作表明,黃金和白銀的表現相似。

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

變異性樣本的金和銀分離結果以圖形方式顯示在圖 4 中。

Figure 4: Gold and Silver Recovery

圖 4:黃金和白銀的回升

Mineralogy Overview

礦物學概述

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對變異性樣本完成了礦物學成分評估。這些結果爲岩心測井解釋提供了寶貴的證實,並且與地球化學分析結果一致。銅排放數據有助於了解冶金性能。銅向礦物形態的遷移情況如圖 5 所示。

Figure 5: Copper Deportment by Mineral Form

圖 5:按礦物形態劃分的銅含量

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.

黃鐵礦與硫化銅的比例可能是一個重要的加工參數,因爲低於三的值往往具有較低的重磨能量需求,並且會對冶金性能產生積極影響。變異性樣品的黃鐵礦與硫化銅的比率以圖形方式顯示在圖 6 中相對於銅原料等級。通常,該材料的黃鐵礦含量較低,只有Bald樣品的黃鐵礦含量有所升高。

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

圖 6:黃鐵礦與硫化銅的比例-變異性樣品

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:

對硫化物主複合材料進行了更詳細的 PMA,初級研磨尺寸爲 209 μm。解放特性良好,這支持了傳統浮選測得的冶金性能。具體而言:

  • 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.
  • 硫化銅晶粒的尺寸分佈很粗糙,測量值爲80%,超過142 μm。儘管硫化銅礦物的總體釋放量約爲53%,但約80%的礦物質量位於含有50%或更多硫化銅礦物的顆粒中。高質量的顆粒允許在泡沫浮選中成功附着氣泡。

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.

在初級研磨尺寸爲295 μm的CPF複合材料的餾分上進行了類似的PMA。解放特徵似乎沒有顯著降低。大約75%的硫化銅礦物是含有50%或更多硫化銅礦物的晶粒。

End Notes

結尾筆記

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 初步經濟評估報告載於一份題爲 “北卡羅來納州銅溪項目43-101技術報告和初步經濟評估” 的技術報告中,該報告生效日期爲2023年5月3日,可在公司網站和公司的SEDAR+簡介上查閱。
2 粗糙回收率是指在浮選過程的初始或初級階段回收的有價值礦物的百分比。
3 指應用於硫化物複合材料的研磨尺寸爲350 μm P80,而PEA中使用的研磨尺寸爲190 μm P80。本新聞稿中所述的研磨粒度是指超過規定粒徑的 80%(“P80”)。

SOURCE: Faraday Copper Corp.

來源:法拉第銅業公司


譯文內容由第三人軟體翻譯。


以上內容僅用作資訊或教育之目的,不構成與富途相關的任何投資建議。富途竭力但無法保證上述全部內容的真實性、準確性和原創性。
    搶先評論