Company: M3-PN110087.000
Date: 2012-01-23
Report ID: M3-PN110087.000 Revision 0
Executive Summary
This document outlines the mineral resource statement for the Copper Flat Project, dated January 23, 2012. The report details the proposed recovery methods for copper and molybdenum (moly) minerals, which are largely based on established processes utilized by Quintana in the 1980s but with upgrades to incorporate current mineral processing technology. The proposed process involves crushing and grinding the ore to a fine size, followed by flotation to concentrate sulfide particles. Subsequent steps include regrinding and cleaning to develop copper and moly concentrates, followed by thickening and filtering of these concentrates. Tailings will be disposed of in a lined surface impoundment.
A prefeasibility study for the Copper Flat project is currently in progress, and the recovery methods described herein will be further elaborated upon in the forthcoming prefeasibility report. The primary commodities targeted are copper and molybdenum.
Website: https://themacresourcesgroup.com/copper_flat_mine/evironment-sutainability
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Technical report and processing history
The following archived source profiles have been consolidated here to preserve the project’s processing history and study context.
Copper Flat Project — 2018 Technical Report
Copper Flat Project — 2018 Technical Report
| Company | Not Specified |
| Date | 2018-12-11 |
| Region | Not Specified |
| Commodities | Copper, Molybdenum, Gold |
Executive Summary
This technical report outlines the recovery methods for the Copper Flat Project, focusing on a conventional sulfide flotation mill design. The facility is designed to process 30,000 dry short tons per day of sulfide ore to produce copper and molybdenum concentrates. The process includes primary crushing, SAG and ball mill grinding, gravity recovery for gold, and a multi-stage flotation circuit for copper and molybdenum separation.
The crushing circuit utilizes a primary gyratory crusher followed by a coarse ore stockpile. Grinding is achieved through a semi-autogenous (SAG) mill in closed circuit with a pebble crusher and a ball mill in closed circuit with hydrocyclones. Gravity separation using Knelson-type concentrators is integrated to recover gravity-recoverable gold prior to flotation.
The flotation plant consists of bulk copper-moly flotation followed by a dedicated molybdenite flotation circuit. Final concentrates are thickened, filtered, and dried before shipment. Tailings are managed via hydrocyclone classification for dam construction and water recycling. The project has an estimated mine life of approximately 12 years.
Processing Profile
Website: https://themacresourcesgroup.com/copper_flat_mine
Report Date: 2018-12-11
Region: Not Specified
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Commodity: Copper, Molybdenum, Gold
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Copper Flat Project — 2012 Technical Report
Copper Flat Project — 2012 Technical Report
| Company | Not Specified |
| Date | 2012-08-22 |
| Commodities | Copper, Molybdenum |
Executive Summary
The Copper Flat Project is a sulfide ore processing facility designed to produce copper and molybdenum flotation concentrates. The design basis establishes a throughput of 25,000 dry short tons per day over a mine life of approximately 11.75 years. The processing plant utilizes a conventional sulfide flotation mill circuit to extract the target minerals from the ore.
The process involves primary crushing using a gyratory crusher, followed by grinding in a semi-autogenous (SAG) mill and a ball mill circuit. The ground ore is then processed through bulk copper/molybdenum flotation circuits, followed by a molybdenite separation circuit. Final concentrates are thickened, filtered, and dried before shipment.
Water management includes reclaim water systems and fresh water supply from offsite wells. Reagents such as lime, xanthates, and frothers are used throughout the flotation and dewatering processes. The tailings are managed in a disposal facility with hydrocyclones used to produce sands for dam construction.
Website: https://themacresourcesgroup.com/copper_flat_mine
Report Date: 2012-08-22
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