The 2024 technical report describes a proposed processing route for Coringa ore based on metallurgical testwork and historical processing data from the Palito plant.
Report context
This technical report for the Coringa Gold Project, located in Pará State, Brazil, was prepared for Serabi Gold PLC with a report date of November 13, 2024, and an effective date of April 16, 2024. The report is a Preliminary Economic Assessment (PEA) prepared under NI 43-101 standards. The processing and metallurgical information presented herein is derived from metallurgical testwork programs, historical operating data from processing Coringa ore at the Palito plant, and a proposed design for a dedicated Coringa processing facility.
Processing route
Metallurgical testwork programs
Metallurgical testing was conducted across multiple laboratories and programs. SGS Geosol performed initial testwork. Rdi conducted additional testing. TDP completed a separate testwork program. Plenge performed further metallurgical testing. Andritz conducted solid/liquid separation testing. Ore sorting testwork was also completed. A summary of the metallurgical samples is provided, including sample locations and mineralogy.
Proposed Coringa process description
The report includes a process description for Coringa ores, though specific flowsheet details are not fully elaborated in the available sections. The proposed design is based on the metallurgical testwork results and projected metallurgical performance.
Historical processing at Palito plant
The report documents that Coringa ore was historically processed at the Palito plant, and industrial performance data from this campaign is available. The Palito plant description includes the following unit operations: crushing, ore sorting, grinding, intensive leaching, flotation of Palito ore, CIP cyanidation, elution and gold refining, carbon regeneration, and cyanide detoxification. Consumable requirements and plant performance data for the Palito plant are also reported.
Projected metallurgical performance
The report includes a section on projected metallurgical performance, which appears to be derived from the combination of testwork results and historical operating data. Specific performance metrics are not provided in the available text.
Comments on metallurgical testwork
A section providing comments on the metallurgical testwork is included in the report, though detailed commentary is not available in the excerpted material.
Key reported parameters
| Parameter | Value | Basis |
|---|---|---|
| Metallurgical testwork laboratories | SGS Geosol, Rdi, TDP, Plenge, Andritz | Testwork |
| Palito plant unit operations | Crushing, ore sorting, grinding, intensive leaching, flotation, CIP cyanidation, elution, carbon regeneration, detoxification | Historical operating data |
| Ore sorting testwork | Completed | Testwork |
| Solid/liquid separation testwork | Completed (Andritz) | Testwork |
Project website: https://www.serabigold.com/operations/coringa-gold-project/
Technical qualifications
The processing information in this report is based on metallurgical testwork programs, historical operating data from processing Coringa ore at the Palito plant, and a proposed design. Specific metallurgical performance data, flowsheet details, and economic parameters are not provided in the available sections. The report notes that it is a Preliminary Economic Assessment and includes sections on risks and opportunities, but these details are not elaborated in the processing sections excerpted.
Source: Serabi Gold PLC, Coringa Project Preliminary Economic Assessment NI 43-101 Technical Report, Pará State, Brazil, Report Date November 13, 2024, Effective Date April 16, 2024, Sections 13 and 17.
