This technical report provides updated mineral processing and metallurgical information for the Mpama North and Mpama South deposits within the Bisie Tin Complex in the Democratic Republic of Congo.
Report context
This Updated Technical Report for the Bisie Tin Complex, North Kivu Province, Democratic Republic of Congo, was prepared for Alphamin Resources Corp. with a report date of 22 April 2022. The document covers mineral processing and metallurgical testing for both the Mpama North and Mpama South deposits. Processing and recovery methods are described for ore handling and preparation, high grade gravity treatment, low grade gravity treatment, filtration, fine tin recovery plant and tailings, services, and reagents.
Processing route
Mpama North test work
Original Mpama North test work included mineralogical analysis and metallurgical analysis. Updated Mpama North front-end engineering and design (feed) test work comprised additional mineralogical analysis and metallurgical analysis. Mpama North fine tin recovery test work included mineralogical analysis and metallurgical analysis.
Mpama South test work
Mpama South test work included mineralogical analysis and metallurgical analysis.
Ore handling and preparation
The processing route involves ore handling and preparation as the first stage.
High grade gravity treatment
High grade gravity treatment is a component of the processing circuit.
Low grade gravity treatment
Low grade gravity treatment is included as a separate processing stage.
Filtration
Filtration is used in the process flowsheet.
Fine tin recovery plant and tailings
A fine tin recovery plant is included, along with tailings handling.
Services and reagents
Services and reagents are part of the plant design.
Key reported parameters
| Parameter | Unit | Basis |
|---|---|---|
| Mpama North original test work: mineralogical analysis | Qualitative | Historical testwork |
| Mpama North original test work: metallurgical analysis | Qualitative | Historical testwork |
| Updated Mpama North front-end engineering and design (feed) test work: mineralogical analysis | Qualitative | Proposed design testwork |
| Updated Mpama North front-end engineering and design (feed) test work: metallurgical analysis | Qualitative | Proposed design testwork |
| Mpama North fine tin recovery test work: mineralogical analysis | Qualitative | Testwork |
| Mpama North fine tin recovery test work: metallurgical analysis | Qualitative | Testwork |
| Mpama South test work: mineralogical analysis | Qualitative | Testwork |
| Mpama South test work: metallurgical analysis | Qualitative | Testwork |
Project website: https://www.alphaminresources.com/operations/
Technical qualifications
This report was prepared for Alphamin Resources Corp. only and may not be transmitted to any other party, in whole or in part, in any form without the written permission of Bara Consulting (Pty) Ltd. The original processing sections are identified as sections 1.8 through 1.14 of the source report. The recovery methods section (section 17) includes descriptions of ore handling and preparation, high grade gravity treatment, low grade gravity treatment, filtration, fine tin recovery plant and tailings, services, and reagents. The report distinguishes between original Mpama North test work, updated Mpama North front-end engineering and design (feed) test work, Mpama North fine tin recovery test work, and Mpama South test work.
Source: Updated Technical Report for the Bisie Tin Complex, North Kivu Province, Democratic Republic of Congo, Report Number 2022-111, Report Date 22 April 2022.
