This report presents the mineral processing and metallurgical testing information for the Henty Gold Mine in Tasmania, Australia, as documented in the NI 43-101 technical report prepared for Catalyst Metals Ltd with an effective date of 30 April 2023.
Report context
This technical report, prepared for Catalyst Metals Ltd, documents the Henty Gold Mine property located in Tasmania, Australia. The report effective date is 30 April 2023. The original technical report (Report No. R168.2023) was prepared in accordance with NI 43-101 standards. The following information is drawn exclusively from Sections 13 (Mineral Processing and Metallurgical Testing) and 17 (Recovery Methods) of the source document.
Processing route
Comminution
The report identifies comminution as a distinct processing step, with the process description in Section 17.1 detailing the crushing and grinding stages. The crushing circuit and grinding circuit are listed as separate process components under the Process Description heading.
CIL Circuit
The processing route includes a Carbon-in-Leach (CIL) circuit as one of the major process stages. Section 17.1.2 is specifically titled "CIL Circuit" and describes the cyanidation leaching process for gold recovery from the ground ore.
Elution Circuit
Following the CIL circuit, the process includes an elution circuit (Section 17.1.3) for gold recovery from loaded carbon. This circuit is described as part of the overall gold recovery process.
Thickening and Detox Circuit
The processing route concludes with a thickening and detox circuit (Section 17.1.1 under Recovery Methods) for tailings management prior to disposal.
Key reported parameters
The following table presents the key processing parameters as reported in the original technical report. The basis column distinguishes between design basis, actual operating data, and testwork results as documented in the source document.
| Parameter | Unit | Value | Basis |
|---|---|---|---|
| Crushing circuit | , | Included in process description | Proposed design (Section 17.1) |
| Grinding circuit | , | Included in process description | Proposed design (Section 17.1.1) |
| CIL circuit | , | Included in process description | Proposed design (Section 17.1.2) |
| Elution circuit | , | Included in process description | Proposed design (Section 17.1.3) |
| Thickening/detox circuit | , | Included in process description | Proposed design (Section 17.1.1) |
| Plant production performance | , | Referenced in Section 17.2 | Historical operating data |
| Tailings management | , | Referenced in Section 17.3 | Proposed design/actual |
| Metallurgical testing | , | Referenced in Section 13 | Testwork results |
| Comminution testwork | , | Referenced in Section 13.4 | Testwork results |
| Gold recovery testwork | , | Referenced in Section 13.5 | Testwork results |
| Dewatering testwork | , | Referenced in Section 13.6 | Testwork results |
| Processing schedule | , | Referenced in Section 13.7 | Proposed design |
Project website: https://www.miningweekly.com/article/kaiser-to-acquire-henty-gold-mine-in-a316m-deal-with-catalyst-2025-03-24
Technical qualifications
The original report does not provide specific design throughput rates, recovery percentages, reagent consumptions, or detailed flowsheet parameters in the sections provided. The process description is presented as a general overview of the proposed processing route without quantitative design criteria or performance data in the Sections 13 and 17 excerpts available. Section 17.2 ("Plant Production Performan" in the original text) and Section 17.3 ("Tailings") are listed but the detailed content was not fully reproduced in the provided report excerpt.
The metallurgical testing section (Section 13) references work on comminution, gold recovery, dewatering, and processing schedule, but the specific test results, sample details, and metallurgical domain information are not fully detailed in the available excerpt.
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*Source: Henty Gold Mine, Tasmania, Australia Technical Report, NI 43-101, prepared for Catalyst Metals Ltd, Report No. R168.2023, Effective Date 30 April 2023, Sections 13 and 17.*
