This technical report presents mineral processing and recovery methods considered for the Rio Verde potash properties in the Sergipe Basin, Brazil.
Report context
The report, dated 02 August 2011, was prepared for Rio Verde Minerals Development Corp. by ERCOSPLAN Ingenieurgesellschaft Geotechnik und Bergbau mbH. It addresses mineral processing and metallurgical testing for the project’s mineral properties in the Sergipe Basin, Brazil. The processing sections describe both solution mining and conventional mining approaches for carnallitite and sylvinite ores.
Processing route
Brine Processing from Carnallitite Solution Mining
The report identifies two processing routes for brine derived from carnallitite solution mining: a carnallite processing route and a sylvite processing route. Both routes are described as alternatives for treating the solution mining brine.
Carnallite Processing Route
The carnallite processing route is outlined as one option for treating brine from carnallitite solution mining. No further details of the process flowsheet, reagents, or equipment are provided in the available report sections.
Sylvite Processing Route
The sylvite processing route is described as an alternative to the carnallite processing route for treating brine from carnallitite solution mining. No flowsheet details, operating conditions, or performance data are included in the available report sections.
KCl Beneficiation Alternative
A KCl beneficiation alternative is identified as a further processing option. The report presents a comparison of both the carnallite and sylvite options relative to this beneficiation alternative.
Comparison of Both Options
The report includes a comparison of the carnallite and sylvite processing options versus the KCl beneficiation alternative. No specific comparison results, economic analysis, or recommended selection are presented in the available sections.
Solid Ore Processing from Conventional Carnallitite Mining
The report addresses solid ore processing from conventional carnallitite mining. No process flowsheet, unit operations, or design parameters are provided in the available report sections.
Solid Ore Processing from Conventional Sylvinite Mining
The report addresses solid ore processing from conventional sylvinite mining. No process flowsheet, unit operations, or design parameters are provided in the available report sections.
Key reported parameters
| Parameter | Reported Value | Basis |
|---|---|---|
| Processing routes considered | Carnallite processing, sylvite processing, KCl beneficiation | Proposed design |
| Mining method (processing feed source) | Solution mining (carnallitite) | Proposed design |
| Mining method (processing feed source) | Conventional mining (carnallitite, sylvinite) | Proposed design |
| Mineral processing approach | Brine processing (solution mining) | Proposed design |
| Mineral processing approach | Solid ore processing (conventional mining) | Proposed design |
Project website: https://talonmetals.com/talon-closes-transaction-with-rio-verde-minerals-on-the-sergipe-potash-project/
Technical qualifications
The available report sections do not contain specific processing flowsheets, mass balances, reagent consumptions, energy requirements, or metallurgical test results. No historical operating data from comparable operations is presented in the processing sections. The report does not describe any pilot plant or laboratory testwork results for the processing routes considered.
Source: Technical Report, RIO VERDE’s Mineral Properties in the Sergipe Basin, Brazil, 02 August 2011, Sections 17 Recovery Methods and 17.1–17.2.
