AVZ Minerals Strong Outperformer (Seite 863)
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Antwort auf Beitrag Nr.: 61.496.669 von alessio19 am 16.09.19 20:08:29Ist alles dort so schlecht,dass man jetzt ermutigt ist? und warscheinlich?
Nix ausser wieder ein ermutigender Börsenbrief,deren Schreiber vom Unternehmen bezahlt wird
Nix ausser wieder ein ermutigender Börsenbrief,deren Schreiber vom Unternehmen bezahlt wird
AVZ Minerals rapidly dewaters Roche Dure open pit as phase-one DFS test work at Manono Lithium-Tin Project is completed
The results of phase-one will allow the company to rapidly advance its definitive feasibility study, expected to be complete in the first quarter of 2020.
AVZ Minerals Ltd (ASX:AVZ) has completed the comprehensive phase-one metallurgical test work program at its Manono Lithium and Tin Project, increasing confidence in the Democratic Republic of Congo-based project.
Confirmatory tests are now underway after phase-one work, which focused on characterisation and recovery of lithia, tested conventional laboratory heavy liquid separation (HLS) techniques and both laboratory-scale and industrial-scale dense medium separation (DMS).
https://www.proactiveinvestors.com.au/companies/news/902716/…
Better understanding of ore characteristics
The test work confirmed finer crush material produced better lithia grades and recoveries while sighter scale-up tests using an industrial-size DMS pilot plant also confirmed confidence in laboratory-scale equipment and procedures.
High pressure grinding roll (HPGR) tests performed on a 300-kilogram sample of Roche Dure ore to complement comminution test work showed it has similar comminution characteristics and rock strengths to other well-kn0wn lithium pegmatite ores.
DFS work gaining momentum
The company has also commissioned the newly purchased Sykes dewatering pump at its Roche Dure open pit.
Roche Dure’s dewatering is part of its definitive feasibility study field program, which is gaining momentum with accelerated dewatering, geotechnical and hydrogeological consultants being engaged and pit floor drilling being considered and tendered.
Opportunity to improve performance in phase-two
AVZ managing director Nigel Ferguson said the company was seeing encouraging results from the metallurgical test work undertaken so far.
He said: “In the DMS100 test, a 5.56-millimetre crush produced a lithium oxide recovery of 59% at a spodumene concentrate (SC) grade of 6.1%, while at a finer 3.35 millimetre crush the results were even better, delivering a lithium recovery of 66% at a SC grade of 5.8%.
“Lithia recoveries were approximately 2% lower in the DMS250 test work at a 5.8% grade and 4% lower recovery at 6% grade.
“Lithium oxide at 5.8% shows 60% recovery and 6.1% grade with 55% recovery.
“This suggests there is an opportunity to improve DMS250 performance by optimising test parameters in the phase-two confirmatory program based on equipment performance.”
Deleterious elements successfully reduced
In order to scale the HLS results, DMS100 testing focused on both crush sizes and testing was performed with and without the mica removal reflux classification process, to ascertain the impact on product grade and recovery.
Roche Dure ore is considered sufficiently low in mica to conceivably present as a problem mineral in the final product specification.
However, the reflux classification process proved successful in reducing both mica volumes and iron grades well below acceptable levels in the final concentrate.
Further optimisation of recovery process
Ferguson added: “There will be an opportunity to recover a tin rich stream from the lithia concentrate stream with simple gravity separation techniques employed.
“Additional lithia recovery optimisation may be gained through an opportunity to feed a coarser product to the HPGR or pre-screening prior to crushing by HPGR.
“To optimise DMS lithia recovery when targeting a coarser 5.56-millimetre DMS feedstock, a two-size fraction DMS circuit may be beneficial.
“This will be tested in phase-two along with examining 0.3-millimetre DMS cut-off size instead of 0.5 millimetres.
“Further optimisation of the larger DMS250 industrial scale test will be completed in the next round of work.
“We have not investigated, as yet, any further downstream treatment to increase purity of grade such as optical sorting, magnetic separation or other methodologies.”
Roche Dure pit dewatering
The five-tonne Allight Sykes CP300 high-volume dewatering pump was commissioned at Roche Dure in early September.
The pump had almost immediate results on the reduction of Roche Dure’s water level.
Combined with a pontoon-based spindle pump, the Sykes pump can be manoeuvred over deeper ‘holes’ in the pit floor to ensure there are no flooded pit floor depressions that will come to light as the water level drops further.
Pit potentially emptied quicker than anticipated
Ferguson said the arrival of the Sykes discharge pump combined with the smaller spindle pump had demonstrated an acceleration of the dewatering rates at Roche Dure.
He continued: “With both pumps combined we were able to draw down the greatest surface area at the top of the water-filled pit by 0.75 metres in 55 hours.
“As bathymetric work indicates, the pit is a maximum of approximately 25 metres deep – we anticipate the pit may be emptied quicker than the 3 months initially anticipated.
“Planning has therefore been finalised to drill a sufficient number of tonnes of the pit floor to ‘bank’ the project.
“This is estimated at 25 million tonnes of inferred resource within the pit floor being brought to a measured resource category.”
Phase-two test work to assist appraising final mine design
Johannesburg-based geotechnical company Middindi Consulting has been awarded the phase-two geotechnical contract and will collect DFS-level information to assist in wall angle appraisal for the final mine design.
Field studies will require mapping of hanging-wall overburden, along with specialist mapping of pegmatitic outcrops exposed near the current pit edges, as well as in the soon to be exposed pit walls.
Drilling of specialised orientated drillholes for statistical analyses of discontinuities, and collection of samples for rock strength tests, will be carried out in the last quarter of 2019.
Potential sites for the processing plant and tailings facilities to support a minimum 20-year mine life have begun appraisal, with encouraging initial reconnaissance results.
This work will continue into the last quarter of this year and is being undertaken by GRES Engineering, which will optimise the facilities’ location under the guidance of AVZ.
Next steps
Along with metallurgical optimisation, the phase-two program aims to:
Verify phase-one process flowsheet and design parameters;
Optimise the industrial size DMS250 operation to maximise recovery;
Examine ore variability and its effects on economic performance;
Generate representative spodumene concentrates for marketing assessment and valueadding test programs;
Perform all necessary engineering and vendor testing; and
Provide typical spodumene concentrates for further lithium carbonate and lithium hydroxide feasibility studies.
The results of phase-one will allow the company to rapidly advance its definitive feasibility study, expected to be complete in the first quarter of 2020.
AVZ Minerals Ltd (ASX:AVZ) has completed the comprehensive phase-one metallurgical test work program at its Manono Lithium and Tin Project, increasing confidence in the Democratic Republic of Congo-based project.
Confirmatory tests are now underway after phase-one work, which focused on characterisation and recovery of lithia, tested conventional laboratory heavy liquid separation (HLS) techniques and both laboratory-scale and industrial-scale dense medium separation (DMS).
https://www.proactiveinvestors.com.au/companies/news/902716/…
Better understanding of ore characteristics
The test work confirmed finer crush material produced better lithia grades and recoveries while sighter scale-up tests using an industrial-size DMS pilot plant also confirmed confidence in laboratory-scale equipment and procedures.
High pressure grinding roll (HPGR) tests performed on a 300-kilogram sample of Roche Dure ore to complement comminution test work showed it has similar comminution characteristics and rock strengths to other well-kn0wn lithium pegmatite ores.
DFS work gaining momentum
The company has also commissioned the newly purchased Sykes dewatering pump at its Roche Dure open pit.
Roche Dure’s dewatering is part of its definitive feasibility study field program, which is gaining momentum with accelerated dewatering, geotechnical and hydrogeological consultants being engaged and pit floor drilling being considered and tendered.
Opportunity to improve performance in phase-two
AVZ managing director Nigel Ferguson said the company was seeing encouraging results from the metallurgical test work undertaken so far.
He said: “In the DMS100 test, a 5.56-millimetre crush produced a lithium oxide recovery of 59% at a spodumene concentrate (SC) grade of 6.1%, while at a finer 3.35 millimetre crush the results were even better, delivering a lithium recovery of 66% at a SC grade of 5.8%.
“Lithia recoveries were approximately 2% lower in the DMS250 test work at a 5.8% grade and 4% lower recovery at 6% grade.
“Lithium oxide at 5.8% shows 60% recovery and 6.1% grade with 55% recovery.
“This suggests there is an opportunity to improve DMS250 performance by optimising test parameters in the phase-two confirmatory program based on equipment performance.”
Deleterious elements successfully reduced
In order to scale the HLS results, DMS100 testing focused on both crush sizes and testing was performed with and without the mica removal reflux classification process, to ascertain the impact on product grade and recovery.
Roche Dure ore is considered sufficiently low in mica to conceivably present as a problem mineral in the final product specification.
However, the reflux classification process proved successful in reducing both mica volumes and iron grades well below acceptable levels in the final concentrate.
Further optimisation of recovery process
Ferguson added: “There will be an opportunity to recover a tin rich stream from the lithia concentrate stream with simple gravity separation techniques employed.
“Additional lithia recovery optimisation may be gained through an opportunity to feed a coarser product to the HPGR or pre-screening prior to crushing by HPGR.
“To optimise DMS lithia recovery when targeting a coarser 5.56-millimetre DMS feedstock, a two-size fraction DMS circuit may be beneficial.
“This will be tested in phase-two along with examining 0.3-millimetre DMS cut-off size instead of 0.5 millimetres.
“Further optimisation of the larger DMS250 industrial scale test will be completed in the next round of work.
“We have not investigated, as yet, any further downstream treatment to increase purity of grade such as optical sorting, magnetic separation or other methodologies.”
Roche Dure pit dewatering
The five-tonne Allight Sykes CP300 high-volume dewatering pump was commissioned at Roche Dure in early September.
The pump had almost immediate results on the reduction of Roche Dure’s water level.
Combined with a pontoon-based spindle pump, the Sykes pump can be manoeuvred over deeper ‘holes’ in the pit floor to ensure there are no flooded pit floor depressions that will come to light as the water level drops further.
Pit potentially emptied quicker than anticipated
Ferguson said the arrival of the Sykes discharge pump combined with the smaller spindle pump had demonstrated an acceleration of the dewatering rates at Roche Dure.
He continued: “With both pumps combined we were able to draw down the greatest surface area at the top of the water-filled pit by 0.75 metres in 55 hours.
“As bathymetric work indicates, the pit is a maximum of approximately 25 metres deep – we anticipate the pit may be emptied quicker than the 3 months initially anticipated.
“Planning has therefore been finalised to drill a sufficient number of tonnes of the pit floor to ‘bank’ the project.
“This is estimated at 25 million tonnes of inferred resource within the pit floor being brought to a measured resource category.”
Phase-two test work to assist appraising final mine design
Johannesburg-based geotechnical company Middindi Consulting has been awarded the phase-two geotechnical contract and will collect DFS-level information to assist in wall angle appraisal for the final mine design.
Field studies will require mapping of hanging-wall overburden, along with specialist mapping of pegmatitic outcrops exposed near the current pit edges, as well as in the soon to be exposed pit walls.
Drilling of specialised orientated drillholes for statistical analyses of discontinuities, and collection of samples for rock strength tests, will be carried out in the last quarter of 2019.
Potential sites for the processing plant and tailings facilities to support a minimum 20-year mine life have begun appraisal, with encouraging initial reconnaissance results.
This work will continue into the last quarter of this year and is being undertaken by GRES Engineering, which will optimise the facilities’ location under the guidance of AVZ.
Next steps
Along with metallurgical optimisation, the phase-two program aims to:
Verify phase-one process flowsheet and design parameters;
Optimise the industrial size DMS250 operation to maximise recovery;
Examine ore variability and its effects on economic performance;
Generate representative spodumene concentrates for marketing assessment and valueadding test programs;
Perform all necessary engineering and vendor testing; and
Provide typical spodumene concentrates for further lithium carbonate and lithium hydroxide feasibility studies.
AVZ Minerals meldet ermutigende Metallurgieresultate
AVZ Minerals (ASX AVZ / WKN A0MXC7) treibt sein riesiges Lithiumprojekt Manono weiter in Richtung Machbarkeitsstudie voran. Dazu gehören auch Studien zur Metallurgie, von denen das Unternehmen heute Ermutigendes berichten konnte.
Auch wenn viele Anleger sich häufig auf Gehalt und Größe einer Lagerstätte konzentrieren – beides bei Manono eindeutig Weltklasse – spielt doch die Metallurgie ebenfalls eine bestimmende Rolle. Hier entscheidet sich, wie hoch die Ausbringungsrate des jeweiligen Minerals aus dem Gestein ist und welche Verfahren verwendet werden können. Was wiederum große Auswirkungen auf die zukünftig anfallenden Kosten haben kann.
AVZs Managing Director Nigel Ferguson betrachtet die heute präsentierten Ergebnisse der ersten Testphase als „sehr ermutigend“ und weist darauf hin, dass noch einiges Potenzial auf eine Optimierung der Resultate besteht.
Wie das Unternehmen mitteilte, unterstützen DMS-Testarbeiten (Dense Media Separation, Schwimm-Sink-Scheiden) die HLS-Testarbeiten (Heavy Liquid Separation, Schwimm-Sink-Scheiden) und zeigen, dass die feinste Korngröße von 3,35 mm im Vergleich zu den getesteten gröberen Korngrößen bessere Lithiumgehalte und Ausbringungsraten liefert.
Dabei lieferten vergleichende HLS- und DMS-Testarbeiten im Labormaßstab, die an Korngrößen von 5,6 mm und 3,35 mm durchgeführt wurden, ein mehr als 6,0%iges Spodumenkonzentratprodukt (SC) mit niedrigem Eisen- und Glimmergehalt. So genannte Sighter-Tests in größerem Maßstab mit einer 250-mm-Zyklon-DMS-Pilotanlage in industrieller Größe bestätigen zudem das Vertrauen in Geräte und Verfahren im Labormaßstab.
Darüber hinaus bestätigen Analysen von DMS-Konzentraten Eisen- und Glimmerkonzentrationen, die innerhalb der Grenzwerte für Lithiumkonzentrate von chemischer Qualität liegen.
Wie AVZ zudem meldete, ergaben Vorläufige HPGR-Testarbeiten (High Pressure Grinding Roll, Zerkleinerung mittels Hochdruck-Mahlwalze), dass das Material ähnliche Zerkleinerungseigenschaften und Gesteinsfestigkeiten aufweist wie andere bekannte Lithium-Pegmatit-Erze.
Die Ergebnisse der zur Bestätigung der HLS-Testbeobachtungen durchgeführten Tests für eine mögliche Zinnausbringung stehen noch aus. Herr Ferguson erklärte aber, dass erste Testarbeiten an groben Lithiumkonzentraten eine Zinnausbringung von ca. 32% lieferten, wodurch ein 4,7%iges gröberes SnO2-Konzentrat erhalten wurde. Eine Erhöhung des Zinngehalts durch Reinigung ohne signifikanten Zinnverlust sei aufgrund der beobachteten SnO2-Freisetzung wahrscheinlich.
https://goldinvest.de/aus-der-redaktion/34-avz-minerals-ltd/…
AVZ Minerals (ASX AVZ / WKN A0MXC7) treibt sein riesiges Lithiumprojekt Manono weiter in Richtung Machbarkeitsstudie voran. Dazu gehören auch Studien zur Metallurgie, von denen das Unternehmen heute Ermutigendes berichten konnte.
Auch wenn viele Anleger sich häufig auf Gehalt und Größe einer Lagerstätte konzentrieren – beides bei Manono eindeutig Weltklasse – spielt doch die Metallurgie ebenfalls eine bestimmende Rolle. Hier entscheidet sich, wie hoch die Ausbringungsrate des jeweiligen Minerals aus dem Gestein ist und welche Verfahren verwendet werden können. Was wiederum große Auswirkungen auf die zukünftig anfallenden Kosten haben kann.
AVZs Managing Director Nigel Ferguson betrachtet die heute präsentierten Ergebnisse der ersten Testphase als „sehr ermutigend“ und weist darauf hin, dass noch einiges Potenzial auf eine Optimierung der Resultate besteht.
Wie das Unternehmen mitteilte, unterstützen DMS-Testarbeiten (Dense Media Separation, Schwimm-Sink-Scheiden) die HLS-Testarbeiten (Heavy Liquid Separation, Schwimm-Sink-Scheiden) und zeigen, dass die feinste Korngröße von 3,35 mm im Vergleich zu den getesteten gröberen Korngrößen bessere Lithiumgehalte und Ausbringungsraten liefert.
Dabei lieferten vergleichende HLS- und DMS-Testarbeiten im Labormaßstab, die an Korngrößen von 5,6 mm und 3,35 mm durchgeführt wurden, ein mehr als 6,0%iges Spodumenkonzentratprodukt (SC) mit niedrigem Eisen- und Glimmergehalt. So genannte Sighter-Tests in größerem Maßstab mit einer 250-mm-Zyklon-DMS-Pilotanlage in industrieller Größe bestätigen zudem das Vertrauen in Geräte und Verfahren im Labormaßstab.
Darüber hinaus bestätigen Analysen von DMS-Konzentraten Eisen- und Glimmerkonzentrationen, die innerhalb der Grenzwerte für Lithiumkonzentrate von chemischer Qualität liegen.
Wie AVZ zudem meldete, ergaben Vorläufige HPGR-Testarbeiten (High Pressure Grinding Roll, Zerkleinerung mittels Hochdruck-Mahlwalze), dass das Material ähnliche Zerkleinerungseigenschaften und Gesteinsfestigkeiten aufweist wie andere bekannte Lithium-Pegmatit-Erze.
Die Ergebnisse der zur Bestätigung der HLS-Testbeobachtungen durchgeführten Tests für eine mögliche Zinnausbringung stehen noch aus. Herr Ferguson erklärte aber, dass erste Testarbeiten an groben Lithiumkonzentraten eine Zinnausbringung von ca. 32% lieferten, wodurch ein 4,7%iges gröberes SnO2-Konzentrat erhalten wurde. Eine Erhöhung des Zinngehalts durch Reinigung ohne signifikanten Zinnverlust sei aufgrund der beobachteten SnO2-Freisetzung wahrscheinlich.
https://goldinvest.de/aus-der-redaktion/34-avz-minerals-ltd/…
Antwort auf Beitrag Nr.: 61.493.810 von bcgk am 16.09.19 15:07:49neben AVZ habe ich noch andere Werte im Depot, die im Peer-Group-Vergleich massiv hinten nach hängen (z.B. Graphex). Aber das ist alles relativ. Langfristig gleicht sich das aus, entweder durch steigende Kurse oder sinkende "operative Realität"
Roughly, Valuation per JORC lithium resource:
MIN, Wodgina was priced in at around $650/ton (considering non-cash items).
KDR, is priced at around $540/ton
PLS, currently is priced at around $256/ton, excluding CAPEX, would be around $180/ton
LTR, is priced at around $150/ton for KV alone.
AVZ, is priced at around $28/ton for Roche Dure alone.
AVZ is currently priced at 81% - 95% discount to ASX peers as listed above, despite its largest size and highest grade.
MIN, Wodgina was priced in at around $650/ton (considering non-cash items).
KDR, is priced at around $540/ton
PLS, currently is priced at around $256/ton, excluding CAPEX, would be around $180/ton
LTR, is priced at around $150/ton for KV alone.
AVZ, is priced at around $28/ton for Roche Dure alone.
AVZ is currently priced at 81% - 95% discount to ASX peers as listed above, despite its largest size and highest grade.
Trading Spotlight
Antwort auf Beitrag Nr.: 61.487.933 von schmidileins2713 am 15.09.19 15:29:50Das ist aber noch ein sehr langer Weg bis AVZ sie zum Hauptgewinn führt oder den ein oder anderen beim Wunschkurs von 0,53€ zum Millionär macht😎
Ersmal sollte man die Basics begreifen und umsetzen bevor man nach den Sternen greift😎
Ersmal sollte man die Basics begreifen und umsetzen bevor man nach den Sternen greift😎
Antwort auf Beitrag Nr.: 61.487.563 von capo70 am 15.09.19 13:14:33Ich bin zwar auch in AVZ investiert, aber die letzte news mit der 2.pumpe ist wirklich ernüchternd. Größte und beste Lgst. hin oder her- nur bei billigst Li-Preisen hat man hier eine Chance zu überleben. Man kann nur hoffen, dass der Li-Preis unten bleibt, dann gibt es hier eine reelle Chance auf einen Hauptgewinn.😎
Antwort auf Beitrag Nr.: 61.486.928 von centucky am 15.09.19 09:50:49Nein,Lügengeschichte nicht,hat auch keiner behauptet,aber es sind doch mehr Fragezeichen voller vollmundiger Versprechungen als erwartet,mehr nicht😎
Wie kann es sein,dass man ein Animationsvideo so abfeiert,als würde es real vor Ort existieren?
Nur ein Beispiel 😎
Wie kann es sein,dass man ein Animationsvideo so abfeiert,als würde es real vor Ort existieren?
Nur ein Beispiel 😎
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