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Leading Edge Materials Provides Update on Process Development for the Norra Karr REE Project, Sweden
Published by Craig P at 14th September 2017
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Vancouver, Canada – Leading Edge Materials Corp. (“Leading Edge Materials”) or (“the Company”) (TSXV:LEM) (OTCQB: LEMIF) is pleased to provide an update on the Company’s 100% owned Norra Kärr heavy rare earth element (“REE”) project in Sweden. Norra Kärr is a globally significant heavy REE deposit, with a particular enrichment of the magnetic metals dysprosium (Dy) and neodymium (Nd).
Process development research on Norra Kärr completed under the European Commission funded EURARE project has achieved significant technical milestones. Research culminated with the production of approximately 25 kg of mixed REE carbonate produced from a eudialyte concentrate, using a new and optimized hydrometallurgical flowsheet.
EURARE is a 5-year research project co-funded by the European Commission under the Seventh Framework Programme of the European Community for Research, Technological Development and Demonstration Activities (Grant Agreement NMP2-LA-2012-309373). The project has completed research on Norra Kärr and other European REE deposits and will conclude with a final technical meeting in November 2017.
Key Points
Norra Kärr was the subject of a pre-feasibility study in 2015 (see Tasman Metals Ltd press release 21st January 2015 for further information) which estimated an after tax NPV (10%) of US$313 million and defined a range of opportunities for project optimization. The PFS was based on a proven mineral reserve of 23.6 million tonnes at 0.59% TREO with a mine life of 20 years (Tables 1 and 2 for TREO distribution).
Part of the optimization of the Norra Kärr flowsheet has been undertaken within the EURARE project. Magnetic separation was chosen as the preferred beneficiation pathway, in line with the processing research previously completed by Leading Edge Materials that indicated REE recovery of 86%. A total of approximately 500 kg of eudialyte mineral concentrate was produced from beneficiation of more than 5 tonnes of representative mineralized drill core.
In addition, more than 1 tonne of non-magnetic nepheline/feldspar by-product was produced, which has been delivered to Leading Edge Materials in Sweden. High purity nepheline and feldspar are highly sought for use in ceramic, paint, glass, cement and building products, and Leading Edge Materials shall seek to further optimize material for these markets.
Nepheline/feldspar material was not assessed as a saleable material within the 2015 PFS as product development was not adequately progressed at the time of publication. Optimization of a nepheline/feldspar product for sale would significantly reduce the material directed to tailings storage, substantially reduce land use requirements, and is a clear area for on-going research.
Following beneficiation, the eudialyte mineral concentrate was used in an extensive program of hydrometallurgical research, trading off a range of process options. An innovative dry digestion process in the presence of concentrated hydrochloric acid was identified as achieving high extraction of REEs without the formation of silica gel and with the benefit of a very low water requirement. Following bench top testing, the dry digestion process was operated on a mini-pilot plant scale, which extracted and precipitated approximately 25 kg of high purity mixed REE carbonate from two eudialyte sources. A recovery of 91% was calculated for the hydrometallurgical stage.
In addition, this dry digestion technique was successful in the extraction and recovery of zirconium, hafnium (Hf) and niobium (Nb) to a secondary product. Zirconium, hafnium and niobium are high value metals that were not considered as saleable products under the 2015 PFS. Optimization of the extraction and purification of these metals will be the subject of further research.
Blair Way, President and CEO, stated “the research of the EURARE team has delivered a range of opportunities for optimization of the Norra Kärr project at just the right time. The dry digestion hydrometallurgical process is a potential game changer, with the opportunity for efficient recovery of additional high value metals, and a process that may substantially reduce the environmental footprint. While Norra Kärr has long been known as potential source of nepheline, with a large sample now available for additional test work we are in a strong position to identify market opportunities.”
Preparation of additional supporting documentation regarding the Norra Kärr Mining Lease, which was granted in 2013, is underway and is anticipated to be ready for submission to the Swedish Mining Inspectorate during December 2017.
Independent reporting has identified a significant recent rise in REE prices, with the magnetic metals increasing by more than 50% in the year to August 2017. REE supply remains highly concentrated, with China the dominant source, contributing to an extended period of supply uncertainty for Western customers.
The accelerating demand for electric vehicles and the progressive shift to renewable energy is forecast to place increasing demands on REE supply.
Published by Craig P at 14th September 2017
Categories
Tags
Vancouver, Canada – Leading Edge Materials Corp. (“Leading Edge Materials”) or (“the Company”) (TSXV:LEM) (OTCQB: LEMIF) is pleased to provide an update on the Company’s 100% owned Norra Kärr heavy rare earth element (“REE”) project in Sweden. Norra Kärr is a globally significant heavy REE deposit, with a particular enrichment of the magnetic metals dysprosium (Dy) and neodymium (Nd).
Process development research on Norra Kärr completed under the European Commission funded EURARE project has achieved significant technical milestones. Research culminated with the production of approximately 25 kg of mixed REE carbonate produced from a eudialyte concentrate, using a new and optimized hydrometallurgical flowsheet.
EURARE is a 5-year research project co-funded by the European Commission under the Seventh Framework Programme of the European Community for Research, Technological Development and Demonstration Activities (Grant Agreement NMP2-LA-2012-309373). The project has completed research on Norra Kärr and other European REE deposits and will conclude with a final technical meeting in November 2017.
Key Points
- Norra Kärr, with a proven mineral reserve of 23.6 million tonnes at 0.59% total rare earth oxide (“TREO”) (see Tasman Metals Ltd press release 21st January 2015 and Tables 1 and 2 for TREO distribution) was the subject of a pre-feasibility study in 2015 which estimated an after tax NPV (10%) of US$313 million and defined opportunities for project optimization (see Tasman Metals Ltd press release 21st January 2015);
- Hydrometallurgical research completed under EURARE targeted optimized REE extraction from eudialyte, and successfully developed a new process delivering high REE recovery with a substantial reduction in process water consumed. In addition, this new process provided the opportunity for the efficient recovery of the additional high value metals hafnium and zirconium;
- Independent analyst and media reports have described a significant recent rise in REE prices, with the magnetic metals increasing by more than 50% in the year to August 2017. REE supply is heavily dependent on Chinese production and processing, contributing to an extended period of supply uncertainty for Western customers;
Norra Kärr was the subject of a pre-feasibility study in 2015 (see Tasman Metals Ltd press release 21st January 2015 for further information) which estimated an after tax NPV (10%) of US$313 million and defined a range of opportunities for project optimization. The PFS was based on a proven mineral reserve of 23.6 million tonnes at 0.59% TREO with a mine life of 20 years (Tables 1 and 2 for TREO distribution).
Part of the optimization of the Norra Kärr flowsheet has been undertaken within the EURARE project. Magnetic separation was chosen as the preferred beneficiation pathway, in line with the processing research previously completed by Leading Edge Materials that indicated REE recovery of 86%. A total of approximately 500 kg of eudialyte mineral concentrate was produced from beneficiation of more than 5 tonnes of representative mineralized drill core.
In addition, more than 1 tonne of non-magnetic nepheline/feldspar by-product was produced, which has been delivered to Leading Edge Materials in Sweden. High purity nepheline and feldspar are highly sought for use in ceramic, paint, glass, cement and building products, and Leading Edge Materials shall seek to further optimize material for these markets.
Nepheline/feldspar material was not assessed as a saleable material within the 2015 PFS as product development was not adequately progressed at the time of publication. Optimization of a nepheline/feldspar product for sale would significantly reduce the material directed to tailings storage, substantially reduce land use requirements, and is a clear area for on-going research.
Following beneficiation, the eudialyte mineral concentrate was used in an extensive program of hydrometallurgical research, trading off a range of process options. An innovative dry digestion process in the presence of concentrated hydrochloric acid was identified as achieving high extraction of REEs without the formation of silica gel and with the benefit of a very low water requirement. Following bench top testing, the dry digestion process was operated on a mini-pilot plant scale, which extracted and precipitated approximately 25 kg of high purity mixed REE carbonate from two eudialyte sources. A recovery of 91% was calculated for the hydrometallurgical stage.
In addition, this dry digestion technique was successful in the extraction and recovery of zirconium, hafnium (Hf) and niobium (Nb) to a secondary product. Zirconium, hafnium and niobium are high value metals that were not considered as saleable products under the 2015 PFS. Optimization of the extraction and purification of these metals will be the subject of further research.
Blair Way, President and CEO, stated “the research of the EURARE team has delivered a range of opportunities for optimization of the Norra Kärr project at just the right time. The dry digestion hydrometallurgical process is a potential game changer, with the opportunity for efficient recovery of additional high value metals, and a process that may substantially reduce the environmental footprint. While Norra Kärr has long been known as potential source of nepheline, with a large sample now available for additional test work we are in a strong position to identify market opportunities.”
Preparation of additional supporting documentation regarding the Norra Kärr Mining Lease, which was granted in 2013, is underway and is anticipated to be ready for submission to the Swedish Mining Inspectorate during December 2017.
Independent reporting has identified a significant recent rise in REE prices, with the magnetic metals increasing by more than 50% in the year to August 2017. REE supply remains highly concentrated, with China the dominant source, contributing to an extended period of supply uncertainty for Western customers.
The accelerating demand for electric vehicles and the progressive shift to renewable energy is forecast to place increasing demands on REE supply.