ASX-listed Peak Resources
Ltd has begun pilot operation of its beneficiation
flowsheet on a 66 tonne bulk sample of weathered bastnaesite
rare earth ore from the Ngulla project in Tanzania.
The process consists of two-stage
flotation with intermediate regrinding. Peak said that the
flowsheet is simple, robust and effective as a means of
achieving an up-to eight times concentration upgrade on the run
of mine grade of rare earths.
previously known as Ammtec, was selected to pilot the plant.
Work conducted during the piloting will be fed into
Ngulla’s bankable feasibility study.
Also listed on the ASX, Greenland
Minerals and Energy Ltd (GMEL) has successfully
completed refinery piloting for its Kvanefjeld project in
Carried out in Finland by Outotec Pori
Research Laboratories, an arm of Outotec Oyj,
as part of the European Commission (EC)-funded EURARE
programme, GMEL said that the research had resulted in outcomes
consistent with, and in some cases exceeding, the feasibility
Valuable operating data was collected,
de-risking the atmospheric leach circuit, GMEL added. The
company said that the work confirms the non-refractory minerals
content of Kvanefjeld.
A total of around 25kg mixed rare earths
carbonate was manufactured during the piloting.
Vancouver, Canada-based Medallion
Resources Ltd has started providing
product specification sheets and samples of its planned rare
"Most people are aware that
we’re currently in a depressed market for rare
earths. However, our model of using monazite sand, a by-product
mineral feed that provides for low cost near term production,
is attracting industry attention," Don Lay,
Medallion’s CEO, said.
Medallion said that the monazite sand used
during recent bench-scale metallurgical tests was purchased
from a major heavy mineral sands (HMS) producer, though it did
not specify the company.
"We aim to deliver quality rare earth
concentrates to solvent extraction-based refineries.
We’re also speaking to groups with alternative
approaches that look to drive down rare earth separation costs
versus Chinese producers," Lay added.
In Calgary, Alberta, Mkango
Resources Ltd has been granted a renewal of two years
on its exploration licence for the Thambani uranium anomalies
in southwest Malawi.
Mkango said its planned dual listing on
the Alternative Investment Market (AIM) stock exchange in
London is well advanced, with SP Angel appointed as
nominated advisor and broker. SP Angel also recently went on a
site visit to Mkango’s Songwe Hill rare earths
"Mkango believes that the dual listing
will enable a broader access to capital and provide a stronger
platform for development as the Songwe Hill rare earths project
advances through the feasibility stage," Mkango said. The
company continues to work on flowsheet optimisation.