MRG Metals Ltds (ASX:MRQ) metallurgical test-work on a 100-kilogram bulk sample from the Koko Massava total heavy minerals (THM) resource in Mozambique has delivered a sizeable upgrade in ilmenite product.
Ultra Low Temperature Roasting (ULTR) under reduced conditions produced a quality upgraded
ilmenite product with 47.1% titanium dioxide (TiO2) concentration.
There is a potential to further upgrade the product to near 50% TiO2 concentration with next step optimisation.
These test results support the maiden mineral resource estimate of 1.423 billion tonnes at 5.2% total THM and establish Koko Massava as a globally significant heavy mineral sand (HMS) asset.
MRG Minerals chairman Andrew Van Der Zwan said: “We have been successful in producing a 47.1% TiO2 concentrate product from a small, initial 100-kilogram sample and we are confident that further optimisation will deliver near 50% from Koko Massava material.
“We have demonstrated commercial potential for this Ilmenite product, which can be used as a direct feedstock for sulphate pigment manufacture or as a feedstock for titanium slag manufacture.”
A bulk sample of 100 kilograms representing the high-grade mineralised zones of valuable heavy mineral (VHM) from within the Koko Massava resource was sent to IHC Robbins in Brisbane for metallurgical testing.
Preliminary test-work demonstrated that multiple products can be produced from Koko Massava material.
The sample was roasted at ultra-low temperature under reduced conditions and then processed through a series of magnetic separators to produce an upgraded ilmenite product with 47.1% TiO2 concentration.
Ilmenite structure didnt change under the low-temperature conditions and remains soluble with sulphuric acid.
It can thereby be used as a direct feedstock for sulphate pigment manufacture or as a feedstock for titanium slag manufacture.
“Addressing ilmenite shortage”
Van Der Zwan said:Read More – Source