Quest Rare Minerals (TSX:QRM) (Quest) is pleased to announce that it has obtained issuance of international patent (PCT/CA2016/051489) from the World Intellectual Property Organization, for the unique characteristics and capabilities of its eco-friendly “Selective Thermal Sulphation (STS) process.

The published patent titled “Rare Earth Ore Processing Methods by Acid Mixing, Sulphating and Decomposing”, comprises of Quest’s complete rare earth processing methods for its Strange Lake Complex Deposit – from preparing mineral concentrate using one or more beneficiation methods to reduce the amount of ore processed and economically maximize the recovery of rare earth elements to producing a leach solution containing the rare earth elements (REE), that is substantially free of gangue elements.

Dirk Naumann, Quest Rare Minerals President, said:

“It is of great value that Quest’s entire STS process is being granted protection by way of an international patent.
The Strange Lake Complex deposit is quite unique and we have achieved a very high level of customization to efficiently and cost effectively produce high purity mixed rare earth metal oxides in an environmentally friendly manner.”

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