
An advanced metallurgical programme conducted by Canyon Resources Limited on alumina samples from Minim Martap Bauxite Project in Cameroon shows consistent +90% available alumina.
The outcomes of the testing confirm the presence of very high grade bauxite in the project and high rates of conversion from total alumina to available alumina at low-temperature digestion conditions.
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Around 61 samples were analysed by micro digestion for Total Available Alumina (TAA) and Reactive Silica (RSi) at low temperature, while 22 samples were analysed at high temperature by SGS Laboratories in Perth.
Director of projects Dr James Durrant said: “The testing confirms that not only would an offtake company receive a very high alumina content in their bauxite, but that the extractable alumina portion is also very high, at over 90%.”
He added, “This is a double bonus to any offtaker and one they can improve upon even further by optimising the digestion conditions from the laboratory conditions we’ve used in these standardised tests.”
He also said, “Canyon’s laboratory partners for the metallurgical work, SGS Perth, are very pleased with the data correlation of the tests and the FTIR data-sets we’ve been building now give us a fast and effective test for metallurgical performance.”
“The FTIR test methodologies are aligned to how the major bauxite and alumina producers are operating, which will support us now, through the development phase, and as an operating miner,” said Dr Durrant.
Advanced metallurgical testing allows Canyon to provide potential offtake partners with more detailed data on the performance of the bauxite, particularly regarding the high alumina recoveries and the optimal refinery conditions for the refining of the Minim Martap bauxite.
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