Blackstone Minerals

Blackstone’s Piloting Success

Blackstone Minerals Limited (“Blackstone” or the “Company”) is pleased to provide an update on its metallurgical test work programme that has validated the process for the Ta Khoa Refinery Project (“TKR”) through production of battery grade nickel and cobalt sulphates, and successful processing of third-party cobalt supply.


Ta Khoa Refinery Project

In August 2022, Blackstone announced the completion of batch test work and commissioning of piloting equipment as part of the Definitive Feasibility Study (“DFS”) test work program being conducted by ALS metallurgical laboratories (“ALS”) (refer ASX announcement 24 August 2022). Since this announcement, Blackstone is pleased to share the following update:

  • Validation of TKR process: Continuous operation of the pressure oxidation (“POX”) process consisting of Ban Phuc Nickel Mine (“BPNM”) and third-party concentrate (known as “TKR feed blend”). Over 7,200 kg of feed has been processed over a piloting run time of 730 hours during the campaign.
    In addition, the mixed hydroxide precipitate (“MHP”) re-leach process has been piloted with third-party MHP (with a piloting run time of 635 hours) to produce battery grade nickel and cobalt sulphates suitable for battery precursor cathode active material (“pCAM”) as verified by ALS.
  • Production of MHP: Production of MHP has been completed using the TKR feed blend with over 2,200 kg produced. Production has met specifications required to achieve battery grade nickel and cobalt sulphates. In the coming month, the MHP produced from the TKR feed blend will be processed to complete the pilot campaign.
  • Distribution of battery grade sulphates: Battery grade nickel and cobalt sulphates have been committed to potential partners for pCAM processing and performance testing. This marks an important partnership development milestone.
  • Third party cobalt supply processed: Successfully processed over 70kg of third- party hydroxides within feed blend demonstrating suitability of low emission and low-cost cobalt sources to the TKR process.

The TKR pilot program, inclusive of process variability test work, is due to be completed by the end of 2022.

Scott Williamson, Blackstone’s Managing Director, said:

“Thelatestachievementswith the pilot program validate the Ta Khoa Refinery Project process for production of battery precursor material. Blackstone Minerals is excited to be sharing samples with our technology and strategic partners. The completion of the piloting program by end of 2022 is an important milestone as we strive to be a world leader in Green Nickel™ production.”


Click here for the full ASX Release

This article includes content from Blackstone Minerals Limited , licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.

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