AMMG Updates Process Design for HPA Chemical Project

Highlights
• AMMG’s process uses well-established hydrochloric acid leach (HCL) method
• Main advantage is the simple recovery of acid, reducing operating costs
• HCL process ideal for Meckering aluminous clay deposit
• Process utilises conventional, off-the-shelf plant and equipment
• Process covered by AMMG’s patent application

Australia Minerals and Mining Group Limited (ASX: AKA) (AMMG/the Company) is pleased to provide further detail of its proposed process plant design targeting 3,000 tonnes per annum (tpa) high purity alumina (HPA) operation. The Company has previously reported that laboratory test work afforded the successful production of HPA at 4N (99.99%) quality. The Company recently announced the commencement of a Bankable Feasibility Study (BFS) with a target production capacity that would position the Company as one of the top three HPA producers in the world.

Managing director, Iggy Tan said that the Company’s chief design philosophy is to minimise the technology risk by utilising proven “off-the-shelf” plant and equipment. For example, the leaching technology is conventional, the kilns are standard rotary kilns; and the evaporative crystallisers are “off-the-shelf” units commonly used in the chemical industry. “The plant has been designed with operability in mind but with the ultimate focus on achieving quality product at 99.99% (4N) HPA.

The Company has patent applications for the process we have developed. The unique part of the patent application is the process design coupled with the processing plant we have developed to produce 4N HPA product based on our low-impurity aluminous clay deposit”, Mr Tan said.