ABA Structures, in collaboration with BRE Engineering, has successfully engineered a 563 cubic meters thickener for the Bald Hill Lithium project in Western Australia. The accompanying photo showcases the installation of the modules at the project site. This robust thickener, with a diameter of 16m and a maximum height of 6.5m above ground level, is supported by 20 steel columns and a central post, effectively transferring its weight and the weight of its contents to the foundation.
Equipped with a scraper system, the thickener operates with the assistance of an electric motor. This motor is mounted on a bridge positioned atop the thickener, applying a maximum torque of 150,000 Nm on a drive shaft to move the rake arms efficiently.
To ensure structural integrity and optimal performance, the system is meticulously designed to handle the full capacity of the minerals being processed, in addition to the application of ultimate limit state wind and earthquake loads. Wind forces are calculated in accordance with the Australian standard AS1170.2, while earthquake effects are evaluated according to AS 1170.4. Furthermore, a comprehensive assessment of the thickener’s response to earthquakes, accounting for sloshing forces and dynamic hoop stresses, is conducted in accordance with API 650 guidelines.
ABA Structures takes pride in thoroughly analyzing and assessing all structural components of the thickener. This includes the shell, base, radial beams, columns, bridge, and scraper. The calculations, analyses, and assessment results are meticulously documented in a comprehensive calculation report, which is then submitted to the client, ensuring transparency and providing a detailed record of the design process.
The collaboration between ABA Structures and BRE Engineering has resulted in a robust and reliable thickener design for the Bald Hill Lithium project. This achievement demonstrates the expertise and commitment of both companies in delivering high-quality engineering solutions in the mining industry.