The project involved the supply of a Ø26 x 28ft, 9MW SAG mill—a key piece of equipment for the client’s ongoing growth.

All components of the SAG mill were delivered to the highest standards of quality. Whether refurbished or newly manufactured, every item was subjected to rigorous inspection and backed by OEM-level assurance, ensuring that every part met our strict technical and performance benchmarks, contributing to a robust and efficient final product.

NCPI coordinated the global sourcing, engineering, and shipment of over 1,250 tons of equipment to site. Thanks to detailed planning and execution, all critical components were delivered within 25 weeks—a result made possible by NCPI’s experienced team and streamlined project management approach.

A Trusted Supplier in Global Mining
This successful delivery reflects NCPI’s unwavering focus on quality workmanship, timely execution, and customer satisfaction. We remain committed to supporting our clients with dependable solutions that meet the demands of modern mining operations.

The contract included for the supply of a new 36’Ø x 19.5′, 13.5 MW Primary SAG Mill and a new 22’Ø x 34′, 8.5 MW Ball Mill..

The Ball mill operated in closed circuit with several vibrating screens, with the circuit designed to treat 1875tph of Uranium ore delivering a product of P80-350um.

The site conditions defined the maximum site temperature more than 40deg C, which required the mill motors and Variable Speed Drives to be water cooled. NCPI’s contract included for the design, supply and installation of a complete water chilling and distribution circuit.

The mills were successfully commissioned in 2016, completing the entire design, manufacture, delivery to site on time within 50 weeks. The mills have been successfully running since 2016, with full after sales and technical support offered by NCPI.

“This was a landmark project and is believed to be amongst the largest gear driven mills operating in Africa. Another successful project completed on time and on budget by NCPI.”

NCPI successfully completed the supply of one of the world’s largest gear driven mills ever manufactured for RED 5’s KING OF THE HILLS (KOTH) gold project in Australia.

The company supplied the KOTH project with a 36’Ø x 17,5′, 18 MW, Dual direct Drive Bi-directional Semi-autogenous (SAG) mill supported off multi-pad hydrostatic trunnion bearings.

The Mill start sequence via the ACS6000 Variable Speed Drive ensures a controlled Mill start with locked-charge protection, which protects the mill structural integrity at all times. The Mill Drive train is designed to allow Mill Inching for mill maintenance purposes and includes the advantage of automatic Mill positioning to optimize relining functions.

NCPI’s scope of work included the supply of the mill, delivered CIF to Freemantle port, Western Australia, and included installation supervision and commissioning assistance.

“The SAG Mill’s delivery time frame was critical for this project.”

The mill installation is 95% complete with commissioning planned to commence in March 2022. Installation has run to schedule with NCPI providing the onsite Mill Installation supervision services. NCPI will supply the client full aftermarket sales service, on-site service and technical support through our local partners.

“NCPI is pleased to have successfully completed this mill supply following two other successful mill installations into the Australian market.

NCPI’s scope of supply included the MV switchgear together with liquid resistance starters and mill main motors. Several upgrades were completed including:

• Changes to the ratio of the main reducers to increase the speed of the mill and allow increased power draw within the design limitations of the existing drive train.
• Manufacturing new discharge endplates for a heavier cantilevered load required for the new trommel screen.
• Changing the liner design from a grate discharge to an overflow discharge arrangement.

On completion of the mill refurbishment, NCPI transported the mill components from Johannesburg, South Africa to the mine in Northern Zimbabwe. NCPI’s installation team were on site to supervise and assist with the installation and upskill of the local labour, teaching them the necessary skills required for mill installation and maintenance.

The re-engineered and refurbished components completed under NCPI’s quality control allowed us to provide a warrantee equivalent to that of new equipment.

In 2021, NCPI was awarded the contract for the supply of a new 17’Ø x 25’, 3.2 MW Ball Mill which included the mill control panel and supply of the VVVF VSD for main drive motor.

NCPI fulfilled all our commitments made at sales stage, and completed the mill design, manufacture, and supply of selected critical spares.

For this project, lead time was significantly critical, and NCPI did achieve an amazing delivery time of 24 Weeks EXW for a new mill, living up to all our commitments made during the sales stage of the project.