Corrosion-protection at Exxaro’s Arnot Mine

BKV Holdings was contracted directly by Exxaro, South Africa’s leading coal miner, to undertake corrosion protection over a vast area of more than 24000m² at Arnot Mine in the Mpumalanga coal fields.

This three year contract entailed replacing aged and damaged roof sheeting and protecting the new material from corrosion at various overland conveyors and beneficiation buildings.

Impressively, all activities and variation orders were completed three months ahead of the deadline.

Moreover, our ingenuity and ability to innovate provided the client with cost-savings and the project was also completed well within the new budgeted price.

One of the challenges was the height of some of the overland conveyors where Kwikstage scaffolding had to be installed to replace the sheeting material and to apply our corrosion-protection solution.

Moreover, the BKV Holdings’ team had to carefully coordinate its work around the day-to-day operations at the mine, while also working in an environment where there are spillages and coal dust.

BKV Holdings has always prided itself in its unwavering commitment to health and safety, and this was again evident on this project where we did not experience a single incident throughout the entire duration of the contract.

All of our work was successfully signed off by the client’s own engineers and quality inspectors.

Our state-of-the-art solution entailed:

  • Abrasive blasting to SA2.5 for surface preparation;
  • Undertaking a Holdtite wash for neutralisation;
  • Using Stoncor ProStruct 617NS for void filling; and
  • Deploying Stoncor Polyclad 777 @1500µ for lining.

The following equipment was used on this project:

  • Three 400CFM compressors;
  • Four 200l blasting pots;
  • A water bowser;
  • 50 tonnes of Kwikstage scaffolding;
  • A plural component-lining machine;
  • Three airless pumps; and
  • Two 14m 4×4 cherry pickers.