Modern Quarrying Q4 2018

Linatex slurry hoses and sheet lining are custom made to each wash plant that is manufactured.

Haver & Boecker’s Hydro-Clean Washing System with 2 000-psi high-pressure water jets effectively removes dirt and clay from aggregates and run-of-mine material, while minimising water and energy consumption.

KEY TAKEAWAYS

There has been a marked increase in enquiries regarding wet washing of the minus 6,3 mm manufactured sand

The quality of deposits is decreasing and therefore a major effort in processing particularly, is necessary

consensus that wet processing is a big growth area globally, especially in the quarrying space. But, how is the uptake of washing equipment in the African operating environment? According to JD Singleton, Process Director – Weir Minerals Africa, there has been a marked increase in enquiries regarding wet washing of the minus 6,3 mmmanufactured sand. “We attribute this to the fact that customers are conscious that producing higher quality wash sand will enable them to obtain a premium in the market, while simultaneously addressing the environ- mental concerns. Africa is following the global trend of wet washing of the minus 6,3 mm sand fraction,” says Singleton. Dr. Metodi Zlatev, head of Sales and Projects at Haver & Boecker, says the OEM has seen growing demand for washing equipment over the past few years, particularly in diamond mining. “Haver & Boecker has delivered several Hydro-Clean plants in Africa for a vari- ety of applications, including offshore

Recycling demolition waste is also becoming a major issue in some countries, especially in large urban areas where, because of distance, it’s costly to transport material to natural aggregates landfills

The African washing market will continue to increase as the need for high quality building sand increases with the increase in Africa’s population

mining, stationary processing and for exploration purposes,” says Zlatev. According to Singleton, one of the major drivers behind the trend towards wet processing in quarrying is that the construction industry requires high quality building sand, and that can only be produced by high efficiency wet sand wash systems. “High quality sand results in superior roads and build- ings,” he says. Zlatev is of the view that the quality of deposits is decreasing and therefore a major effort in processing is particularly necessary. He reasons that, in turn,

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QUARTER 4 - 2018 MODERN QUARRYING