MechChem Africa July-August 2022

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CONTENTS Water, wastewater and pumping solutions 6 Parallel pipes and the size of pizzas Pump expert Harry Rosen unravels the relationship between flow rate, pipe area and velocity, and the dramatic effect these values can have on friction losses. 9 Easy access to pump and hose flotation devices 10 Technology to remotely monitor and manage pumps 11 WearCheck acquires Set PointWater Laboratories 13 KSB calls for joint efforts to treat coastal waste Power transmission, bearings, bushes and seals 14 Electrification of the construction industry showcased in Sonderborg During the IEA’s2022conferenceonenergy efficiency, MechChemAfrica visits anall-electric construction siteand talks toEricAlströmof Danfoss. 17 Bonfiglioli engineers set new group standards 18 Steel and heat treatment raises performance in wind turbines 19 Modular drives for power generation Minerals processing and materials handling 20 Sandvik customers welcome new crushing solutions Quarry owners have given an enthusiastic reception to two new Sandvik static crushing solutions, the Reborn plant and the FastPlant TM . 22 Cameroon exploration progresses with Multotec pilot plant 23 Weir MineralsAfrica benefits as mining surges 24 Kwatani casts the spotlight on innovation and digitalisation Hydraulic, pneumatic and compressed air solutions 26 Locally engineered hydraulic, lubrication and pneumatic solutions BMG’s Regional Service Centres (RSC) throughout SouthAfrica play a critical role by providing engineered hydraulics and pneumatics services to optimise productivity for local industries. 28 Hydraulic design and simulation capabilities fromHYDAC 30 Hydraulic rock drill: efficient, fast, accurate, clean and safe 31 IntegratedAir Solutions partners with global piping and fittings specialist PowerGen, PetroChem and sustainable energy management 32 Extracting best possible value from steam turbines MechChem Africa talks to Rudolf van Pype of Zest WEG Steam Turbines about the maintenance of steam turbines and some key mistakes operators should avoid. 34 Overcoming boiler failures 35 Hybrid and flexible power plants essential for supply security Automation, process control and CAE 36 Sustainability and energy efficiency: key priorities for automation systems MechChemAfrica talks to Skye Prato of Festo about how to improve the energy efficiency of automation systems. 38 Fuel for the future: trends in fuel cell production Environmental management, waste and cleaning technologies 40 VSSA promotes healthy ecosystem and rich biodiversity Veolia Services SouthernAfrica presents its circular economy approach to environmental management. 41 Plastics recycling growth promising Innovative engineering 46 Energy Efficiency, Sonderborg and ProjectZero From the International Energy Agency’s 2022 Energy Efficiency conference in Sonderborg, Peter Middleton highlights some notable efficiency and decarbonisation successes. Regulars 2 Peter’s comment:MeetingAfrica’s energy-related goals. 4

Published bimonthly by Crown Publications (Pty) Ltd Cnr Theunis and Sovereign Streets Bedford Gardens 2007 PO Box 140, Bedfordview, 2008 Tel: +27 11 622 4770 e-mail: mechchemafrica@crown.co.za www.mechchemafricamagazine.co.za Editor: Peter Middleton Design: Katlego Montsho Publisher: Karen Grant Deputy publisher: Wilhelm du Plessis Circulation: Brenda Grossmann The views expressed in this journal are not necessarily those of the publisher or the editors. e-mail: peterm@crown.co.za Advertising: Elmarie Stonell e-mail: elmaries@crown.co.za

Transparency You Can See Average circulation Jan to Mar 2022: 8 881 Printed by: Tandym Print, Cape Town

Front cover: Weir Minerals’ Mudflo pump Contact: Marnus Koorts Tel: +27 11 929 2792 marnus.koorts@mail.weir www.minerals.weir

On the cover:Weir Minerals’ Mudflo pump shows value of ETO solution: Marnus Koorts talks aboutWeir Minerals’ growing range of engineered to order solutions. 42 Products and industry news 48 Back page: Red DotAward for SA-designed camper-trailer

July-August 2022 • MechChem Africa ¦ 1