MechChem Africa July-August 2023

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CONTENTS 30 Water, wastewater and pumping solutions 6 Five tips for choosing dewatering pumps Pumps expert Steve du Toit of IPR provides five key insights that will help in understanding the respective benefits of diesel and electric dewatering pumps. 7 Atlas Copco hinged door concept praised 9 New water policy calls for all hands on deck 10 Grindex Mega for heavy duty dewatering 11 Verderair HC-PURE: the hygienic double diaphragm pump 13 Tips for stockpiling water Power transmission, bearings, bushes and seals 14 Bonfiglioli recycling solutions: working towards a sustainable economy Tony dos Santos of Bonfiglioli South Africa outlines the company’s global capability in waste recycling, an increasingly crucial sector for the modern circular economy. 16 SKF SA delivers turnkey local bearing and housing solution 17 PowerTwist Link belting with wedge profiles 18 Further investment from SEW-EURODRIVE Minerals processing and materials handling 20 SmartCyclone™ innovations optimise separation efficiency MechChem Africa talks to cyclone specialist, Abrie Schutte of FLSmidth, about the significant advantages that innovations such as SmartCyclone TM bring to mill circuit operations. 22 Dimple Tube technology enhances sugar productivity 23 AdWinMethanol ® technology: for large quantities of green methanol 25 Multotec’s 12-turn spiral for increased recoveries Hydraulic, pneumatic and automation solutions 26 Give your vacuum handling system a lift Irina Hermann, Product Manager, SMC Germany, talks about smart vacuum solutions and the often-overlooked components that can cause a system to underperform or fail. 28 SmartLink 2.0 takes the guess work out of compressed air performance 29 Smart Mine GM to lead digital transformation PowerGen, PetroChem and sustainable energy management 30 Zest WEG Mobile substations: key design principles Sollie Herbst, senior manager for Energy Systems at Zest WEG, presents an overview of the company’s mobile substation offering. 32 Steam boilers added to Rand Air’s rental fleet 34 Optimising energy usage while also going ‘greener’ Environmental management, waste and cleaning technologies 36 Dealing with disposal of expired chemicals and pesticides Mahmood Patel, EnviroServ’s National Laboratory Manager, talks about the management of pesticide waste and the safe and legal disposal of substances used to kill, repel or control forms of plant or animal life considered to be pests. Innovative engineering 42 Artificial intelligence: Don’t call me stupid! Tim Foreman of OMRON in Johannesburg, talks about harnessing AI to make machines smarter so they can figure out for themselves why they have stopped or why there is a problem. Regulars 2 Peter’s comment: Record temperatures and solutions to the freshwater crisis. 4 On the cover: Weir Minerals invests for a sustainable Africa. 38 Products and industry news. 44 Back page: SMART AI innovations boost SA’s healthcare system. 44

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: peterm@crown.co.za www.mechchemafricamagazine.co.za Editor: Peter Middleton e-mail: peterm@crown.co.za Advertising: Elmarie Stonell e-mail: mechchemafrica@crown.co.za 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.

Transparency You Can See Average circulation Jan to Mar 2023: 10 217 Printed by: Tandym Print, Cape Town

Front cover: Weir Minerals Africa www.global.weir

July-August 2023 • MechChem Africa ¦ 1