MechChem Africa September-October 2021

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CONTENTS Maintenance solutions and asset management 6 Correct lubrication for enhanced bearing performance Wayne Holton, BMG’s business unit manager for the Bearings, Seals and Gaskets division, looks at how friction, wear and lubrication affect bearing performance. 8 Full-service capability vital for reliable pump supply 9 Real-time monitoring reduces impact of COVID-19 Water and wastewater solutions 10 Lime slaker plant cuts water treatment costs A new lime-slaking facility, which will help a mine water treatment plant achieve significant cost savings, has been equipped with a stainless steel Grundfos booster pump to reliably handle the corrosive permeate. 13 EWSETA capacitating entrepreneurs via 4IR solutions 14 Water stewardship gives mines the broader view 16 Is SA doing enough to avert a water crisis? Minerals processing and materials handling 18 Digital platforms, collaboration and the journey towards autonomously run plant MechChem Africa talks to Multotec’s Thomas Holtz about digital platforms for minerals processing plants and the need for closer collaboration if we are to realise the true value of autonomous processing. 21 Innovating cooperatives to create more jobs 22 Conveyor innovation for platinum processing plant 24 Container and component handling for automotive assembly 25 Instrotech’s tried and tested bulk weighing technology Heating ventilation and air conditioning 26 Cabin cooling for SA’s mining vehicles MechChem Africa talks to Booyco Engineering’s Brenton Spies and Grant Miller about HVAC systems for special vehicles operating under extreme conditions. MechChemAfrica talks to Saien Rugdeo of SKF about specialty solutions and services developed for wind turbines and renewable energy generators. 30 Embedded Generation: opportunities from the 100 MW threshold increase 32 Project nautilUS extension announced 33 Realising energy efficiency in a time of escalating costs Corrosion control and coatings 34 A corrosion investigation for a biokinetics pool Sassda’s Michel Basson reports on case study involving pitting corrosion of a stainless steel support railing system following an upgrade to a biokinetics treatment pool. Local manufacturing and food processing 36 Bosch Holdings celebrates 60 years of innovation in engineering Founded in 1961 in Durban, SouthAfrica, Bosch Holdings has since executed projects in over 120 countries around the world. Mike Gibbon, the company’s current CEO, summarises some of this success. Innovative engineering 40 Diesel engines: the road to zero harmful emissions WearCheck technical manager, Steven Lara-Lee Lumley, unpacks diesel engine emissions and outlines the legislation and technologies being put in place to mitigate against harm. Regulars 2 Peter’s comment: Collaboration, 4IR and lessons from COVID-19 4 On the cover: Modular plant, green hydrogen and the future focus of tk-Uhde SA: MechChemAfrica talks to tk-Uhde’s team about the modularisation of chemical process plant. 38 Products and industry news 44 Back page: TUKS students race robots PowerGen, PetroChem and sustainable energy management 28 Specialty rotating shaft solutions for the renewable energy sector

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. Transparency You Can See Average circulation Jan to Jun 2021: 7 196 Printed by: Tandym Print, Cape Town Front cover : thyssenkrupp-Uhde South Africa Contact: Rajend Govender, CEO Tel: +27 (0) 11 236 1000 info.tkissa@thyssenkrupp.com www.thyssenkrupp-industrial-solu- tions.co.za e-mail: peterm@crown.co.za Advertising: Elmarie Stonell e-mail: elmaries@crown.co.za

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September-October 2021 • MechChem Africa ¦ 1