MechChem Africa June 2018

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Pump systems, pipes, valves and seals 8 Warman pumps: 80-years of continuous development

P U B L I C A T I O N S CR O WN

In celebration of the 80 th anniversary of Charles HaroldWarman’s first Warman ® Pump, Pieter Jordaan,Weir Minerals Africa Sales Director for Africa and the Middle East, talks about the history and evolution of the Warman slurry pump.

10 Slurry pumps for University of Pretoria laboratory 12 Pumps systems 101: Landlords and pumping systems 14 The liquid ring vacuum pump 15 Stainless steel submersible pumps added to rental fleet Localisation, manufacturing, production and food processing 16 Turbo machines and reverse engineering

Published monthly by Crown Publications cc 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 Editors: Peter Middleton e-mail: peterm@crown.co.za Glynnis Koch e-mail: glynnisk@crown.co.za Advertising: Brenda Karathanasis e-mail: brendak@crown.co.za Design: Darryl James 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. P U B L I C A T I O N S CR O WN P U B L I C A T I O N S CR O WN 2015/02/10 01:17:09PM

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MechChemAfrica visitsACTOMTurbo Machines in Sasolburg,a division ofACTOM (Pty) Ltd and talks to Mark Gulbis,project engineer, about his division’s expertise in the maintenance repair and reverse engineering of high-speed rotating machines. 19 SA-manufactured mine winder for Canada 20 Food safety: Winning consumer confidence Power generation, sustainable energy and energy management 22 Electrical heat tracing for energy conservation Dirk Venter from eltherm South Africa, a heat-tracing specialist, highlights the energy savings and reliability advantages of using electrical heat tracing (EHT) solutions to maintain fluids at an optimum viscosity. 24 Towards a sustainable energy mix for Africa Petrochemical, oil and gas 26 Biorefinery facility to address waste challenges The South African government, through the CSIR has launched a R37.5-million biorefinery facility in Durban to enable extraction of maximum value from biomass resources. MechChemAfrica talks to the CSIR’s Bruce Sithole, the chief scientist and manager of the facility. 28 Oil & gas industry poised for revenue growth 29 On-site oil treatment saves transformers Environmental, waste management and cleaning technologies 30 The evolution of recycling processing equipment A new range of small, mobile crushers and screens from EvoQuip, distributed in South Africa through ELB Equipment, is about to represent a big opportunity for businesses to explore new opportunities in processing, especially in the areas of recycling and waste management. 31 ROSE Foundation – protecting our dwindling water resources Innovative engineering 38 Are hydrogen-powered trains the future of rail? A hydrogen-powered train that uses off-gas from industrial processes could hold the key for sustainable transport of the future: writes Robin Whitlock for World Steel. REGULARS 2 Comment: Raising food-processing standards 4 On the cover: Best practice waste management for environmental peace of mind MechChem Africa talks to EnviroServ CEO, Dean Thompson, about responsible waste management, the company history and some successes. 6 SAIChE IChemE News: Biomimicry: learning from evolution in nature 32 Product and industry news: Nadjar expands beyond grinding 40 Back page: Robot car leaps towards automatic driving

Transparency You Can See Average circulation January-March 2018: 4 815

Printed by: Tandym Print, Cape Town

Front cover: EnviroServ +27 800 192 783 annemaried@enviroserv.co.za www.enviroserv.co.za

June 2018 • MechChem Africa ¦ 1