MechChem Africa February 2019

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Asset, maintenance and risk management 8 Classic wear failures revisited Johannesburg based consulting engineer, Tim J Carter, talks about wear failures and the importance of using the best possible lubricants and lubrication strategies.

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10 Local engine remanufacture saves time and money 10 Second extra heavy duty CNC for Metric Automotive 12 Risk management for industrial safety Materials handling 14 Hydroclone shines in diamond processing

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 Editor: Peter Middleton e-mail: peterm@crown.co.za Assistant editor: Phila Mzamo e-mail: philam@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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The successful performance of Weir Minerals’ Cavex hydrocyclones at a diamond mine in South Africa’s Northern Cape Province has proved the technology’s applicability in dense medium separation (DMS) plants that treat diamondiferous material.

15 World-class supply for African customers 16 Recent orders put Kwatani above the rest

17 Chute system reduces risk of dust contamination 18 Adapted excavators improve port operations 19 Spiral technology brings value to minerals Heating, cooling, ventilation and air conditioning 20 Responsible management of refrigerant gases MechChem Africa talks to A-Gas sales manager, Mike Labacher, about current trends with respect to refrigerants and the need for more responsible lifecycle management of these gases. Water and wastewater processing 22 Enhanced production for ion exchange resins LANXESS, is investing in its ion exchange resin production facility at its Leverkusen site in Germany. Rainier van Roessel of LANXESS AG explains. 22 New Lewabrane HP reverse osmosis series 25 Cast resin transformers for Zuikerbosch WWTW 26 SA’s woven geotextile dewatering solution Innovative engineering 30 Coal Ash: Tapping into resource potential According to Mark Hunter, general manager of the South African Coal Ash Association (SACAA), South Africans stand to make a fortune out of the tons of ash produced by generators annually. REGULARS 2 Comment: The state of the nation? 4 On the cover: Endress+Hauser’s SANAS accredited laboratory Preston Reddy talks about verification and calibration and the advantages of using the company’s local SANAS-accredited Flow Calibration Centre. 6 SAIChE News: Innovation award for Sasol R&T team 28 Product and industry news 32 Back page: REFLUX Classifier increases mining productivity

Transparency You Can See Average circulation July-September 2018: 5 027 Printed by: Tandym Print, Cape Town

Publisher of the Year 2018 (Trade Publications)

Front cover: Endress+Hauser Contact: Kgomotso Makhobela +27 11 262 8004 kgomotso.makhobela@endress.com www.za.endress.com

February 2019 • MechChem Africa ¦ 1