18 – 19 September 2017
Kuala Lumpur


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Since the earliest known production of cast lead beads, which were found in the Çatal Höyük site in Anatolia (Turkey), and dated from about 6500 BC, the lead smelting industry has been creating the by-product of slag. Effectively with no value; it has generally been disposed of in ‘land fill’ sites and other waste ‘dumps’ across the world; or, in some instances just leaving it to be washed away by the rain..!

What is ‘slag’, how is it created, and more importantly, what can we do about ‘solving’ the challenging issues created by this ‘waste’ product …?

Every smelter faces this challenge at some point of its operation and often for many the cost (both financial and environmental) of slag disposal is one of the three major concerns in operating their facility.

This session is intended to stimulate a debate within our industry, by utilising the combined knowledge of specialists; to better understand the characteristics and chemistry of slag, in order to hopefully develop a path forward the industry in unison will follow to solve our problem. It may be a new process technology that will eradicate the production of this unwanted material, or a new product or use; but we must ensure an environmentally sound management of our future lead smelting processes.

We would also like to also focus on ‘improved stewardship’ of slag from current smelting processes and the remedial treatment and recovery of lead from existing ‘slag dumps’; but importantly, the subject is open to the floor to debate, drive and own.


Douglas Lambert
WIRTZ Manufacturing Company Inc.
Vice President – Battery Technology

Douglas (‘Doug’) Lambert holds a BSc (Hons) degree from the University of Portsmouth. He joined Oldham Batteries in February 1977 and now with over 40 years of experience in the lead–acid battery industry, which included 12 years as a specialist lead-acid product and process consultant, he is currently Vice President – Battery Technology for the WIRTZ Manufacturing Company Inc.

Mark Stevenson
Global Lead Technologies
Technical Director

Mark Stevenson has been involved in the lead smelting and battery industry for the past 38 years. His career has covered all facets of primary and secondary lead research and production and battery development working in numerous roles over these years. He is currently the Technical Director for Global Lead Technologies and holds numerous positions throughout the world including Chairman of the Asian Battery and Secondary Lead conferences.

Beginning his career as a metallurgist with Simsmetal, Mark has provided technical support, market development, project implementation and developed product strategies throughout Australia, Europe and Asia through companies including Ecobat Technologies, Nyrstar, Zinifex and Pasminco.

Mark has also been a Director of Smart Storage (Ecoult), responsible for the development and commercialisation of the UltraBattery, a CSIRO developed lead-acid battery/supercapacitor hybrid, and PAM Chairman of the Advanced Lead Acid Battery Consortium, an international R&D consortium dedicated to enhancing the capabilities of the lead-acid battery. He currently holds the position of Chairman and Organiser of the Asian Battery and International Secondary Lead Conferences.