Herman Lagendijk

Head: Process Demonstration, Pyrometallurgy Division, Mintek

Herman Lagendijk (57) has a BEng degree in chemical engineering from the University of Pretoria. He has been employed at Mintek for over 30 years in the pyrometallurgical discipline. As Head: Process Demonstration, he manages a small group of engineers and technicians who take on projects from laboratory to pilot-plant scale. A recent project saw the group coordinating a toll-smelting campaign with the secondment of ~50 personnel to a project involving the processing of PGM-containing tailings, and producing an atomized metal powder product. Herman's expertise lies in the following areas:

Smelting of ferronickel using DC arc furnace technology
Production of manganese ferro-alloys in submerged-arc furnaces
Aluminothermic reduction of concentrates of reactive metals including zirconium, titanium, and niobium
Smelting, condensation, and distillation of zinc from various types of wastes
Comparative testing of various refractory types in a range of process applications

List of publications

2017: Laboratory-scale sulphation roasting testwork for copper and cobalt production

P Sithole, XC Goso, and H Lagendijk
2017: Recovery of vanadium from discard titaniferous magnetite slag using the soda ash roast-leach process

M Lekobotja, M Mojapelo, XC Goso, and H Lagendijk
2017: Metallothermic production of cement extender from manganese waste slags (Slag Valorisation)
2017: Metallothermic production of cement extender from manganese waste slags (Young Professionals)

W Banda and H Lagendijk
2016: Indicative vanadium deportment in the processing of titaniferous magnetite by the Roast-Leach and Electric Furnace Smelting processes

XC Goso, H Lagendijk, MW Erwee, and G Khosa
2010: Comparing manganese ferroalloy smelting in pilot-scale AC and DC submerged-arc furnaces
H Lagendijk, BS Xakalashe, T Ligege, P Ntikang, and K Bisaka
2007: A twin-cathode DC arc smelting test at Mintek to demonstrate the feasibility of smelting FeNi from calcine prepared from siliceous laterite ores from Kazakhstan for Oriel Resources plc
IJ Reinecke and H Lagendijk
1997: Production of ferronickel from nickel laterites in a DC arc furnace
H Lagendijk and RT Jones
1990: Compositional requirements for refractory materials in furnaces used for the manufacture of carbon disulphide
H Lagendijk
1986: The production of ferrotitanium in a d.c. transferred-arc plasma furnace
AD Brent, LB McRae, and H Lagendijk
Patent 2004: Method of and apparatus for refining zinc (2004/1249)
AD McKenzie, GM Denton, H Lagendijk, MD Shapiro, DP Mitchell
Patent 2002: Iron-nickel alloy production (2002/5502)
TR Curr, NA Barcza, H Lagendijk
Patent 1994: The production of ferronickel from nickel containing laterite (94/6071)
H Lagendijk, AFS Schoukens, P Smith, and PWE Blom

Pyrometallurgy Division, Mintek, 200 Malibongwe Drive, Private Bag X3015, Randburg, 2125, South Africa
Phone: +27 (11) 709-4606 Fax: +27 (11) 793-6241