Siggi Leigraf
Siegfried Leigraf
You need a competent partner ?
Siggi Leigraf has worked almost his entire life in the field of Submerged Arc Furnaces (SAF)
Job Experience:
> 45 Years of Submerged Arc Furnaces (SAF)
- Design of electrical systems
o High voltage systems
o Power distribution
o Control systems
o Instrumentation
o HMI systems
- Design of mechanic and hydraulic systems
- Design of plant ancillary facilities
- Commissioning of submerged arc furnaces
and ancillary facilities
Record of Service:
In the employ of Mannesmann Demag submerged arc furnace design department
from 1971 to 1976 and from 1979 to 1999 as design engineer and electrical project leader.
In the employ of American Demag Corp. New York 1977 - 1978
as electrical project leader.
In the employ of SMS Demag submerged arc furnace design department
from 2000 to 2006 as electrical project leader.
In the employ of Electric and Automation Systems Division of SMS Siemag
from 2007 to 2014 as project manager.
During this time over 30 jobs for different products in many countries completed.
In 2014 the contract with SMS Siemag ended.
Actual Status:
Independent SAF advisor since.2014
2014 Guodian China CaC2 Furnaces Erection supervision and commissioning
2015 Antam Indonesia FeNi Furnace Erection supervision and commissioning
2015 Mississippi Silicon USA Si Metal Plant Commissioning
2015 Codelco / Ventanas Chile Cu. Slag Furnace New Commissioning
2016 Kazzinc Kazakhstan Cu. Slag Furnace Fact finding and reporting
2017 Steelmin Ltd. Bosnia FeSi Plant Consultant
2018 Rockwool Denmark Rock melting Consultant
2019 Kuwait Ferro Alloys Kuwait FeSi Plant Fact finding
and reporting
2019 Rockwool Norway Rock melting Design consultant
2019 Mopani / Mufuliera Zambia Cu Slag Furnace Fact finding
and consulting
2020 Rockwool Norway Rock melting Erection supervision
and commissioning
2021 PCC Iceland Si Metal Plant Consultant
2021 div. SAF Projects Consultant
2022 Rockwool Switzerland Rock melting Design consultant
2023 Rockwool Switzerland Rock melting Erection supervision
2024 and commissioning
2024 div. SAF Projects Consultant