Nickel recovery processes

UrbanNickel – Recovery and recycling of nickel from deposited neutralization sludge of the stainless steel industry

Situation:

When pickling stainless steel large amounts of nickel-containing neutralization sludge are produced. Since 1970, approximately 1.2 million tons of neutralization sludge with approximately 12,000 tons of nickel has been deposited on the German landfill sites. The recovery of nickel from deposited neutralization sludge could therefore contribute to raw materials security in Germany.

Solution:

The objective of the research project was to investigate the possibilities of nickel recovery from deposited neutralization sludge and to provide procedures for the economic recovery of nickel.

Operational benefit:

  • Evaluation of the recoverability of the deposited neutralization sludge
  • Return of the deposited nickel into the cycle of material
  • Improvement of the nickel supply situation for German companies

Recommendation

PSP-BOF – Removal of Phosphorus from BOF-slag

Initial situation Increased cost for raw materials and for landfilling have forced European steelmakers to look for new ways to […]

TriboCoat – Optimization of highly stressed sliding contacts by the use of innovative coating and surface concepts

Situation: Frequent malfunction in the case of sliding contacts in the boundary friction regime for discontinuous movements and high loads. […]

BOFdePhos – Control of Dephosphorisation in BOF process

Initial situation: End-point control of the Oxygen Steelmaking Converter (BOF) process is mainly based on results of a static charge […]

AeroRef – Reduction of energy demand in heating furnaces by new combination of aerogel and refractory

Initial situation Despite continuous improvements in thermal insulation in industrial furnaces, heat losses through the furnace walls are unavoidable Reduction […]