Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Books and Book parts
  4. Producing precipitated calcium carbonate (PCC) from steelmaking slags using the slag2pcc concept
 
book part or chapter

Producing precipitated calcium carbonate (PCC) from steelmaking slags using the slag2pcc concept

Hannu-Petteri Mattila
•
Ron Zevenhoven
Ludwig, Christian  
•
Matasci, Cecilia  
Show more
October 16, 2015
Natural Resources - Sustainable Targets, Technologies, Lifestyles and Governance

Calcium-containing slag material is produced in iron- and steelmaking worldwide, including Finland. One process route utilizing this calcium, being developed towards large-scale application, is the so-called slag2pcc concept. Using ammonium salts, up to 50% of the calcium content is selectively extracted from steel converter (BOF) slags in a two-stage aqueous process operating at ambient temperatures and pressures. Precipitated calcium carbonate (PCC) is produced by reacting the dissolved calcium with CO2, thereby also regenerating the ammonium salt for recovery and re-use. Process optimisation involves the efficient production of PCC material with a certain quality, requiring effective separation of the solids from the solutions as well as maximal extraction of slag calcium against minimal solvent salt losses. In this paper the performance of the process, the possibility of continuous operation and the progress towards larger scale operation are reported. In addition, the consumption of process commodities such as energy and water is addressed by life-cycle assessment (LCA) approach, in comparison with traditional PCC production technologies. The slag2pcc concept combines the advantages of converting an industrial by-product into a valuable material, reducing use of natural material and streams to landfills while binding some of the CO2 produced by the process generating the slag.

  • Details
  • Metrics
Type
book part or chapter
Author(s)
Hannu-Petteri Mattila
•
Ron Zevenhoven
Editors
Ludwig, Christian  
•
Matasci, Cecilia  
•
Edelmann, Xaver
Date Issued

2015-10-16

Publisher

Villigen PSI, World Resources Forum, printed by Paul Scherrer Institute

Published in
Natural Resources - Sustainable Targets, Technologies, Lifestyles and Governance
ISBN of the book

978-3-9521409-6-3

Total of pages

130-136

Book part title

Technological Innovation, Business and Finance

Start page

356

Subjects

steelmaking slag

•

valorisation

•

precipitated calcium carbonate (PCC)

•

CO2 storage and utilization

URL
https://infoscience.epfl.ch/record/213010?ln=en
Written at

EPFL

RelationURL/DOI

IsPartOf

https://infoscience.epfl.ch/record/213010?ln=en
Available on Infoscience
March 10, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/205943
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés