Using cold-pressing technique to recycle nonmagnetic material from de-sulferization slag as coarse aggregate

C. T. Tsai, J. E. Chang, C. C. Wu, T. K. Hsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In Taiwan a de-sulferization slag of about 500,000 ton is generated every year, but the recycling amount is very slight. A new approach, the cold-pressing technique incorporating the principles of the cement chemistry and composite material, was not only able to recycle innocuous construction residual soil, sludge, and sediment, but also stainless steel reductive slag with poor volume stability as recycling coarse aggregate. And the main difference between the cold-pressing and sintering technique is the reduction of energy consumption and CO2 emission. Consequently, this study mainly looks forward to recycling nonmagnetic material from de-sulferization slag as coarse aggregate through the cold-pressing technique. Herein the mixture proportions with w/cm = 0.20, a cement amount of 100 kg/m3, and more than 70% (by weight) of nonmagnetic material from de-sulferization. The test results show that the basic properties of recycling coarse aggregate conform to ASTM C33. Therefore the cold-pressing technique is a new and practicable approach to recycle nonmagnetic material from de-sulferization slag in the future.

Original languageEnglish
Title of host publicationAdvances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015
EditorsShiquan Zhou, Aragona Patty, Shiming Chen
PublisherCRC Press/Balkema
Pages2765-2769
Number of pages5
ISBN (Print)9781138029330
DOIs
Publication statusPublished - 2015
EventInternational Conference on Energy Equipment Science and Engineering, ICEESE 2015 - Guangzhou, China
Duration: 2015 May 302015 May 31

Publication series

NameAdvances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015
Volume3

Other

OtherInternational Conference on Energy Equipment Science and Engineering, ICEESE 2015
CountryChina
CityGuangzhou
Period15-05-3015-05-31

All Science Journal Classification (ASJC) codes

  • Energy (miscellaneous)
  • Engineering(all)

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