Recycling nonmagnetic material from de-sulferization slag as coarse aggregate through cold-pressing technique

Juu En Chang, Chih Ta Tsai, Chia Cheng Wu, Teng Ker Hsu

研究成果: Conference contribution

摘要

Every year there was approximately 500,000 tons of de-sulferization slag generated in Taiwan, but the recycling amount was very slightly. A new approach, the cold-pressing technique that incorporates the principles of the cement chemistry and composite material was developed to recycle innocuous resources (e.g. construction residual soil, granite and lime sludge, and sediment, etc.) as recycling coarse aggregate. Even this technique also has successfully been applied to recycle stainless steel reductive slag with low volume stability. This paper aims to show that using cold-pressing technique can recycle nonmagnetic material from de-sulferization slag as coarse aggregate. Herein the cement-based composite is regarded as concrete. Particularly, the mixture prop ortions with a low cement amount of 100 kg/m3, more than 70 % (by weight) of nonmagnetic material from de-sulferization were designed. The test results show that the specific gravity of recycling coarse aggregate is about 1.67 in the OD state; the absorption capacity is 27.65 %; the dry loose density (i.e. unit weight) is about 1,106 kg/m3; and other characteristics conform to ASTM C33. Therefore the cold-pressing technique is a new and practicable approach to recycle nonmagnetic material from de-sulferization slag in future.

原文English
主出版物標題EARTH 2015 - Proceedings of the 13th International Symposium on East Asian Resources Recycling Technology
發行者International Symposium on East Asian Resources Recycling Technology
頁面990-997
頁數8
出版狀態Published - 2015
事件13th International Symposium on East Asian Resources Recycling Technology, EARTH 2015 - Pattaya, Thailand
持續時間: 2015 十一月 12015 十一月 4

Other

Other13th International Symposium on East Asian Resources Recycling Technology, EARTH 2015
國家Thailand
城市Pattaya
期間15-11-0115-11-04

    指紋

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

引用此

Chang, J. E., Tsai, C. T., Wu, C. C., & Hsu, T. K. (2015). Recycling nonmagnetic material from de-sulferization slag as coarse aggregate through cold-pressing technique. 於 EARTH 2015 - Proceedings of the 13th International Symposium on East Asian Resources Recycling Technology (頁 990-997). International Symposium on East Asian Resources Recycling Technology.