Metall. Res. Technol.
Volume 114, Number 3, 2017
|Number of page(s)||7|
|Published online||23 May 2017|
Influence of adding Sewage Sludge instead of Coal Powder in the sintering process
College of Materials Science and Engineering, Chongqing University,
400044, P.R. China
⁎ e-mail: email@example.com
Received in final form: 30 September 2016
Accepted: 11 January 2017
Adding Sewage Sludge (SS) in sintering process may provide an alternative for disposal of SS. Therefore, the combustion characteristics of SS and Coal Powder (CP) mixed with the sinter were compared by Thermogravimetric Analysis (TGA) and the effects of adding SS on metallurgical properties of sinter were investigated by sintering pot tests in this paper. TGA results show that the combustion characteristics of SS (5%)-Sinter are better than CP (5%)-Sinter at the same heating rate. Besides, it is beneficial to decrease the ignition temperature by adding more SS into the sinter. The results of sintering pot tests indicate that increasing SS from 0% to 9% in the sintering process can increase the tumbler strength from 62% to 68% and the shatter strength from 63% to 67.4%, and reduce the abrasion index from 4.5% to 3.8%. In addition, the S content in the sinter from sintering pot tests, obtained via X-Ray Fluorescence, decreases from 0.223% to 0.197% and the P content increases from 0.201% to 0.276%; however, these changes are acceptable for the sinter. All these imply that SS is not only a good fuel for sintering, but that adding SS in the sintering process is appropriate as it could improve the metallurgical properties of the sinter to some extent. This will provide a good basis for the practical use of SS in the sintering process of the steel plant.
Key words: co-combustion / TGA/DSC analysis / Sewage Sludge / sinter
© EDP Sciences, 2017
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.