%0 Conference Paper %A Yan, S. %A Jiao, H. %A Chen, X. %A Yang, Y. %A Han, Z. %A Liu, Z. %A Sun, G. %D 2017 %T Yield stress of unclassified tailings paste based on L-Box method %P 87-93 %E A. Wu & R. Jewell %C Beijing %8 16-18 June %B Paste 2017: Proceedings of the 20th International Seminar on Paste and Thickened Tailings %X The rheological parameters of unclassified tailings paste were tested by L-Box method and using a vane-rheometer in order to calculate the frictional drag, and then detect the results accuracy of L-Box method. The results show that, yield stress increased from 68.9~73.4 to 212.4~225.1 Pa along with the increase of paste concentration from 72 to 78%. Furthermore, yield stress increased exponentially with slurry concentration and featured a sharp increase when concentration increased from 76 to 78%. The results of L-Box method and vane-rheometer were similar, although that of the latter was slightly greater, with the deviation being 0.65 to 11.89% (its average being 7.18%). The calculated frictional drag was 3.39 ~ 6.6MPa/km with a backfill capacity of 60 m3/h, pipe diameter of DN150, and slurry concentration of 74~78%. %1 Beijing %I University of Science and Technology Beijing %U https://papers.acg.uwa.edu.au/p/1752_10_Yan/ %R 10.36487/ACG_rep/1752_10_Yan