Zhang, G, Yang, Z & Wang, YQ, Gao, Q 2014, 'Application of research on a new cementing material for full-tailings backfill in the layered filling mining method at the Gaoguanying Iron Mine', in Y Potvin & T Grice (eds), Proceedings of the Eleventh International Symposium on Mining with Backfill
, Australian Centre for Geomechanics, Perth, pp. 251-258.
A new kind of binding material made from tailings powder (named KWF) was invented and put into practice by the authors based on the stage subsequent-filling method in Sijiaying Iron Mine. To adapt KWF to Gaoguanying Iron Mine with upward-layered cut-and-fill mining method, the authors analysed the tailings’ particle size distribution, adjusted KWF's suitability to this mine, compared different binding materials test results on pure cement and other cementitious material under the same conditions in order to compare with those of KWF. The results showed that full-tailings backfill strength mixed with KWF is 1.3-1.6 times higher than that with cement and 1.7-1.9 times higher than that with the other cementitious material. Since the tailings at Gaoguanying mine contains more fine grains and higher clay content, full-tailings filling strength mixed by KWF cannot meet the required design strength (mine requirement strength). Therefore, further optimisation trials were done to modify KWF compositions. New compositions are quicklime 3.5%, hemihydrate gypsum 15% and admixture 1.5%. The corresponding seven day cured fill mix unconfined compressive strength (UCS) reached 1.43 MPa. With 1.5% early strength agent added, the full-tailings KWF fill mix’s strength increased to 1.54 MPa, which fully meets the design strength for a safe layered backfill method at Gaoguanying Iron Mine.
Deng, D, Gao, Y & Kang, R 2009, ‘Mechanics properties of cementation powder-tailing backfill material’, Journal of Shihezi University (Natural Science), vol. 27, no. 1, pp. 88-91.
Dong, L, Gao, Q & Nan, S 2013, ‘Performance and hydration mechanism of new super fine cemented whole-tailings backfilling materials’, Journal of Central South University (Science and Technology), vol. 44, no. 4, pp. 1571-77.
Du, J, Gao, Q & Nan, S 2012, ‘Develop on a new cementing material of full tailing backfilling’, Metal Mine, vol. 43, no. 5, pp. 152-4.
Fan, Z, Liu, P & Ming, S 2011, ‘Study on filling characteristics of high clay tailing cemented by soil stabilizer’, Metal Mine, vol. 24, no 9, pp. 61-4.
Gong, J, Wang, P & Gao, W 2012, ‘Application of the whole tailing cemented filling technology on mined out space treatment in Jinzhao Iron Mine’, Nonferrous Metals, vol. 64, no. 6, pp. 17-9.
He, H, Gao, Q & Wei, W 2012, ‘Experiment and improvement on the performances of a new cementing material used for unclassified tailing filling’, Mining Research and Development, vol. 32, no. 4, pp. 11-4.
Li, M, Gao, Q & Wang, Y 2013, ‘Pilot tests on the new cementing materials preparation for filling in Sijiaying Iron Mine’, Metal Mine, vol. 22, no.8, pp. 153-6.
Wang, F 2008, ‘Application of full tailing consolidated filling in Mazhuang Iron Mine’, China Mine Engineering, vol. 37, no. 5, pp. 23−4.
Wang, H, Jiang, X & Bai, Z 2002, ‘Research and practice of new cementing materials backfilling goaf’, Mining Technology, vol. 2, no. 3, pp. 35-7.
Wei, W & Gao, Q 2012, ‘Application of uniform design method in mix proportion design of new cementing material’, Mining Research and Development, vol. 32, no. 6, pp. 29-30.
Wei, W, Gao, Q & Nan, S 2012, ‘Influence of fly ash performance of slag cemented backfilling materials’, Metal Mine, vol. 31, no. 10, pp. 162-4.
Wei, W & Gao, Q 2013a, ‘Strength prediction of backfilling body based on modified BP neural network’, Journal of Harbin Institute of Technology, vol. 45, no. 6, pp. 90-5.
Wei, W & Gao, Q 2013b, ‘Effects of water-reducers on strength of neotype whole-tailing cementing materials’, Concrete, vol. 23, no. 5, pp. 80-2.
Wei, W, Gao, Q & Yang, Z 2013, ‘Field mechanical experiment of neotype whole-tailing cementing materials’, Metal Mine, vol. 18, no. 8, pp. 150-2.
Yang, Y & Gao, Q 2012, ‘Experimental study of a new commenting material using tailing’, Chinese Journal of Rock Mechanics and Engineering, vol. 31, no. 1, pp. 2906-11.
Zhao, C & Hu, N 2008, ‘Application and practice of new filling material in Jiaojia Gold Mine’, Nonferrous Metals, vol. 60, no. 2, pp. 129-34.