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2017 Vol.54, Issue 1 Preview Page

Research Paper

Rheological Characteristics of Tailings Paste for Stope Backfill

갱도 뒤채움용 광미 페이스트의 유변학적 특성

Moon Young Jung1*
,
Yong Hyeon An1
정 문영1*
,
안 용현1
1세명대학교 바이오환경공학과
* Corresponding Author
28 February 2017. pp. 39-47
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Abstract

In this work, rheological constants measurement and flow tests on powder slurries and tailings paste were carried out in order to get information needed to recycle tailings into backfiller for an underground stope. The tailings paste was Bingham fluid which can flow from larger stress than critical shear stress(yield stress). Apparent viscosity of the tailings paste demonstrates shear thinning phenomenon which decreases with increasing shear stress. The plastic viscosity and the yield stress of the powder slurries predicted by Bingham equation increased in order of fly ash < cement < ground blast furnace slag(GBFS) < tailings. This indicates that in case of making pastes of four powder systems (cement-fly ash-GBFS-tailings) for the stope backfill, its rheology was most affected by the tailings. Fresh tailings pastes will increase their flowability by adding the fly ash and the GBFS which can enhance long compression strength of harden tailings pastes due to pozzolanic property, thus facilitating transportation to the underground stope.

Keywords
Tailings paste
Flow
Efflux time
Yield stress
Plastic viscosity

본 연구에서는 선광 광미를 갱도 뒤채움재로 순환자원화 하는데 필요한 정보를 얻기 위해 분체계 슬러리 및 광미 페이스트의 유변학적 정수 측정 및 유동성 실험을 수행하였다. 양양철광산 선광 광미 슬러리는 임계전단응력 이상에서부터 흐름성을 나타내는 빙햄유체 거동을 하며, 그의 겉보기 점도는 전단응력이 증가함에 따라 감소하는 전단담화 현상을 보여주고 있다. 빙햄식으로 파악한 분체 슬러리의 항복응력과 소성점도는 플라이애쉬 < 시멘트 < 고로슬래그미분말 < 광미 순으로 증가하고 있다. 이는 갱도 뒤채움용 4성분계(시멘트-플라이애쉬-고로슬래그분말-광미) 페이스트 제조 시, 그의 유변성은 광미에 의해 가장 많은 영향을 받는다는 것을 의미한다. 포졸란 특성이 있어 굳은 광미 페이스트의 장기 압축강도를 증진시킬 수 있는 플라이애쉬와 고로슬래그미분말의 첨가는 굳지 않은 광미 페이스트의 흐름성을 향상시켜 지하 깊은 갱도까지의 수송을 유리하게 만들 것이다.

키워드
광미 페이스트
플로우
유하시간
항복응력
소성점도
References
1
Cihangir, F., Ercikdi, B., Kesimal, A., Turan, A. and Deveci, A., 2012, "Utilisation of alkali-activated blast furnace slag in paste backfill of high-sulphide mill tailings: Effect of binder type and dosage," Minerals Engineering, Vol. 30, pp. 33-43.
10.1016/j.mineng.2012.01.009
2
Coussot, P. and Piau, J.M., 1994. "On the behavior of fine mud suspensions". Rheologica Acta, Vol.33, pp. 175-184.
10.1007/BF00437302
3
Coussot, P., Nguyen, G.D., Huynh, H.T., Bonn, D., 2002. "Viscosity bifurcation in thixotropic, yielding fluids". Journal of Rheology, Vol. 46, pp. 573-589.
10.1122/1.1459447
4
Erdogan, S.T., Martys, N.S., Ferraris, C.F. and Fowler, D.W., 2008, "Influence of the shape and roughness of inclusions on the rheological properties of a cementitious suspension," Cement and Concrete Composites, Vol. 30, Issue 5, pp. 393-402.
10.1016/j.cemconcomp.2008.01.003
5
Fall, M., Benzaazoua M. and Ouellet S., 2005, "Experimental characterization of the influence of tailings fineness and density on the quality of cemented paste backfill," Minerals Engineering, Vol. 18, pp. 41-44.
10.1016/j.mineng.2004.05.012
6
Fall, M., Benzaazoua, M. and Saa, E.G., 2008, "Mix proportioning of underground cemented tailings backfill," Tunnelling and Underground Space Technology, Vol. 23, pp. 80-90.
10.1016/j.tust.2006.08.005
7
Ferraris C.F., Obla K.H. and Hill R., 2001, "The influence of mineral admixtures on the rheology of cement paste and concrete," Cement and Concrete Research, Vol. 31, No. 2, pp. 245-255.
10.1016/S0008-8846(00)00454-3
8
Golder Associates, 1998, Paste technology for underground backfill and surface tailings disposal application, Golder Associates, Mississauga, Canada, pp. 1-12.
9
Grice, T., 2001, "Recent mine developments in Austrailia," Proc. of international symposium on mining with backfill, Seattle, USA, September 17-19, pp. 351-357.
10
Hwang H.J., Lee S.H. and Lee W.J., 2007, "Effect of particle size distribution of binder on the rheological properties of slag cement pastes," J. of the Korean Ceramic Society, Vol. 44, No. 1, pp. 6-11.
10.4191/KCERS.2007.44.1.006
11
Imran J., Harff P. and Parker G., 2001, "A numerical model of submarine debris flow with graphical user interface," Computers & Geosciences, Vol. 27, pp. 717-729.
10.1016/S0098-3004(00)00124-2
12
Jeong, S.W., Locat, J., Leroueil, S. and Malet, J.P., 2010. "Rheological properties of fine-grained sediments: the roles of texture and mineralogy". Canadian Geotechnical Journal, Vol.47, pp. 1085-1100.
10.1139/T10-012
13
Jeong S.W., 2014, "Rheological characteristics and debris flow simulation of waste materials," J. Korean Soc. of Civil Engineers, Vol. 34, No. 4, pp. 1227-1240.
10.12652/Ksce.2014.34.4.1227
14
Jung Y.W., 2008, "Mining Backfill Method and Application Case," Mine Reclamation Technology, Vol. 2, No. 1, pp. 20-28.
15
Lee H.W., Kim J.D., Yu S.K. and Kim T.H., 2013, "Property evaluation of tailings as the mining paste backfill material," J. Korean Soc. Miner. Energy Resour. Eng., Vol. 50, No. 1, pp. 124-133.
10.12972/ksmer.2013.50.1.124
16
Mindess S., Young J.F. and Darwin D., 2003, Concrete, Prentice Hall, New Jersey, pp. 93-114.
17
Park T.H., Noh M.Y. and Park C.K., 2004, "Characterization of rheology on the multi-ingredients paste systems mixed with mineral admixtures," J. of the Korea Concrete Institute, Vol. 16, No. 2, pp. 241-248.
10.4334/JKCI.2004.16.2.241
18
Potvin, Y., Thomas, E. and Fourie, A., 2005, Handbook on mine fill, ACG, Nedlans, Australia, pp. 1-179.
19
Song J.T., Park H.S., Byun S.H. and Yoo D.W., 2008, "Rheological properties of cement paste blended blast furnace slag of fly ash powder," J. of the Korean Ceramic Society, Vol. 45, No. 6, pp. 336-344.
10.4191/KCERS.2008.45.6.336
20
Song, W.K., Min, J.S., Sun, W.C., Shin, J. H., Lee, D.K., Lim, K.J., Jeon, Y.S., Jung, Y.W., Jung. Y.B., Ji, S.W., Han, K.C., Kwon, H.H., Kim, T.H., Shim, Y.S., Lee, J.S., Jung, M.C. and Cho, W.J., 2007, "A Study on Treatment Sangdong Tailings Yard Permanent," MIRECO Technology Book 2007-48 pp. 137-215.
21
Tattersall, G.H. and Banfill, P.F.G., 1983, The Rheology of Fresh Concrete, Pitman Advanced Publishing Program, p. 356.
22
Wang, A., Zhang, C. and Sun, W., 2003, "Fly ash effects : 1. The morphological effect of fly ash," Cement and Concrete Research, Vol. 33, pp. 2023-2029.
10.1016/S0008-8846(03)00217-5
23
Wu, D., Fall M. and Chi S.J., 2013, "Coupling temperature, cement hydration and rheological behaviour of fresh cemented paste backfill," Minerals Engineering, Vol. 42, pp. 76-87.
10.1016/j.mineng.2012.11.011
24
Yilmaz, E., Belem, T., Bussière, B., Mbonimpa, M. and Benzaazoua, M., 2015, "Curing time effect on consolidation behaviour of cemented paste backfill containing different cement types and contents," Construction and Building Materials, Vol. 75, pp. 99-111.
10.1016/j.conbuildmat.2014.11.008
Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 54
  • No :1
  • Pages :39-47
  • Received Date : 2017-01-06
  • Revised Date : 2017-02-22
  • Accepted Date : 2017-02-24
  • DOI :https://doi.org/10.12972/ksmer.2017.54.1.039
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