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《Bulletin of the Chinese Ceramic Society》 2015-02
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Study on the Ratio and Properties of Total Tailings Cemented Backfill Material

LI RUI-long;HE Ting-shu;HE Juan;College of Materials and Mineral Resources,Xi'an University Architecture and Technology;  
The material of full tailings backfilling was composed by slag,cement,buliding gypsum,gypsum,lime and a little naphthalene sulphate based superplasticizer. Orthogonal experiment was carried out. Range analysis and variance analyses methods were employed to analyze the most important factor that affects compressive strength of 3 d and expansion performance is the ratio of bassanite and FGD gypsum,the important factor that affects flowability is lime content,the secondary factors that affect flowability are the ratio of bassanite and FGD gypsum and gypsum content,which determines optimal formulation of experiment that is A3B2C3. Results showed that compressive strength of 3 d of optimal formulation is nearly 0. 75 MPa,compressive strength of twenty-eight days is nearly 2. 92 MPa,the flowability of slurry is 173 mm and the height of backfill is 64. 47 mm.
【Fund】: “十二五”国家科技支撑计划项目(2012BAB08B00);; 陕西省自然科学基金资助项目(2013JQ6015);; 西安建筑科技大学科技基金项目(JC1311)
【CateGory Index】: TD926.4
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