Optimization and Application of Phosphogypsum Filling Ratio in a Phosphate Mine
As a waste from the deep processing of phosphate rock,phosphogypsum is the most econom-ical aggregate filling material.Aiming at the status quo of 1∶4 filling ratio of phosphate rock cementing mate-rial and phosphamite gypsum,excess strength and high cost of cementing material,the backfill strength af-ter the filling ratio is adjusted to 1∶6 was analyzed through laboratory experiments and field sampling tests,combined with local standards and theoretical research reports.The research results show that the strength of the optimized filling body can meet the safety requirements of underground mines,and the annual consump-tion of cementing material can be reduced,and the production cost can be greatly saved.
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NSTL
万方数据
维普
