Research On Backfilling Filling Technology In Liu Tang Fang Iron Mine

Filling system is an important system, Liu TangFang ore is also an important link in the underground mining and surface processing link, the pros and cons of filling system decide the Liu TangFang production and development of the mine. Under this background this paper looks the large diameter hydrocyclone cone as the main body in the enrichment grading, studies the mixing barrel for pulping equipment in high concentrations of low concentration backfilling filling process. And the cone hydrocyclone enrichment grading principle, whose enrichment grading performance is verified by laboratory tests; Backfilling materials by Liu TangFang iron ore grade filling material performance experiment was carried out and proportioning optimization filling pulp; Backfilling materials research Liu TangFang iron filling technology and intelligent control system, through the use of industrial practice obtains the good effect, the practice proved Liu TangFang iron mine backfilling filling technology has practical and promotion value.In the multi-cone hydrocyclone concentrate grading principle study, using computer numerical simulation methods, numerical simulation of multi-cone hydrocyclone internal solid-liquid two-phase flow field, obtained more excellent cone hydrocyclone concentrate grade performance, indicating the feasibility of its application in the tailings dewatering.In the multi-cone hydrocyclones laboratory and semi-industrial test process, using hydrocyclones different sizes and structures, in the same feed and operating conditions, to concentrate grading performance test. Experimental results validate the multi-cone hydrocyclone concentrated in low concentrations tailings grading process, with large capacity, high underflow density, high yield and low feed pressure, Spigot clogging and other advantages.Liu TangFang iron ore grade backfilling as filling aggregate, physical and chemical characteristics and according to the different proportion of added cement the slump of the filling pulp after analysis, the compressive strength of filling body and secrete water analysis, illustrates the backfilling materials Liu TangFang iron ore grade as filling aggregate completely satisfies the requirement of underground filling mining.On the basis of the study and test, the Liu TangFang iron mine backfilling filling technology research, developed the first domestic sand free warehouse, short process, intelligent backfilling filling process system. The process system by Liu TangFang iron ore industry practice, achieved good effect, makes the utilization rate of backfilling and filling slurry concentration is above 70%.