Oct 01, 2009· Inferential measurement of SAG mill parameters V: MPC simulation Apelt, ; Thornhill, 00:00:00 This paper discusses a case study application of inferential measurement models for semiautogenous grinding (SAG) mills and is the last in a fivepart series on Inferential Measurement of SAG Mill Parameters. Inferential ...
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domestic × m SAG mill ( diameter represents nominal diameter, and length of the mill represents the effective grinding length inside the end liners and discharge grates), × m ... processing plants outside of China, the power rating of the ball mill should be higher than that of the SAG mill .
100 90 80 Cum % Passing 70 60 50 40 30 20 10 0 1 100 5660 kW at 503 tph 80 SAG feed SAG discharge Percentage Passing 60 Rod Mill Disch SAG Mill Discharge 40 20 10 100 0 1 10 100 1000 Size (mm) Particle Size, mm 自磨机进出质量平衡模型 给矿,吨/小时 粒度,毫米 磨机给矿, t/h 固体量,吨 产品 ...
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INFERENTIAL MEASUREMENT OF SAG MILL PARAMETERS IV: INFERENTIAL MODEL VALIDATION ... The Results and Discussion first looks at model validation on plant data and model limitations. The model characteristics are then discussed further, including sensitivity analysis, calculation ... SAG mill total feed (SMTF) is calculated by mill model inversion.
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discharge head ball mill pdf | Solution for Mining Quarry. The SAG mill screen undersize, and the ball mill discharge combine, . In grate discharge type ball mill, a grate is provided at the discharge end of shell.
The primary mill is a Ø m inside shell diameter x m EGL ( ft x ft) SAG mill equipped with a 4,900 kW variable speed drive. The SAG mill discharge passes over a trommel. The trommel oversize material is discharged onto a conveyor and the pebbles are crushed in a 315 kW pebble crusher prior to return to the SAG mill feed.
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SAG is an acronym for SemiAutogenous Grinding. SAG mills are autogenous mills but use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' () in diameter, powered by a 28 MW (38,000 HP) motor.
The ball mills, the second stage grinding equipment, are in diameter and long, each with two 7800 kW motors. 52 magnetic separators are used in each of the processing lines. Two concentrate thickeners, each 45m in diameter and four tails thickeners each 90m in diameter. Four dewatering buildings, each containing seven press filters.
Energy requirements for crushing and HPGR options can now be determined in addition to AG/SAG mills, and with Mic, ball mills. The results from conducting the SMC Test are used to determine the socalled dropweight index (DWi) which is a measure of the strength of the rock.
SAG mill has a much larger diameter compared to its length. Yet the SAG mill of Newmont's Yanacocha mine in Peru is a single stage mill (no ball mill after the SAG mill) and has a diameter and length of 32', driven by a MW GMD from ABB. Above the Arctic Circle in Sweden, Boliden has just installed two 38' diameter mills with
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AG/SAG mill test methodology which allows mill performance to be evaluated would lower costs, reduce material and time to gather the data required. Previous work using pilot scale AG/SAG mill tests with mills between and in diameter have shown that pilot scale tests can be used to successfully predict aspects of
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2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up (Bond's Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)
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