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kwh t ball mill ball mill kw calculator Grinding Mill China. Super Orion Ball Mill SO Ball mill for (kWh/t) bA ta Mixed 1414 » Learn More. Mill We can calculate the steel charge volume of a ball or rod mill and >>Chat Online; MODELING THE SPECIFIC GRINDING ENERGY AND BALLMILL
The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a rod mill, ball mill or pebble mill. AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill.
from to 34 kWh/t and Bond ball mill work index values vary from 6 to 24 kW/t for the same ores. Project design tonnages varied from 200 to 150,000 t/d, SAG mill sizes varied from 10 ft to 40 ft diameter in multiple SAG mills, and ball mill sizes varied from 7 ft to 27 ft in diameter.
breakage rate using the perfect mixing ball mill model but it does not take into account the mill''s power. That variable is introduced in the speci fi c breakage rate, expressed in t/kWh (Bazin, 2008a).
Calculation of energy required for grinding in a ball mill. Int. J. Miner. Process., 25: 4146. The Bond work index, Wi, as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding product.
5,5 and 6 h in the ball mill and then further grinding the slip in the MaxxMill to the sieve residues of 6,4 % and 5,5 % over 45 µm resulted in a total energy consumption of 16,9 kWh/t and 17,9 kWh/t, respectively, as compared with 27,8 kWh/t when the ball mill alone was .
Ball Drop Rock feed Ballmill SAGmill Primarycrushed(S)ABC Recyclecrusher T80(mm) kWh/t Ballmill SAG mill T80(mm) Recycle cru... _kWh/t Mi
BM = Ball mill specific energy from T 80 mm to final product P 80, using Bond''s Law, (kWh/t) W T = Total grinding mill circuit specific energy (kWh/t) Note that K BM is the composite of EF3, EF4 and EF5 factors for ball milling (Rowland, 1982). Morrell and SMCC Morrell (2004) developed a methodology for predicting specific energy with
The "SCSE" Parameter Enhancing the Usefulness of ... laboratory ball mill work index can be used to compare the grindability of different ores in ball . 4 ... used as the input to a power based equation to predict the kWh/t of a SAG mill circuit. If the ore is
Jan 07, 2015· Specific power consumption for clinker/gypsum grinding in a ball mill should be approximately: 3000 cm2 /g kWh/t 3200 cm2 /g kWh/t 3400 cm2 /g kWh/t 3600 cm2 /g kWh/t 3800 cm2 /g kWh/t 4000 cm2 /g kWh/t Note: The specific power demand of large grinding units is 1015% better than that of small mills. ...
Dec 18, 2013· where W is the specific grinding energy (kWh/t), W i is the Bond ball mill work index (kWh/t), F80 is the feed 80 pct passing size (μm), and P80 is the product 80 pct passing size (μm). It can be seen that in the regime in which the Bond equation is valid, energy use increases exponentially as product size decreases with constant feed size ...
Dry Ball Mill = kg / kWh = i ; Replacement Ball Size. Rowland and Kjos proposed the use of their equation for the determination of the initial and replacement media size. Azzaroni (1981) and Dunn (1989) recommended the use of the following expression for the size of the makeup media:
secondary crusher specific energy consumption kWh/t assume product size 35 mm; power draw backcalculates to 763 t/h × = 305 kW (45% of available power) ball mill throughput 734 t/h (use this as overall throughput at % availability) HPGR specific energy consumption, E HPGR = kWh/t
1 MultiCompartment Rod/Ball Mill Evaluation on Bauxite Operation Ana Soares and Júlio Almeida , Brazil ABSTRACT In mineral processing operations, the grinding circuit is a key step in the process to achieve the
Ball Mill Grinding Capacity Calculator Ball Mill Motor/Power Sizing Calculation Ball Mill Design/Sizing Calculator The power required to grind a material from a given feed size to a given product size can be estimated by using the following equation: where: W = power consumption expressed in kWh/short to (HPhr/short ton = kWh/short ton) Wi ...
difference up to 10% on the energy (kWh/T) for a similar grind. Optimization of mill performance by using online ball and pulp measurements J o u r n a l P a p e r The Journal of The Southern African Institute of Mining and Metallurgy VOLUME 110 NONREFEREED PAPER MARCH 2010 135 Table I Influence of speed and liner design on load dynamics
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)
Where W = Net power consumption in kWh/t Wi = Bond work index (either Imperial or Metric units) P = The 80% passing size of the ground product in µm F = The 80% passing size of the feed in µm . The test is a closed circuit dry grindability test performed in a standard ball mill.
The energy efficiency of ball mills for use in finish grinding is relatively low, consuming up to 3042 kWh/ton clinker depending on the fineness of the cement (Cembureau, 1997;Marchal, 1997).
is, the SAG mill produces about % more than the ball mill in the final product. The average consumed energy at SAG and ball mills to produce one ton of final product was kWh/t and kWh/t respectively. Thus, the ball mill consumes kWh/t, more energy than the SAG mill in producing the final product. The
A Bond ball mill work index is then performed on the mill product for the design of SAGball mill circuits. This is important because it was found that there was a 1– kWh/t higher ball mill work index if the – mm ball mill test feed size is obtained by SAG mill grinding compared with crushing.
Bond Ball Mill Work Index, BWi, kWh/t Bond Rod Mill Work Index, RWi, kWh/t Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have
ball mill work index was averaging only kWh/t, which is not hard. A rod mill work index fi gure was not found but was thought to be in the 16 kWh/t to 18 kWh/t range. The Xstrata Zinc 22 ft ID × 40 ft EGL over ow ball mill fl was installed at Mt Isa in 2009. This mill was put into single
The power consumption of raw material vertical mill system is /t lower than ball mill, that is to say: in one year, a 5000TPD cement plant can save energy in clinker grinding system: /t * 5000t/d * 300d=14,550,000 kWh, that means the cement plant clinker grinding system can save 14,550,000 kWh electricity one year. 2.
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