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The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics bond work index bulk density specific density desired mill tonnage capacity dtph operating solids or pulp density feed size as f80 and maximum chunk size product size as p80 and maximum and finally the type of circuit openclosed
Jan 06 2021 noise is quite lower in vrm when compared to a ball mill the noise is just 20 to 25 db which is lower and environment friendly lower specific power consumption per ton of cement it is just 50 to 65 of the ball mill consumption the metal wear of the unit product is low
In the cement production line producing 1 ton of cement need grind at least 3 tons of materials including raw materials fuel clinker mixed materialsgypsumgrinding operation consumes about 60 of total power in cement plants raw material grinding more than 30 while coal mill used in cement plant consumes 3 cement grinding about 40
May 01 2011 the energy used for the actual grinding process depends mainly on the hardness of raw materials and the type of mill used ie ball mill or vertical roller mill typically an electrical motor of the ball mill uses about 1415 kwhtonne of raw mix on the other hand a vrm motor uses about 78 kwhtonne on an overall basis a vrm consumes about 20 lower specific energy than a conventional
Jan 07 2015 example two compartment cement mill diameter 405 m length 12 m filling degree 196 tons at 30 filling degree mill speed 1627 rpm c 0223 from the figure then k 0223 196 405 1627 288 kw 82 calculation of the specific consumption of energy per ton of clinker the specific consumption of energy per ton of clinker varying according to whether the clinker is soft or hard
Especially as the third generation of antiwear alloy high chromium white cast iron developed successfully so that more than 45 m of largescale cement mill ball consumption to 30 50 g t medium and smallscale cement mill ball consumption also reduced to only 100 g t or so the new material revolution has greatly improved productivity and economic returns it was only in the mid
Dec 02 2019 this operation typically consumes somewhere between 30 to 50 kwh per tonne of cement produced and is the single largest point of consumption of electrical power in the process
Ratio of actual to predicted kwhtonne are as under for ball mill with an increase in the power consumption of the mill ie kwhtonne of raw meal vcm and ball mills for cement grinding
Power consumption per ton of cement can be reduced by 8 12 kwh representing 15 to 30 saving over a traditional ball mill system system output can be increased by more than 100 specific energy consumption is around 30 kwhtcement for grade 325 and around 33 kwhtcement for grade 425 miit 2012 p25
Keeping the vibration values on the main driving motors less than 4 mms by periodical maintenance the specific electrical energy consumption of the mill has reduced by 216 to 2497 kwhton
Dec 08 2009 re how to estimate the wear rate for ball mill most practical way to by measuring empty height and calculating the volumetric filling of grinding mediaalternative way to make track of mill main drive kw consumption reduction and add makeup charge according to the extent of fall in power consumption
The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics bond work index bulk density specific density desired mill tonnage capacity dtph operating solids or pulp density feed size as f80 and maximum chunk size product size as p80 and maximum and finally the type of circuit openclosed
Aug 15 2019 how hpgrs increase energy efficiency depending on the requirements of the circuit high pressure grinding rolls have been found to consume as much as 35 less power than conventional sag millbased circuits this amounts to between 08 and 30
Mar 11 2021 average kwhton of material ground 2608150 174 kwh power consumption per ton of clinker with a conversion ratio for consumption 155 1 174 x 155 27 kwhton using 4 gypsum 1 ton clinker 104 tons of cement therefore power consumption per ton of cement 260 kwh in this manner list all sections of the plant see table 4
Fcb emill fives cement grinding minerals thanks to a bed material grinding concept the vertical fcb emill offers power consumption reduced by 50 compared to the ball mill
Grinding media consumption is one of the major operating costs in mineral processing industry it was found that the consumption of media in ball mills during grinding operation can be up to 50
In 2011 the clinker capacity was expanded from 31 to 40 million tonnes per year by using stateoftheart technology heidelbergcement reduced specific energy consumption and co2 emissions per tonne of cement and increased the use of alternative fuels with the installation of the new ball mill the cement grinding capacity is increased in line with the expanded clinker capacity in the next three to four years strong cement consumption
Ratio of actual to predicted kwhtonne are as under for ball mill with an increase in the power consumption of the mill ie kwhtonne of raw meal vcm and ball mills for cement grinding
Electricity consumption per tonne of cement for few selected countries lighting pumps and services 400 530 source ref 24 an electrical motor of the savings 116118 ball mill uses about 1415 kwhtonne of raw mix on the other electrical energy savings of up to 8 can be achieved through the hand a vrm motor uses about 78
Dec 29 2011 the finished product is then conveyed to large holding tanks called silosequipment lubricants used ball mills conveyers id fans gear oil greases all purpose ep type high temperature greasev captive power plant cpp sectionprocess plants like cement plants are power intensive and as grid power may be insufficient orerratic many
Oct 23 2015 better product quality can be achieved as compared to the ball mill product due to the better options for separate grinding for example in additive cement production the blast furnace slag has to be ground to blaine values of 5000 cm 2 g water demand and setting times are similar to that of a ball mill cement under comparable conditions
We believe that milling of raw materials can be done more efficiently we strive to reduce energy consumption of ball mills by up to 100 with the introduction of a conical ball mill ball mills in numbers ball mills were invented in xix century and have not changed much since then efficiency of a ball mill is only about 6 energy consumption in cement ball mills is in the range of 44 to 77 kwh per ton of
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