of grate/pulp lifter design in AG/SAG mill discharge The current understanding from literature lacks knowledge of mill content size distribution and its effect on discharge through the grate at various aperture sizes and radial positions It also indicates that in order to advance the understanding in a meaningful way a more mechanistic approach must be taken to modelling these principles
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Get Price· In grate discharge mills the product is discharged primarily due to hydraulic gradient from the feed end to discharge end Hence there is a possibility for much quicker transport of material through the mill which is being accomplished in overflow mills by higher circulating developments in understanding the importance of material transport in performance improvement of AG/SAG
Get PriceDesigned for discharge efficiency The role of the grate is to allow the discharge of the material ground in the mill via the slots With our range of alloys and design experience we can offer the longest possible lifetime with the optimal grinding efficiency The design of the grates will depend on Drilling pattern Mill speed rpm Maximum grinding media diameter mm Grinding media filling
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Get PriceFor grate discharge mills the charge should occupy about 50% of the mill volume Bond developed a relationship that can be used to determine the percent charge by volume as a function of the vertical height above the charge He and the radius of the mill R Charge% = 113 63H C /R However Morrell identified significant errors from this estimate when using small media sizes Charged
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Get Priceof grate/pulp lifter design in AG/SAG mill discharge The current understanding from literature lacks knowledge of mill content size distribution and its effect on discharge through the grate at various aperture sizes and radial positions It also indicates that in order to advance the understanding in a meaningful way a more mechanistic approach must be taken to modelling these principles
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Get PriceIn grate discharge mills the product is discharged primarily due to hydraulic gradient from the feed end to discharge end Hence there is a possibility for much quicker transport of material through the mill which is being accomplished in overflow mills by higher circulating load Recent developments in understanding the importance of material transport in performance improvement of AG/SAG
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Get PriceThe discharge end of the Grate Discharge Ball Mill has at least ten times the discharge opening area through the grate slots compared to the common trunnion overflow type mill The discharge grates are designed to run clean and free of any blinding or choking The pulp level in the mill may be varied by merely changing the pulp dilution Service And Support Optimization of mill performance
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Get PriceA model for the effect of flowrate and viscosity of slurry on the hold up of slurry in a grate discharge grinding mill has been developed Given detailed specifications of the grate design such as the area in the grate within which the holes are situated the number of holes per m 2 and the hole size and the flowrate and viscosity of the slurry flowing through the mill the model provides
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Get PriceA model for the effect of flowrate and viscosity of slurry on the hold up of slurry in a grate discharge grinding mill has been developed Given detailed specifications of the grate design such as the area in the grate within which the holes are situated the number of holes per m 2 and the hole size and the flowrate and viscosity of the slurry flowing through the mill the model provides
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Get PriceIdeally the discharge rate through a grate pulp lifter assembly should be equal to the discharge rate through at a given mill hold up However the results obtained have shown that conventional
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