### SAG Milling in Australia Revised Submission

efficiency of the mill discharge system for slurry and pebble removal, and lining Use of DEM and CFD for optimising the design of mill liners, grates and pulp lifters Innovative pulp lifter systems circuiting of the SAG mill and ball mill additions topping the list.

Read More### Overflow VS Grate Discharge Ball or Mill Why Retrofit

Ball Mill Grinding. Contrary to the usual belief, material does not discharge through the grates at the bottom. In fact it is carried up in the ball load so that the greater portion passes out from the ball load on the upturning side of the mill, in the grate area from about half way below the centerline of the mill,

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Effect Of Grate Discharge Area Of Sag Mill Performance. Figure 4 Los Bronces SAG mill 2 discharge grate and it has been shown that a large porting open area has an adverse effect on what is a grate discharge in a ball mill mathaborewells effect of grate discharge area of sag mill greatermscfc .

Read More### Effect of port configuration on discharge from a HICOM mill

Effect of port configuration on discharge from a HICOM mill. Large ports have discharge rates that are 1.6 higher per area than smaller ports. The discharge rates from small ports are independent of their relative location. Coarse particle flow through the grate of a dry SAG mill into the pulp chamber was simulated by Cleary

Read More### (PDF) Understanding the effects of liner wear on SAG mill

reduction in the grate open area fraction from 0.124 to 0.091.When considering the discharge functions for the new designs (Surveys 3, 4 and 5) it can be seen that th ere is little difference

Read More### Effect of port configuration on discharge from a HICOM mill

Cleary (2006) examined the axial transport and discharge of coarse rock in a ball mill using a very simple permeable wall to represent the effect of a grate. Coarse particle flow through the grate of a dry SAG mill into the pulp chamber was simulated by Cleary (2004) and slurry discharge by

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sag mill discharge chute milset. sag mill conveyor discharge chute . with the ball mill discharge in a common sump and is of grate discharge area of sag mill performance ag sag discharge ball mill conveyor discharge chute .

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Figure 8.4 The effect of mill speed on the power drawn by a rotating mill. The liner profile and the stickiness of the pulp in the mill can have a significant effect on the actual critical velocity. Mills usually operate in the range 65 82% of critical but values as high as 90% are sometimes used.

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Read More### STARTLING EFFECT OF BALL SCATS REMOVAL ON SAG MILL

crusher, Table 3. The interior of the mill is illustrated in Figure 1, showing the length and filling of the mill, and low lifters on top of standard AMS grid type liners. The detail shows sections of the discharge grate (18mm round holes extending to near the centre of the grate), and pebble ports (75mm round holes).

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The 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.

Read More### Turbo Pulp Lifter (TPLTM) An Efficient Discharger to

The discharge rate of the product material depends on how efficiently the discharge pump (grate and pulp lifters) is operating. Similar to the impeller design affecting the pump capacity, the pulp lifter design affects the discharge capacity (or mill throughput) of the SAG/AG grinding mills.

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effect of grate discharge area of sag mill yvtc. Mill LinersFL effect of grate discharge area of sag mill. rate way the critical wear areas of your mill and thus estimate and calculate the useful lifeabrasion and impactThe grinding capacity can be easily affected by the liner design,discharge and support grates

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discharge grates, along the pulp lifters and its discharge from the mill is an important contributor to the efficiency of the grinding process within a SAG mill. Poor transport of finer ground material can adversely affect grinding leading to excess energy consumption and over grinding of fine material.

Read More### SAG MILL DISCHARGE SCREENS TROMMEL vs. VIBRATING

This next picture is a scale drawing of one of the trommels. The slurry discharges out of the mill from the grates in the slot between the grates and the head. The oversize falls into a bucket wheel on the discharge end of the trommel, gets picked up as the trommel revolves and

Read More### the diameter of the discharge of the mill

Mill sizes range from 1.6m (5ft) diameter through to 11.6m (38ft) diameter, all carrying The discharge of the AG/SAG mill is fitted with a grate discharge, where Contact Us Rod mills, how they function

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Equipment effect of grate discharge area of sag mill performance. effect of grate discharge area of sag mill performance. the of and to a in that is was he for it with as his on be .

Read More### Slurry discharge capacity of autogenous and semi

Slurry discharge capacity of autogenous and semi autogenous mills and the effect of grate design Article in International Journal of Mineral Processing 46(1 2)53 72 April 1996 with 176 Reads

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Read More### Optimizing your SAG mill operation International Mining

Pebbles flow back. The commercially viable and industry accepted alternate is a grate discharge trunnion supported mill or a grate discharge shell supported mill using pulp lifters. The only way to eliminate the problem of flow back and carry over of slurry and pebbles

Read More### Improving Autogenous/Semi Autogenous Grinding

While flow back of slurry leads to pool formation, flow back of pebbles increases the quantity of critical size material in the mill. The amount of pebbles passing through the grate increases with the angle of the grate. A DEM simulation of this scenario for a 36 ft diameter SAG mill is shown in Figure 5.

Read More### Slurry discharge capacity of autogenous and semi

Abstract. A laboratory based study of tumbling mills has been undertaken in which the mill speed, grate open area and the position of the apertures were systematically varied and their effect on the relationship between water flowrate and hold up measured. It was found that flow occurred in two distinct zones.

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Equipment effect of grate discharge area of sag mill performance. effect of grate discharge area of sag mill performance. the of and to a in that is was he for it with as his on be .

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Figure 1.2 Schematic Diagram of a Grate Discharge Grinding Mill . .. effect of liner/lifter profile on the discharge capacity of dry ball mill products. . and it is a reliable method for analyzing engineering problems in mining and mineral processing.

Read More### Effect Of Grate Discharge Area Of Sag Mill

Effect Of Grate Discharge Area Of Sag Mill Performance. The Selection and Design of Mill Liners MillTraj. The Selection and Design of Mill Liners. 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 generally now used for discharge grates .

Read More### Improved Relationships for Discharge in SAG/AG Mills

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

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Effect Of Grate Discharge Area Of Sag Mill Performance. how a grate discharge ball mill works The Selection and Design of Mill Liners. Flow in a Grate Discharge Grinding Mill. Central Discharge Ball Mill

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May 8, 2015 Pegging of the discharge grates in SAG mills often occurs and this will The effect of new grates can be simulated in terms of new open area, Get Price The SCSE Parameter SMC Testing. are indirectly related to ore hardness. They were originally developed for use by the AG/SAG mill o grate open area of 7% o apertures in the grate are 100

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