effect of grate discharge area of sag mill performance manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai effect of grate discharge area of sag mill performance supplier create the value and bring values to all of customers.
the effects of grate wear on mill performance to be quantified. Fig. 13: Breakage rates of all surveys. The calculated breakage rates (Fig. 13) will be a useful measure of the ch ange in mill ...
SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING ... 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 ... screen area, for roughly 30,000 tons a day or 1,300 tons an hour. These trommels were
Different combinations of SAG mill ball charge and grate open area were tested until 2006. A higher load level was achieved after several changes in the grate design that prevented both liner and grate breakage. Upon resolution of issues related to the mill grate design, the project achieved the target throughput of 41 kt/d. Phoenix
Its performance depends on the mill size and design, the grate design, and mill operating conditions, such as mill speed and charge level. The difficulties associated with slurry transportation from SAG mills have become more apparent in recent years with the increasing trend to build larger-diameter mills for grinding high tonnages.
Mill Liner Life Performance. 30 25 20 15 10 5 0. DE Middle Liner DE Middle Pulp Lifters DE Grate DE Outer Pulp Lifters Discharge Cones Months. BRADKEN COMPETITOR. The Discharge End (DE) pulp lifter is a critical component of autogenous (AG) and semi-autog-enous (SAG) grinding mills, having a significant impact on the throughput, efficiency and ...
Grate discharge Dry Grate discharge Wet Overflow discharge Wet Figure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4
Sep 01, 1986· A 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 ...
Here I try to explain how ground slurry is discharged from a grate ball mill (or SAG). How it works is, the slurry flows across the grate as it would a screen panel. On the other side of the grate/screens are veins like a pump impeller. As the mill turns/rotates the slurry is "pumped" out and discharged. Discharge Grates The natural flexibility of rubber has allowed rubber manufacturers to ...
The effect of liner wear on SAG mill performance has gained much attention in recent years. It is commonly observed that the three key performance criteria of SAG milling; throughput, power and product size all improve as the liner wears. The increase in throughput is generally ascribed to the increase in the grate apertures and...
Jun 23, 2020· Converting a mill from an overflow to a grate discharge arrangement leads to an increased power draw. This happens because the installation of the grate discharge arrangement enables the mill to run with a lower level of slurry due to it being no longer necessary for the slurry to build up inside the mill until it overflows from the mill discharge.
Different combinations of SAG mill ball charge and grate open area were tested until 2006. A higher load level was achieved after several changes in the grate design that prevented both liner and grate breakage. Upon resolution of issues related to the mill grate design, the project achieved the target throughput of 41 kt/d. Phoenix
Pulp Lifters and Cone Discharge of SAG Mills Cone discharge design affect: • Discharge flow capacity (then, mill capacity) • Slurry trajectory • Slurry return from the trunnion • Use of the trommelarea for clasiffication • Excessive wear in preferential areas of the trommel 1 9 8 7 6 5 4 3 2 1 0 1 1 1 2 1 3 1 4 1 6 5
(AG), semi-autogenous (SAG) and grate discharge ball mills. The flow capacity (grinding capacity) of these mills is strongly influenced by the discharge grate design - open area and position of apertures, as well as the performance of the pulp lifters. As mill sizes have progressively increased and closed-circuiting has become more popular
mill performance could become worse or better by putting in a new shell liner. Data from pilot plant test work illustrates the influence of the shell lifting effect on the grind for a primary grinding duty. Figure 5 shows the evolution of the mill discharge product size in relation to the lifting effect of the liners.
carry the slurry from the discharge grates to the discharge trommel for exit from the mill. The existing radial pulp lifters were replaced with a proprietary design known as the Turbo Pulp Lifter or TPL™. Figure 2 - Crash stop of SAG mill showing pooling The mill grate discharge included square pebble ports which had very limited open area at the
Metallurgical ContentMill Internals Grinding Mill Shell DesignSemi-Autogenous Mill Liners Designs Alloys and Maintenance ProceduresGood Mill Liner Alloys And Design Installation and Prudent Operational PracticesGeneral Liner Design PrinciplesIdeal Liner DesignSemi-Autogenous Grinding (SAG) Mills"High-Low" Liner SystemsFully Autogenous Grinding (FAG) MillsDischarge End DesignsDischarge End ...
Its performance depends on the mill size and design, the grate design, and mill operating conditions, such as mill speed and charge level. The difficulties associated with slurry transportation from SAG mills have become more apparent in recent years with the increasing trend to build larger-diameter mills for grinding high tonnages.
Jan 01, 2007· 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.
The discharge rate depends on how efficiently the discharge pump (grate and pulp lifters) operates. Similar to the impeller design affecting pump capacity, the pulp lifter design affects the discharge capacity (or mill throughput) of AG and SAG grinding mills.
SAG mill throughput as a function of grate open area As shown in Figure 2 the grate open area has a strong effect on Sossego SAG mill throughput. The nominal capacity of the circuit should be achieved with a combination of 13.5% ball charge and 10.8% open area with 3 and 3.5 inch apertures.
SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computer-based modeling of charge motion in SAG mills and on established good design practice. Liner design needs to respond to the process aspects of mill liner action that are critical to good SAG mill performance, i.e., the impact of shell liners on the grinding action and of grates ...
Mineral movement simulation through the grates and pulp lifter in a SAG mill and evaluation for a new grate design using DEM ... grates play a preponderant role in the good performance of mill. Govender et al. (2013) studied the ... slots and a total evacuation area of 5.84 m2. The discharge transport ducts have been included in detail
carry the slurry from the discharge grates to the discharge trommel for exit the mill. The existing from radial pulp lifters were replaced with a proprietary design known as the Turbo Pulp Lifter or TPL™. Figure 2 - Crash stop of SAG mill showing pooling . The mill grate discharge included square pebble ports which hadvery limited open area ...
carry the slurry from the discharge grates to the discharge trommel for exit from the mill. The existing radial pulp lifters were replaced with a proprietary design known as the Turbo Pulp Lifter or TPL™. Figure 2 - Crash stop of SAG mill showing pooling The mill grate discharge included square pebble ports which had very limited open area at the
Online Chat
Sales Hotline