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Discharge arrangement Outotec provides a wide variety of discharge arrangements, such as overflow, peripheral, grate and open-ended. SAG and AG mills typically have grate discharge arrangements which can be either with or without trommel screens. SAG and AG mills with open-ended discharge arrangements are usually more efficient than grate ...
ball mill grade discharge design - interbc. Ball Mill Grade Discharge Design - estadoin, Grate Discharge Ball Mills Grates can be added to the discharge end of the ball mill to facilitate a steeper pulp How a Grate Discharge Ball Mill Works Here I try to explain how ground slurry is discharged from a grate ball mill How a Grate Discharge ...
the primary crushed feed ore and operates in closed circuit with pebble crusher. SAG mill discharge passes through grates and screened by a trommel with the oversize being recycled by conveyor back to the SAG mill. Combined product from the SAG mill (trommel undersize) and the Ball mill discharges into a common mill discharge hopper.
Grate-discharge Type The grate-discharge type of Ball Mill has a grate at the outlet of the shell and causes less excessive grinding, compared to the overflow type. Therefore, generally, it is best suited to grind materials up to the particle sizes ranging from 60 to 100 mesh. Compartment type
SAG and ball mills with grate discharge are not prone to locked charge events because of the high amount of rocks and balls compared to fine ore. The pulp dischargers of a SAG mill continually pump the finer material out of the mill, lowering the total amount of residual fine ore and thus improving the situation in respect to locked charge starts.
Improved Relationships for Discharge in SAG/AG Mills. The literature exposed a clear lack of previous research on the influence and performance 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 .
Nov 08, 2015· Trommel screen on ball mill, AG mill and SAG mill is a kind of separating device with reliable structure, high efficiency, easy installation and maintenance. Category People & Blogs
SAG and ball mills with grate discharge are not prone to locked charge events because of the high amount of rocks and balls compared to fine ore. The pulp dischargers of a SAG mill continually pump the finer material out of the mill, lowering the total amount of residual fine ore and thus improving the situation in respect to locked charge starts.
stage of grinding. A 4.7m x 7.5m Outotec grate discharge ball mill with an installed power of 2.6MW and Turbo Pulp Lifters is operated in closed circuit with 250mm cyclones to provide a 45 m product to flotation. The primary mill was initially commissioned as an Autogenous Grinding (AG) mill. During
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
without trommel screens. SAG and AG mills with open-ended discharge arrangements are usually more efficient than those with grate discharge arrangements. Trommels Outotec's range of proprietary trommels has been designed using CFD flow control measures in order to optimize the usage of the available space. Outotec® Spiral Turbo Pulp Lifter ...
SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING Tony Moon, RTZ What I'd like to talk about is probably one of the nastiest bits of mill design for a grinding circuit, and that is the choice of what do you use on a SAG mill discharge? Do you use vibrating screens or trommel screens? What many of you probably don't realize is that at
discharge pump (grate and pulp lifters) operates. The essential function of a pulp lifter is to transport the broken material and slurry from the discharge grate out of the mill. Hence, the design optimisation of pulp lifters affects not only the energy efficiency and throughput of autogenous grinding/semi-autogenous (AG/SAG) grinding
How a Grate Discharge Ball Mill Works. Previous Next. View Larger Image. 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. ...
May 08, 2015· Pegging of the discharge grates in SAG mills often occurs and this will result in a drop in throughput. The effect of new grates can be simulated in terms of .
To a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill performance. In general terms, lifter spacing and angle, grate open area and aperture size, and pulp lifter design and capacity must be considered.
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 is by optimizing the design of the discharge arrangement.
Outotec® MH Series Grinding Mills offer a cost effective, and easy to operate and maintain grinding solution across the mill lifecycle. The MH Series includes a range of SAG, ball, and rod mills in standardized sizes with a capacity of up to 3.1 MW installed power, and is based on over 100 years of experience with grinding technologies.
How a Grate Discharge Ball Mill Works. A grate assembly at the discharge en d of the mill permits retention of a higher ball charge (up to 50%) than is possible in an overflow mill which has a practical limit of around 40%. Behind the grates is a lifting compartment which .
Mar 03, 2016· ROCKY 3D DEM simulations of grinding media flow can be used to investigate the relative performance of comminution devices.
Grate discharge ball mill – OneMine Mining and Minerals TITLE: The Use of Mathematical Models of Grinding and Classification to Optimize Grinding Circuits at the Mt. Lyell Copper Concentrator, Tasmania. Online Chat Effect Of Grate Discharge Area Of Sag Mill . Effect of grate discharge area of sag mill.
Outotec TPL™ Our unique Outotec TPL™ technology improves grinding process efficiency – the primary grinding process can be intensified for hard ores and material transport can be improved for soft ores. TPL is an environmentally friendly technology used to achieve higher energy efficiency from the grinding mill.
Overflow discharge mill, diaphragm or grate discharge mill and centre- characteristics of the grinding media mass, density, ball size distribution standard sieves are used to determine quantitatively the size of the particles in eachet price great site to support engineers and technicians working every day cement ball mill.
A 4.7m x 7.5m Outotec grate discharge ball mill with an installed power of 2.6MW and Turbo Pulp Lifters is operated in closed circuit with 250mm cyclones to provide a 45 m product to flotation. The primary mill was initially commissioned as an Autogenous Grinding (AG) mill.
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