Grinding Mill Charge Detection Sensors. The throughput and efficiency of a SAG mill depends on the volumetric load: An overloaded mill has reduced coarse ore breakage, as the cascading balls and rock cannot drop far enough, reducing kinetic energy for breakage.
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
Exercise 5 in Demo: New Discharge Grates in SAG mills, 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 new open area, size of apertures or new pebble ports [7/27 Online] Optimisation of the Sossego SAG mill | Mauricio,
Fresh ore is continually conveyed into the mill feed chute and is crushed until small enough to pass though the openings in the discharge grates. The feed rate is limited by the horsepower available to turn the mill and the and the maximum weight the hydrostatic trunnion bearings which support the turning mill shell can withstand.
angle increases the mill's outlet flow. Keywords: grate, SAG-Mill, DEM-Simulation, flow-back, carry-over 1. Introduction Size reduction of ores has an important role in the process of obtaining various metals. For example, for copper the ore must be separated from the mineral and …
Grate discharge ball mill is a main equipment to grinding kinds of cushed raw materials. It has been widely used in manufacturing industries,such as cement,new building materials,refractory materials,glass ceramic and other industries. 2. Specification
Working pricinple OF Grate discharge ball mill / bauxite ball mill / powder grinding mill. Ball mill,a kind of horizontal drum-type rotating device, is a grate mill withexternal gear and double bins. Materials shall be evenly charged through quill shaft in feeding device into the first bin, which hasstep or waved lining with steel balls in ...
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.
Designed 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 ...
Mill was ordered but the project was cancelled prior to installation. It is stored at manufacturer warehouses or storage sites. Manufacture and Design Grate discharge Diameter 38' Length 25'5" flange-to-flange EGL 22' Components / Inclusions Feed chutes Discharge grates Steel pulp lifters SAG mill trommel Mill braking system Hydraulic jacking ...
The grinding circuit for the Copper Mountain project consists of one FL SAG mill and two FL ball mills. Figure 1 - Overview grinding circuit The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long. It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334
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 general arrangement of AG/SAG mills discharge system is shown in Figure 1. BREAKAGE DISCHARGE
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.
Mar 02, 2010· 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 …
of overflow-discharge mills but not to the same extent in grate-discharge mills. This pool is situated more or less symmetrically with respect to the axis of the mill and therefore does not draw significant power. Austin recommends K = 10.6 for overflow semi-autogenous mills. A value of K = 9.32 makes Austin's formula agree with Morrell's data
> Engineering approaches have highlighted mill performance with mill modelling and the use of improved materials > Liner design,with the advent of large diameter SAG mills, the issues of design, selection, monitoring and evaluation of mill performance is critical > Mill trajectory modelling can be used to great effect in improving liner design
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
AG/SAG Mill Liners. We have supplied rubber pulp lifters up to 38 ft diameter SAG mill. We are pioneers in design of both radial and curved pulp lifters. We also design and manufacture Rubber grates and discharge cones.
ucts for ball and SAG mill applications, specifically in areas such as grates and shell and head protection where our intimate understanding of discharge flow dynamics is beneficial. Above: Model mill for optimis-ing design of grate discharge assembly Above top: Typical grate discharge assembly Above bottom: New compos-ite SFL plates for SAG mill
Vulco™ discharge grates have ˚exibility in sizing, shape and location of apertures. Options range from small multiple apertures per grate to large SAG/AG mill applications with integrated reinforcement for structural integrity with open pebble ports for maximum open area. Vulco® mill …
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 load.
effect of grate discharge area of sag mill performance Optimization of mill performance by using - SAIMM - effect of grate discharge area of sag mill performance,Optimization of mill performance by using online ball and pulp measurements Soon after a stop, a mill is a dangerous place to enter for the personnel tasked with Overflow VS Grate .
Metallurgical ContentTypes of Ball Mills Ball Mill GrindingExample of Plant Capacity GainsBall Mill SpecificationsCompare Type of Mill DischargeGrate Discharge Ball Mill CapacitiesGrate Discharge Ball Mill Arrangement & Dimensions Allow me to compare: Ball mills can be of the overflow or of the grate discharge type. Overflow discharge mills are used when a product with high specific surface is ...
Tega Pulp Discharger System. TEGA Pulp Dischargers & Upper Discharge Cone have been designed to be used in AG, SAG, Grate Discharge Ball Mill, etc. Our TEGA Discharger system can be installed in the mill irrespective of any existing liners. Our Discharge system is tested for fitment through TEGA FITSYM. Application Area :
The same underlying model is used for SAG and ball milling, with minor differences for the way the charge density is calculated and whether the mill is a grate discharge (most of the SAG mills) or overflow discharge (typically a ball mill). Within the classification, there are also two versions of the Morrell C-model: