The design of mill liners and SAG mill discharge grates will have a large effect on how efficiently the mill operates and the circuit throughput. All models generally assume that a mill is fitted with "efficient" liners and that the grate design neither limits passage of pebbles (and pulp) nor permits re-circulation of pulp back into the mill.

Since the 2014 year, H&G Machinery has had become one of the largest AG/SAG mill liner manufacturers from China. No matter which material you want, manganese steel or Ni-hard steel or Cr-Mo steel or alloy steel; No matter …

H&G Casting had success to use ASTM 2074/L2B alloy steel to manufacture AG/SAG mill liners. Under this material, our mill liners span life can be obviously improved. Our Australia customers had ordered more than 10,000 tons per year of this material mill liners. As a casting foundry, H&G Casting also has own SAG Semi-Autogenous Grinding Mill ...

The material of SAG Mill Liner Design are low C or high C Cr-Mo Alloy steel,which depends on the specific working condition of the SAG mill. The hardness of AS2074 L2B is HB310-HB380. We can make big size SAG mill …

has been selected to design and supply a 42ft x 25ft, (12.8m x 7.6m) 28MW gearless SAG mill, plus two 26ft x 42ft, (7.9m x 12.8m) 15.6MW ball mills and two VTM-1500-WB VERTIMILLS® for Newmont Mining's Yanacocha Conga copper-gold project in Peru. The 42ft diameter SAG mill is the world's largest and the first of its kind. Read More

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 …

In a single stage mill with pebble crushing, smaller grate apertures are typically installed when compared to a SAG mill in SABC configuration. Typically less than 50 mm apertures are used. ... 13 MW SAG mill with recycle crusher was selected for the single stage SAG mill configuration. This design is in line with the selection dictated in Table 2.

of grate/pulp lifter design in AG/SAG mill discharge The current, The classification at the grate for both slurry apertures and pebble ports has substantially. Read more. SAG Mill Liners. Jun 6,, SAG Mill Liners include: feed head & discharge end as well as grates (both outer, middle and inner), pulp lifters (dischargers) shell lifter bars. ...

The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mill's performance [17,18,19,20,21]. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill which contributed to a decreased grinding efficiency.

In a single stage mill with pebble crushing, smaller grate apertures are typically installed when compared to a SAG mill in SABC configuration. Typically less than 50 mm apertures are used. ... 13 MW SAG mill with recycle crusher was selected for the single stage SAG mill configuration. This design is in line with the selection dictated in Table 2.

The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mill's performance [17,18,19,20,21]. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill which contributed to a decreased grinding efficiency.

sag mill grate design. SAG Mill Grinding Circuit Design 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 SAG Mill Grinding Circuit Design ...

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. Generally, the discharge from AG/SAG mills consists of one or both of the following components: slurry (water and finer particles) and pebbles (20-100 mm).

Mill, gear and pinion friction multiplier: 1.025. Mill Power required at pinionshaft = (240 x 16.5 x 1.025) ÷ 0.746 = 5440 Hp. Speed reducer efficiency: 98%. 5440 Hp ÷ 0.98 = 5550 HP (required minimum motor output …

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 …

> Liner design,with the advent of large diameter SAG mills, the issues of design, selection, monitoring and evaluation of mill performance is critical ... Grate Inside A SAG Mill Inner grate plate Shell lifter Charge Lifter Outer grate plate Source: Growth Steel Group Library (2013)

Following a successful commissioning and start-up, we believe that two grinding lines at Las Bambas, Perú, each consisting of one SAG Mill and one Ball Mill (this mill combination is uniquely specific to Las Bambas ore types), are operating at design throughput of close to 140,000 tpd and within the range predicted by DJB from a managed multi-sample …

The model has been assessed using data obtained from milling tests performed on a 2.5-kW pilot mill in which grate design, slurry flowrate and slurry viscosity were varied.

In this case, the SAG mill design can do that. In general, the SAG mill manufacturers will control the addition amount of medium such as steel ball at 2-8%, so that the capacity of semi SAG mill to process materials can be …

If you do not need a deep primary grind, a retrofit/conversion might be of value. A very high impact opportunity to increase your ball mill tonnage. A conversion is cheap in price as you can read in the footer. The cost of a ball …

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

To a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill …

Sag Mill Grates - alanglover.co.za. SAG mill grate design, SAG mill ball charge level, ball mill operating conditions, changes in classification with hydrocyclones, use and operation of recycle/pebble crushers were all considered and evaluated in the simulations. Get Price; PAI SAG Mill Training YouTube.

The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mill's performance [17,18,19,20,21]. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill which contributed to a decreased grinding efficiency.

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 falls into the stationary rock box. A water jet then squirts that oversize back into the mill through the conical discharge tube.

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 / …

Jan 01, 2003 · The mill operates in closed circuit with 0.66 meter horizontal cyclones to produce a ground product of 90 micron nominal size (K80).The AG/SAG mill liners are steel (Norsteel, chrome-moly steel) with rubber grates and rubber lined pulp e original liner design was based on studying other AG/SAG mills and rmendations by the liner ...

The design of mill liners and SAG mill discharge grates will have a large effect on how efficiently the mill operates and the circuit throughput. All models generally assume that a mill is fitted with "efficient" liners and that the grate design neither limits passage of pebbles (and pulp) nor permits re-circulation of pulp back into the mill.

Wills and Napier-Munn (2006) describe the design and operation of SAG mills. SAG mills are currently the technology of choice in hard rock milling operations for reducing primary-crushed ore to ball mill feed. In recent years, the trend has been towards larger-sized SAG mills with diameters of 10.4 m

Yanacocha Gold Single Stage SAG Mill Design, Operation and Optimisation. September 2011; Conference: SAG2011; ... Grate r ev 5 1.66 70 + 28 25x50 / 80x50 0.200 12.05 165 0.6. a) Rubber grate Rev 2 ...

Yanacocha gold single stage sag mill design, operation and optimization. Proceedings SAG 2015, Vancouver, British Columbia, Canada. Paper #127. ... Grate design considerations ...