The first option should be AGM...which can be done with primary crushing followed by AGM as practiced in Kudremukh. For SAG, may be two stages crushing followed by SAG …Web

Methods to Estimate AG/SAG Mill Grinding Power Requirements. (1) Using the results of SMC data. (2) Using SAG Power Index (SPI) data. (3) Using the 1989 …Web

Methods to Estimate AG/SAG Mill Grinding Power Requirements. (1) Using the results of SMC data. (2) Using SAG Power Index (SPI) data. (3) Using the 1989 Barratt method updated on Alex Doll's Web site (February 16, 2015) (3) Using Don Burgess' method (11th Mill Operators Conference 2012) They seem to give very different predictions for ...Web

A schematic of the SAG circuit is shown in Figure 4. Crushed ore and water are fed to the SAG mill. Fine SAG mill product leaves the mill through a trommel screen and enters a sump before being pumped to a reverse configuration ball milling circuit. Pebbles, consisting of the mid-size fraction material building up, exit the mill through pebble ...Web

The SAG mill is fitted with a 20 MW gearless drive motor with bi-directional rotational capacity.AG/SAG mill and crusher circuit simulations through the use of JKSimMet. Independent of this it can be used in power-based calculations Chile ABSTRACT Comminution circuit design and geometallurgy is normally performed using the power …Web

Here is a list of the SAG Mill Manufacturers & Suppliers I know: FL; ; Outotec; CITIC-Heavy Industries Co. Ltd; Thyssenkrupp – Polysius; Farnell …Web

For the AG/SAG circuit, Ausenco initially estimates a so-called base case circuit specific energy using a correlation with the SMC Test parameter, DW i, that was developed using operating plant ...Web

A key operation of any milling circuit is grinding. Over the last two decades, large diameter semiautogenous grind-ing (SAG) mills have become the pre-ferred primary grinding mills. The drive systems became more complex as the size of the mills became larger, during which time operating and design expe-rience for SAG mill accumulated. Con-Web

Media wear is much less than an SAG circuit in terms of total volume (balls and liners) or as unit consumption in terms of kg/kWh or kg/t. However, although the volume is less, the wear materials are much more highly finished—in economic terms, a high-volume. lower value media is replaced by a low-volume. higher value media.Web

COMPARISON OF HPGR - BALL MILL AND HPGR - STIRRED MILL CIRCUITS TO THE EXISTING AG/SAG MILL - BALL MILL CIRCUITS by Chengtie Wang B.Eng., University of Science and Technology BeijWeb

On the most subtle level, the dynamic sag circuit can make a drive pedal sound like Neil Young's "exploding small amp" from Weld, and on the most extreme level, the pedal will struggle and strive to illicit a sound. For reference, the demo at the bottom of this page is set to about 75% of the dynamic sag's full capabilities.Web

Tests SAG-1, SAG-2, SAG-8, and SAG-9 show the influence of fresh feed size distribution on circuit performance. In this case, a coarser distribution as per Sossego (P 80 = 123 mm) resulted in greater specific energy consumption (8.6 kWh/t) compared to the Cristalino size distribution (P 80 = 112 mm), the latter indicating 7.8 kWh/t.Web

This research is focused on the Phase I SABC milling circuit of the Wushan porphyry copper mine. Improvements to the existing circuit were targeted without any significant alterations to existing equipment or the SABC circuit. JKSimMet simulations were used to test various operating and design conditions to improve the comminution …Web

The invention relates to a sag observation method for power transmission line engineering construction. A mechanical model of sag control by a tension force in a tension state is established and applied forces on overhead lines of all towers are calculated based on formulas; and according to to-be-tightened-up zone, an observation grade is …Web

with a classifying screen, K 2 = 1.19 for crushers operating in open circuit (e.g., pebble crusher in an AG/SAG circuit), M ic. is the crushing ore work index provided directly by the SMC T est ...Web

COMPARISON OF HPGR - BALL MILL AND HPGR - STIRRED MILL CIRCUITS TO THE EXISTING AG/SAG MILL - BALL MILL CIRCUITS by Chengtie Wang B.Eng., University of Science and Technology Beijing, 2009Web

An Analysis on SAG Pre-Crush Circuits Kelvin Lee Meadowbank SAG Mill Throughput Ramp-Up Pathies NawejMuteb Session 16: SAG Pre-Crushing Increasing SAG Mill Capacity at the Copper Mountain Mine through the Addition of a Pre-Crushing Circuit Mike Westendorf Improved SAG Mill Circuit Performance due to Partial Crushing of the …Web

As a Projects Metallurgist, I design and execute metallurgical projects that enhance the efficiency and productivity of the processing plant. I have successfully completed several projects, such as the installation and commissioning of an 85tph SAG milling circuit and commissioning of a 25m diameter high-rate thickener. I also manage research and …Web

By combining with SAG discharge and screening on the SAG discharge screens, top-size control to the ball-mill circuit feed is maintained while still unloading the SAG circuit (Mosher et al, 2006). A variant of this method is to direct pebble-crushing circuit product to the ball-mill sump for secondary milling; while convenient, this has the ...Web

An additional barrier is that existing SAG circuits will not be scrapped to make way for a new process. It is proposed that there is considerable potential to make use of the complementary strengths of both comminution devices by adding the HPGR to current circuit expansions, and possibly incorporating a SAG/HPGR duo into new circuit design.Web

SAB circuit •Primary SAG (or AG) followed by ball mill This is the most basic type of SAG or AG circuit where the primary crushed ore enters the SAG or AG mill, gets ground to a …Web

Sag and compression are often times synonymous terms. When a tube amplifier is cranked up hot and loud, the tubes will naturally start to compress, or sag while being pushed. ... (Big overwound or hot humbuckers for instance) the harder you will drive the circuit of your pedal. Just like a regular tube amp, when the pedal's signal is pushed ...Web

7.0 m length (190) single SAG mill equipped with a 20 MW electric motor. The SAG mill product flows to two 3.6 m (120) by 7.3 m (240) horizontal screens, whose combined oversize (pebbles) is diverted to two MP 800 cone crushers. The crushed product returns to the SAG mill feed, closing the primary grinding circuit. The horizontal …Web

replace SAG circuits in hard-rock mining. • Presents a structured methodology for comparison of the energy requirements for HPGR versus SAG complete circuits. The process is based on industrial best practices and advanced modelling tools, and is demonstrated through the evaluation of two hypothetical mining projects (based on real …Web

SAG Mill Components. Once the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell and head stresses and trunnion bearing sizes …Web

The salient feature from evaluating HPGR circuits over SAG-based circuits in terms of reduced environmental impact (or reduced carbon footprint) showed that up to 26 - 39 per cent less total ...Web

The main drawback of SAG - high power consumption. To reduce power consumption, I think: The right determine of SAG feed size. This depends on the mill diameter and the …Web

Table 8 shows the summary of open-circuit SAG milling tests for JAN ore with 0%, 4% and 16% ball charge. It shows the increase, although modest, of mill throughput with ball load. It also shows that operation with the 4% ball load led to the most energy-efficient operation, as evidenced by the lower SSE and fSAG values, thus demonstrating …Web

coarser sizes. This means a closed circuit single stage AG/ SAG mill can operate at a reasonable ef ciency if the fi nal fi product is in the 75 μm range. Burgess (1991) stated that the AG/SAG ineffi ciency factors to be applied to Macpherson test results were 1.10/1.25 for closed circuit grinding and 1.40 for 1.Web