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1 x FLS SAG Mill (excl. Motor/Drive) For Sale/Re-Assignment Mill Details Type of Mill FLS SAG Mill Mill Dimensions 12,192 x 7,620 mm (40'x25') (Diam x L) Default Mill Speed 9.31 RPM Mill Speed 7.35-9.90 RPM Liners Metal/Rubber – Excluded Mill Drive Motor Type Wrap Around GMD Mill Drive Motor Size 26,000 kW (34,866 hp)
Jan 08, 2016· In this training module, we'll cover the workings of a semi-autogenous grinding mill, or SAG mill, that's designed to be the first stage of a grinding circuit. Ore that's crushed in a primary ...
Difference Between Sag Mill vs Ball Mill - mech4study. The SAG mills are generally used in pre-processing of any type of material in grinding process. SAG mills are also known as first stage grinders. These heavy output SAG mills are usually powered by electricity. As requirements and needs in grinding field are enhanced.
There is a type of plant where the constant throughput SAG mill is sensible. If the SAG mill is not intended to be the rate-limiting step in a process plant, then it is best to adjust the SAG load (and power) to hold a constant tonnage to satisfy another constraint elsewhere.
The SAG mills have been mostly used for milling hard gold and copper ores with quartz, ultramafic or green stone as host rocks. The Bond work index of these ores ranges between 12 and 14 kWh/t. Subsequently, SAG mill application has been extended to softer ores, such as bauxite and clayey hard-capped gold ores.
A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as .
SAG mills. And over the past three years the company has received ten orders for this type of mill, rated at up to 28 MW. In 2010, Siemens proudly announced the sales re-lease of a 42-foot gearless drive. The 42-foot drive al-lows throughput to be nearly doubled compared to the 38-foot mills commonly used in the mining in-dustry.
mills in the older plants that had many mills in parallel. In fact this is generally still the case in the multi-stream plants, where mill liner design and selection is only tackled on a cost consumables basis. However, the gains to be had through good liner design and selection are just as great as on the large SAG mills.
wire mills, the rolling speeds are so high in many cases that it is no longer possible to use axial tapered roller bearings and axial spherical roller bearings. The axial bearings used in these cases are angular contact ball bearings or deep groove ball bearings. In back-up rolls for large four-high strip mills and foil mills.
Chain Drive Advantages. Chain drives, unlike belt drives, do not slip or creep. There is no power loss due to slippage; therefore, chain drives are more efficient than belt drives. Chain drives are more compact than belt drives. A chain drive, for a given capacity, is narrower than a belt, and the sprockets are smaller in diameter than the belt ...
Driving value - Sophisticated ring-geared mill drives from ABB - ABB Review article (English - pdf - Article) Mount Milligan mill drives - Sophisticated grinding technology and services at work (English - pdf - Article) Bigger is better - ABB drive systems designed to power mega mills in mining (English - pdf - .
to run the motor and the SAG mill at the required speed. We no longer have to deal with plant shutdowns and are able to expand the milling facility, increasing the output from originally 2,000 tpd to almost 8,000 tpd. The ACS 1000 fully meets our expectations." ACS 1000 key data Inverter type Three-level Voltage Source Inverter (VSI)
Motors & Drives; Ring gear drives huge grinding mill. By this summer, a grinding mill that is bigger around than a Boeing 747 will turn chunks of copper ore into gravel-sized bits for smelting and ...
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 taking measurements or
Common types of grinding mills include Ball Mills and Rod Mills. This includes all rotating mills with heavy grinding media loads. This article focuses on ball and rod mills excluding SAG and AG mills. Although their concepts are very similar, they are not discussed here. Photographs of a glass ended laboratory ball mill show action of ball mass within the mill. The action of other grinding ...
SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.
Girth Gears — More than Just Metal and Teeth Steve Lovell Introduction The clear majority of published knowl-edge about gear manufacturing relates to two main subjects; material quality and tooth accuracy. In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, pre-paring a gear blank normally consists of
Apr 09, 2015· Grinding Mills and Their Types. satyendra; April 9, 2015; 0 Comments ; autogenous grinding, ball mill, grinding mills, hammer mill, rod mill, roller mill, SAG,; Grinding Mills and Their Types In various fields of the process industry, reduction .
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 ability to mill a broad range of ore types in ...
Oct 12, 2017· SAG is the abbreviated form for Semi-Autogenous Grinding Mill. This type of Mill is used for grinding large fragments into small pieces. Pieces are then used for further processing. The SAG mills are generally used in pre-processing of any type of material in grinding process. SAG mills are also known as first stage grinders.
• Mill type: SAG, FAG, Rod mill, primary ball mill, secondary ball mill, regrind, .) • Ore feed size (F80,F100) and required product size (P80) determining the grinding mechanism to be favoured • Mill size (diameter, length) • Maximum ball top-up size • Mill rotational speed .
exhibits many of these aspects. Maintaining the SAG mill weight at the optimum value is critical for achieving maximum grind rate efficiency and mill production (Powell, M.S., van der Westhuizen, A.P., & Mainza, A.N. 2009). However, SAG mill weight is difficult to control as the dynamic response changes as the mill approaches maximum capacity.
With in 2%Cr and 0.4%Mo alloy steel casting alloy, it have the good toughness and wearing resistance after heat treatment. With low cost advantage, this alloy wide use for the AG mill, SAG mill and BALL mill.
1 IMPROVEMENTS IN SAG MILL THROUGHPUT FROM FINER FEED SIZE AT THE NEWMONT AHAFO OPERATION *Adrian Dance1, Sonny Mwansa2, Walter Valery 2, George Amonoo3 and Bryon Bisiaux3 1SRK Consulting (Canada) Inc 22nd Floor, 1066 West .