Today, autogenous grinding (AG) mills as large as 40ft in diameter with motor power in excess of 20 MW are being ordered and installed as producers look for higher production and economy of scale in their process plants. Semiautogenous grinding (SAG) mills up to 44ft diameter with 35MW gearless mill drives (GMDs) are available.
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 mm [ feet]. The mill is driven by two 8,500 horsepower ABB motors.
The SAG mill is 26' diameter x 12'3" EGL and powered by 4,500 HP motor driven by a variable speed LCI drive that can control the mill speed from 36% to 80% of critical speed depending on ore type and operational demands.
Oct 05, 2010· The 42ft diameter SAG mill is the world's largest and the first of its kind. The Conga project is at its feasibility stage, and with the engineering and release for fabrication of these mills, Newmont seeks to maintain the option of proceeding with .
In a single stage SAG mill, there are two regimes of breakage that must be controlled in order to maximise power efficiency and hence capacity. These are the high energy coarse rock breakage, load control and low energy breakage to control circulating load and to meet the target product size.
SAG Mill Outotec () m diameter (13') x (') long x 1125 kW
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 MW installed power, and is based on over 100 years of experience with grinding technologies.
The power draw model for a SAG mill cylinder of the following form: Where: P is the power evolved at the mill shell, kW; K and A are empirical fitting factors (use and, respectively) D is the mill effective diameter (inside the effective liner thickness), m; L is the mill effective grinding length (also referred to as the 'belly length), m
Mill diameter [m] 1 0 2 3 4 MH Rod mill MH Ball mill MH SAG mill 500 1000 1500 2000 2500 3000 Maximum installed power [kW] All loadbearing structures in our MH Series mills are designed according to Outotec design standards to ensure safe and reliable operation. In .
historically, MinetoMill has – focussed on blasting alone – generation of more fines • pass through SAG mill onto ball mill circuits • higher throughput ( 10% to 30%) • coarser grind size (possibly) fine <25mm medium 25 75mm coarse >75mm
Oct 08, 2017· Mill discharge pumps MD500 SAG mill system animation Duration: 1:41. World 4,170 views
Predicting the specific energy of autogenous and semiautogenous mills from small diameter drill core samples Article in Minerals Engineering 17(3):447451 · March 2004 with 278 Reads
Effect of core diameter on the Bond impact crushing work index test The Bond low energy impact (crushing) work index test is specified to be performed on rock specimens between 50 mm and 75 mm in effective diameter.
MARCY 13'6in Diameter x 4' EGL ( x EGL) SAG Mill, S/N 1967P88. Shell F/F Length () ( ft) Unit was set up for dry grinding at plant; PREVIOUSLY ran on 300 Hp drive motor, 575 Volt (NOT included). Mill is in excellent condition; disassembled with assistance from Svedala Personnal and matchmarked for reassembly.
A SAG mill is characterized by its large diameter and short length. It rotates, tumbling its contents violently, causing a breaking action. The mill is lined with wear resistant steel liners which are fitted with lifters to assist with raising the load. The liners are replaced as .
SAG mill, 40 ft, 42 ft, gearless mill drive, GMD, SAG manufacture, reliability THE PROJECT The Conga Project is located in Peru adjacent to Newmont's existing Yanacocha operations.