SAG mill. Trommel undersize is pumped from the mill sump to the cyclone cluster for classifiion. The coarse undersize exiting the cyclone is returned to a single 6 MW, secondary ball mill operating in closed circuit. The pulp discharging the ball mill is combined in a common (to the SAG mill) discharge sump.
BENEFITS OF MCU IN A SAG MILL. Optimisation of a new mill. During the first year or more of operation it is often necessary to perform a ball charge level check weekly. This involves locking out the system, pulling the feed chute and then reversing that process, a cycle which can take three to five hours. The MillWatch Camera Unit (MCU ...
01/06/2001 · SAG mill discharge is screened with the oversize recycling via a gyratory cone crusher, while the undersize is diluted with water and fed to the primary cyclones for classifiion. ... (31) and Eq (23); and O are the model parameters as given in Table 1. The appliion of a constrained nonlinear optimisation technique' a gradientbased ...
III11 III12 GENERAL SAG MILL CIRCUIT . III11 SAG MILL CIRCUIT OPTIMISATION AT ERNEST HENRY MINING S. Strohmayr 1, W. Valery 2 Jr. 1Ernest Henry Concentrator Operations Superintendent. Inquire Now; optimising a sag mill Optimization of the single stage SAG mill circuit single stage SAG mill at Minera Yanacocha's Gold Mill ...
The 40OPTIMISATION OF THE foot diameter SAG mill was designed to treat 2065tph of monzonite ore CADIA HILL SAG MILL CIRCUIT at a ball charge of 8% volume, total charge of 25% volume and an operating mill speed of 74% of critical.
optimising benefits of a fixed "security" camera, we designed a MCU which provides a live video feed from inside a running or stationary SAG mill. The first successful installation of a MCU, completed at the Canadian Malartic mine in Quebec, Canada, in 2014, marks the beginning of a new level of insight, information, and safety inside SAG mills.
01/06/2021 · SAG mill optimisation using powerbased simulations. Author Dr. Rajiv Chandramohan Robert Braun Greg Lane. Redefining what s possible and delivering valueadding consulting studies project delivery and asset operations and maintenance solutions to the Minerals Metals Oil Gas and Industrial sectors globally.
SAG Mill Circuits The use of modelling and simulation has become routine in the design and optimisation of AG and SAG mill circuits. One of the most widely used models for this purpose is the socalled "variable rates" model (Morrell and Morrison, 1996). A more uptodate version has also been developed with enhanced predictive
Installing a 1000kW regrind ball mill increased plant capacity by 56% through treating 29% of the cyclone underflow and reduced the SAG mill specific energy from to 16 kWh/t and the investment has a payback period of 1 year and a month, in 10 years the project would have earned the company more than 15 million dollars of profit.
Firstly, there was a serious flaw in the power configuration of the SAG mill and ball mill (both rated at 6000 kW with a single pinion drive). The capacity of the SAG mill was not fully utilized, as the actual operating power draw was only 3358 kW. This meant it was only operating at 56% of its maximum power, providing large room for improvement.
damage to liners. Focus was therefore placed specifically on improving SAG control. The optimisation project had delivered a mill that should have been set up for success. The control system had full DCS functionality and the following additional instrumentation had been added: SAG Control December 27, 2005 100 110 120 130 140 150 160 170 180
Optimisation of maintenance processes, practices and procedures. Crushing and Grinding Mill Maintenance Services. Site wide maintenance Audits, strategy design and execution. SAG, AG and Ball Mill liner design – consult, review and recommend. Fixed and mobile plant maintenance planning and group wide standardisation
SAG mill optimisation Take control of your SAG mill process Reducing downtime through data Downtime is the most inefficient thing of all for a processing plant, costing hundreds of thousands of dollars each hour. Mill loading is key to running the mill more efficiently and at lower expense. If a load is too full, inefficient ore reduction leads ...
Sag Mill Optimization Insights By Measuring Inside The . The paper shows how measurements from inside an operating sag mill are now a paper discusses how the measurements might affect and enhance energy efficient mill efficient comminution is a preoccupation of mineral processing researchers and practitioners.
02/03/2010 · As a result, mines have shifted their emphasis in optimization from ball mills to SAG mills. The rock load in the mill essentially depends on ore characteristics and the discharge rate of broken particles through the discharge end. The discharge rate depends on how efficiently the discharge pump (grate and pulp lifters) operates.
An analysis of production data following the change in 2016 showed 80% SAG mill power utilisation. Comparing pre and post optimisation production datasets, the impact of the changes became apparent.