0086-21-58386256
BRITISH COLUMBIA – Thompson Creek Metals of Denver said that mill throughput averaged 52,457 t/d during November at the Mount Milligan copper-gold project 145 km northwest of Prince George. That is a significant increase from the 44,077 t/d average during Q3 2015. The upturn comes thanks to the installation of a second SAG discharge screen deck in late October.
Read More
For the mining industry, our semi-autogenous (SAG) grinding mill uses a minimal ball charge in the range of 6-15 percent. It is primarily used in the gold, copper and platinum industries as well as in the lead, zinc, silver, and nickel industries. Autogenous (AG) grinding mills involve no grinding media as the ore itself acts as the grinding media.
Read More
AG mills (or SAG mills with low ball charges) are often used in single-stage grinding applications. Based on their higher throughput and coarser grind relative to AG mills, it is more common for SAG mills to he used as the primary stage of grinding, followed by a second stage of milling.
Read More
In 2007, the first modernization phase commenced. The initial phase included the construction of a 34 foot semi-autogenous grinding (SAG) mill, conversion of rod mills to ball mills and the complete replacement of the flotation recovery system with 160m3 float …
Read More
Trans. Nonferrous Met. Soc. China 31(2021) 792âˆ'806 Interaction effects of flotation reagents for SAG mill reject of copper sulphide ore using response surface methodology Ali AHMADI, Mojtaba REZAEI, Seyed Mohammad SADEGHIEH Department of Mining Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran Received 25 March 2020; accepted 15 January …
Read More
25 to 40 t/h for copper porphyry SAG & Ball Mill duty In Single Stage SAG duty, the approximate capacity reduces to only 8 to 13 TPH for gold ore duty. The autogenous mill itself is a coarse-grinding device, consisting of tumbling drum with a 25% to 40% volume filling of ore. Metallic or manufactured grinding media is not used.
Read More
Conga: The world's first 42-foot diameter 28 MW gearless SAG mill (English - pdf - Technical publication) Copper Mountain: Overview on the grinding mills and their dual pinion mill drives (English - pdf - Technical publication) Insurability of large gearless mill drives (English - pdf - Technical publication)
Read More
Ore is crushed in-pit, in three semi-mobile gyratory crushers. Overland conveyors feed two secondary crushers, and two mill trains each consisting of a 40 foot diameter 28 megawatt SAG mill twinned with a 44 foot length 22 megawatt Ball mill. The grinding mills are amongst the largest of their type currently operating in the world.
Read More
Konkola Copper Mines plc. Jul 2012 - Jul 20131 year 1 month. Konkola Concentrator Chililabombwe. Areas of responsibility :water reticulation,ore conveyance & stock pile (material handling),milling (SAG & Ball Mills),flotation,backfill,nonel trap unit,high rate & conventional thickeners,concentrate filter (dewatering),concentrate shed and ...
Read More
The Collahuasi district is located in Northern Chile, Tarapacá Region, and hosts large Copper-Molybdenum porphyry-type deposits: Ujina, Rosario a high sulphidation vein deposit as Rosario Oeste and a oxide copper deposit as Rosario Sur. Mineralisation at Rosario and Ujina is mainly associated with veins, especially in Rosario.
Read More
Replacement of the SAG mill motor is progressing well and is expected to be completed in November 2021." On the Lihir mine: "Gold production of 141,000 ounces was 19% lower than the prior period due to lower mill throughput, grade and recovery.
Read More
an existing screen in a Sag Mill copper installation with a General Kinematics STM-SCREEN™. The SAG discharge screen experienced surges of material (25%-40% solids) from the SAG mill, which overloaded their existing screen. During these frequent overload surges, the stroke/throw reduced significantly. This caused a substantial reduction in screen
Read More
The plant processed 3.9 million tonnes of ore during Q3 2021, equivalent to a throughput rate of nearly 16 Mtpa, which included a planned SAG mill maintenance shutdown in the period. Recoveries of 87.29% were better than budgeted and helped to offset the impact of the mill shutdown and lower grades, resulting in only a modest decrease in copper ...
Read More
The Sentinel deposit is a sediment-hosted stratiform copper deposit. Mineralisation is predominantly primary sulphide copper, with sheet-like horizons of ore dipping north at 20-30o . The mineralisation is parallel to dominant foliation, within the structurally deformed carbonaceous phyllite host. ... Each SAG mill has a dedicated cyclone ...
Read More
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.
Read More
Copper Mountain first feed to the SAG mill occurred in late May, 2011. The circuit began ramp up in mid-June of that year, with more consistent operating run times on the SAG and Ball mills. Plant throughput in the first months was quite variable with throughput tonnage …
Read More
SAG mill optimisation and increasing throughput at the Phu Kham Copper-Gold Operation - a success story The Phu Kham Copper-Gold Operation (Phu Kham) is located in northern Laos, approximately 140 kilometres from the capital, Vientiane.
Read More
The concentrator has a milling rate of 70,000t/d and is the largest single-circuit SAG-milling operation in the world. The SAG mill provides feed for ball milling to produce flotation feed, with the ball mills featuring variable-speed drives to enable the mills to handle the range of different ore hardness found at Antamina.
Read More
According to the report, Copper Mountain ore is both very competent and hard. A secondary crusher installed in 2014 allowed reduction of SAG feed size from 150 mm to 24 mm, thus enabling a significant shift in the milling circuit unit energy demand.
Read More
SAG mill is usually used to grind large pieces into small pieces, especially for the pre-processing of grinding circuits, thus also known as primary stage grinding machine. Based on the high throughput and coarse grind, AG mills produce coarse grinds …
Read More
An aerial view of the Grasberg copper and gold mine in Papua, Indonesia (Photo: Business Wire) FPJO will construct a third semi-autogenous grinding (SAG) mill adjacent to the existing milling facilities as the mining district continues to ramp up underground production primarily from the Deep Mill Level Zone and Grasberg Block Cave mines ...
Read More
Salt Lake City, Utah Our Kennecott mine is a world-class, integrated copper mining operation located just outside Salt Lake City, Utah, in the United States. Kennecott has been mining and processing minerals from the rich ore body of the Bingham Canyon Mine since 1903, and is even today one of the top producing mines in the world.
Read More
With the additional SAG mill, the milling capacity will be approximately 240,000 tonnes per day. "Fluor has built several expansions at Grasberg as well as other major projects in Indonesia since the 1980s," said Tony Morgan, president of Fluor's Mining & Metals business.
Read More
The high unit capacity SAG mill/ball mill circuit is dominant today and has contributed toward substantial savings in capital and operating costs, which has in turn made many low-grade, high-tonnage operations such as copper and gold ores feasible. Future circuits may see increasing use of high pressure grinding rolls (Rosas et al., 2012).
Read More
This was a great experience encompassing the operation as well as a walk-through of Prominent Hill's SAG mill relining via 360 o photos, something we wouldn't have experienced had the tour been in person. From this, we visited Ausenco's Brisbane office to walk through the Carrapateena 3D model Ausenco designed.
Read More
The Cavex 2 650 hydrocyclone has proven itself in trials in Chile, where testing was conducted in a large copper ore mine which had a SAG mill in a closed circuit with the cyclone cluster.
Read More
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 [17.5 feet]. The mill is driven by two 8,500 horsepower ABB motors. Figure 2 - The 34' x 20' SAG mill 4
Read More
1992 – 2004; Direct supervision of all field operations and hourly employees pertaining to a 31500 tpd sag mill copper concentrator. Provided direction and support for field and control room operations, two primary crushing plants and a railcar load out facility.
Read More