copper sag mill discharge

Updated magnetic separation techniques to improve …

The SAG Mill discharge stream is frequently classified with a screen deck. The screen deck scalps the oversize material, which in turn is routed to the pebble …

Optimizing Performance of SABC Comminution …

Modifications to the SABC comminution circuit included an increase in the SAG mill ball charge from 8% to 10% v / v; an increase in the mill ball charge from 23% v / v to 27% v / v; an increase in the …

IMPROVING ENERGY EFFICIENCY VIA OPTIMIZED CHARGE MOTION …

The product from the SAG mill is further reduced in size using pebble crushers and ball mills. Hence, typical gold or copper ore requires between 2.0 and 7.5 kWh per ton of energy to reduce the particle size. Considering a typical mining operation processes 10,000 to 100,000 tons per day the energy expenditure in grinding is 50 …

Copper Mountain Advances Mill Expansion With …

August 2021 | Processing Solutions. Installation of a General Kinematics STM-SCREEN enables Copper Mountain Mining to eliminate a bottleneck caused by the concentrator's existing SAG mill discharge screen, …

Investigating Sarcheshmeh Copper Complex SAG mill Discharge …

The proportion of SAG and ball mills in producing the final product (particles finer than 74 µm) was 55.38% and 44.62% respectively. That is, the SAG mill produces about 10.76% more than the ball ...

SAG mill Optimisation and increasing throughput at the Phu Kham Copper

Modular SAG mill discharge trommel for maintenance flexibility and performance Watch . Session 3B Discussion - Automation and Control Watch . ... Nova copper-nickel project optimisation of the copper rougher-scavenger circuit through advanced measurement and control Watch .

Mining Engineering Online

Copper Installation The Scenario: ... The existing SAG Mill Discharge screen had a single deck design of 3.6m x 8.5m and handled less than 1,900 TPH when screening at 13mm., which quickly became the process limitation. In an attempt to assist the movement of material off the deck and reduce the frequency of overloads, the customer …

SAG mill pulp-lifter design, discharge and backflow

Conventional straight-radial semiautogenous grinding (SAG) mill pulp lifters suffer from incomplete discharge of the rockportion of the charge. The resulting backflow of undischarged rock limits ...

SM at Kennecott Utah Copper Introduction

CiDRA CYCLONEtracSM at Kennecott Utah Copper Dylan Cirulis (Kennecott Utah Copper), Jerin Russell (CiDRA Minerals Processing) Introduction . Rio Tinto's Kennecott Copperton Concentrator has four grinding lines each consisting of one SAG mill feeding two ball mills in a closed circuit with a hydrocyclone battery (Figure 1). The aim of the ball ...

Modular SAG mill discharge trommel for maintenance …

SAG mill Optimisation and increasing throughput at the Phu Kham Copper-Gold Operation – a success story Watch . Optimising the operation of paste thickening at the Yara Siilinjärvi Plant Watch . Modular SAG mill discharge trommel for maintenance flexibility and performance Watch . Session 3B Discussion - Automation and Control …

Optimizing Performance of SABC Comminution Circuit of …

The discharge grates of the SAG mill were identified as a key component in the SABC circuit, and their design is a crucial factor in the mill's performance [17,18,19,20,21]. The initial design of the grate section caused a serious accumulation of pebbles within the SAG mill which contributed to a decreased grinding efficiency.

AMIT 135: Lesson 2 Circuit Mass Balancing – …

Objectives. Upon completion of this lesson students should be able to: Differentiate between different type metallurgical accounting methods and benefit of metallurgical accounting. Recall the definitions of grade, …

SAG Mill Grinding Circuit Design

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(PDF) Operation Analysis of a SAG Mill under …

Simulation results under the ∅5250 × 500 mm mill model show that the mill operates with the optimal effect when the mill is under the condition of 80% critical speed and 15% fill level; the ...

Recent Grinding Practice in the Copper Concentrator of …

pumpbox of the 09 ball mill and combined with the mill discharge. D26B cyclones were utilised on both cyclopaks with ... REVERSION TO AG-SAG AND TWO BALL MILLS Copper ore production has increased ...

SAG Mill Discharge Scats – Ball Chips

SAG Mill Discharge Scats – Ball Chips (14 replies) S. Standartenfurer. ... but sending ore that has around 1% of copper grade to a metallurgical process that recovers around 35% versus the concentration plants that recovers nearly 80-85% then you would understand my concern to search for a better destiny to the material. I would like to know ...

Paper # 25

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 …

INCREASING SAG MILL CAPACITY AT THE COPPER …

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 ... SAG mill discharge screen opening slot size and initiating the overall expert system into the control

Paper # 25

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

Keys to best practice comminution

This is a matter of equity. 7. Best practice ore hardness measurement requires measuring the SAG hardness to grind the ore from a feed size F 80 of 152 mm to a transfer size T 80 of 1.7 mm, using the most accurate test available, in kWh/t and measuring the Bond Ball Mill Work Index on SAG ground ore.

Deep Dive into Efficiency CASE STUDY: Copper Installation

The existing SAG Mill Discharge screen had a single deck design of 3.6m x 8.5m and handled less than 1,900 TPH when screening at 13mm. This quickly became the process limitation. In an attempt to assist the movement of material off the deck and reduce the frequency of overloads, the customer decided to incline the screen and upgrade the drive.

Minding the Grind: Maintenance Options to Keep SAG Mills …

Modern, large SAG mills are major capital-cost items with price tags reaching well into the eight-figure dollar range. They stand at the entry point to a variety of comminution circuit setups and when they stop for whatever reason, the revenue losses per circuit mount quickly. The hours, days or weeks needed to get a mill back on line are often ...

Grinding Mills | Mineral Processing Equipment | CITIC HIC

For Zijin Mining's Duobaoshan Copper Mine project in Heilongjiang, we have manufactured and provided SAG mills of Ø11×6.4m (2×9000kW) and overflow discharge ball mills of Ø7.9×13.6m (2×9000kW) which have been well operating currently.

Case Study

Project: Copper Mine Location: Kazakhstan. Overview. The comminution flowsheet consists of a primary gyratory crusher feeding an open circuit SAG mill with forward pebble crushing (2x cone crushers followed by a closed circuit HPGR). SAG mill discharge and HPGR product feeds two ball mills in closed circuit with cyclones. The Challenge.

copper sag mill discharge

The power draw estimate is based mostly on the Bond ball mill formula where the feed to the ball mill is the projected SAG mill discharge that has passed through a "phantom cyclone". In the absence of testwork, many values used in the JKSimMet model may be assumed based on other surveyed mines or on default values built into the model.

Copper Mountain Mining Corporation: STM-SCREEN™ Case …

The new SAG Mill discharge screen would need to achieve a sustained capacity of 2,400 mtph, with periodic surges to 2,700 mtph. This increase in capacity …

Maximize Your Mining Screen Efficiency | General Kinematics

Copper Installation- Deep Dive into Efficiency The Scenario: Using the current footprint, the customer wanted to replace 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 …

Semi-autogenous grinding (SAG) mill liner design and …

Semi-autogenous grinding mills (SAG mills) are tumbling mills that most commonly have a shell diameter-to-length ratio of around two. With this high aspect ratio, SAG mills generate both thrown and cascading ball-milling actions with shell linings shaped to lift and to throw alloy steel grinding balls of up to 150 mm (6 in.) in diameter. These

SAG Mill Trommel Screens | Multotec

The SAG mill trommel screen provides a simple mechanism to classify large volumes of mill product. Many designers and mill operators believe that the benefits of simplicity and the ability to handle throughputs in excess of 5 000 tph of solids make trommels the preferred equipment for this application. Multotec has been supplying trommel ...

Schenck Process builds on success of 'Beast' mill discharge …

One of three Beast SAG mill discharge screens at Cobre Panama's processing complex "Despite the challenges of COVID, we are currently doing well as we work towards our 85 Mt/y continuous throughput target. Also, over the last 6-12 months we have scoped some concurrent, complementary projects that should allow us to reach 100 …