### US3404846A - Autogenous grinding mill - Google Patents

Another purpose is a mill for autogenous grinding utilizing spaced lifter bars within the mill, the height and spacing of the lifter bars being regulated to obtain maximum grinding efficiency....

Get PriceEmail contact### What's the Difference Between SAG Mill and Ball Mill ...

Both the autogenous grinding mill and the ball mill feed parts are welded with groove and embedded inner wear-resistant lining plate. As the sag mill does not contain grinding medium, the abrasion and impact on the equipment are relatively small.

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SAG mills use larger pieces of ore to break up the smaller pieces (autogenous — does it by itself). The larger pieces break down as well. The larger pieces break down as well. To help the process along, eight-inch-diameter steel balls are added to the rocks as they tumble inside the rotating mill (semi-autogenous — gets some help from the steel balls).

Get PriceEmail contact### (PDF) Design of a typical Autogenous Mill: Part-II

An Autogenous Milling defined as used in this study; the term Autogenous milling means a process in which the size of the constituent pieces of a supply of rock is reduced in a tumbling mill ...

Get PriceEmail contact### (PDF) Design of a typical Autogenous Mill: Part-I

Mill inside liner diameter (3.9 m - 2 x 0.185 m), D =3. 53m ... The special characteristics of the Autogenous mill are stated, and a suitable type of model for the mill is presented.

Get PriceEmail contact### PAI SAG Mill Training - YouTube

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 circui...

Get PriceEmail contact### AG Autogenous Grinding - Mineral Processing Metallurgy

Metallurgical ContentIntermediate Autogenous GrindingAutogenous Grinding ExplainedTest ConditionsGrinding Characteristics of Short Mill Versus Long MillObservations and Recommendations The third type of mill that I mentioned was an AUTOGENOUS MILL, this type of mill uses a completely different type of grinding media; the rock itself In conventional milling, the ore is crushed to, plus or

Get PriceEmail contact### AMIT 135: Lesson 7 Ball Mills Circuits – Mining Mill ...

Autogenous mills range up to 12 meters in diameter. The length-to-diameter ratios in the previous table are for normal applications. For primary grinding, the ratio could vary between 1:1and 1.8:1. For fine regrinding in open circuit, the ratio ranges from 1.3:1 to 1.5:1. Some ball mills are separated in to compartments by grates.

Get PriceEmail contact### US3404846A - Autogenous grinding mill - Google Patents

AUTOGENOUS GRINDING MILL 8 Sheets-Sheet 5 Original Filed Oct. 9. 1962 Oct. 8, 1968 A. R. M PHERSON ETAL 3,404,345 . AUTOGENOUS GR INDING MILL Original Filed Oct. 9, 1962 8 Sheets-Sheet 4 Parker 5 (ii/fer Oct. 8, 1968 A. R. MaCPHERSON ETAL 3, AUTOGENOUS GR INDING MILL Original Filed Oct. 9, 1962 8 Sheets-Sheet 5 IITOPNEYJ'.

Get PriceEmail contact### What's the Difference Between SAG Mill and Ball Mill ...

The end cover of the autogenous mill is made of steel plate and welded into one body; the structure is simple, but the rigidity and strength are low; the liner of the autogenous mill is made of high manganese steel. The end cover and the hollow shaft can be made into an integral or split type according to the actual situation of the project.

Get PriceEmail contact### What is the difference between a SAG mill and ball mill?

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%. [6] [7] The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor. [8] A SAG mill with a 44 ...

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Rod Mills are less common and use steel rods instead of balls, whilst Autogenous mills use no artificial Grinding Media but rely on the action of rock-on-rock. Semi-autogenous mills are favoured in modern practice on large mines, using a mixture of balls and rock-on-rock.

Get PriceEmail contact### (PDF) Flash Milling Inside a Flotation Cell

The steady-state and dynamic behaviour of semi-autogenous grinding (SAG) mills are arguably best described using a population model that caters for the breakage kinetics and the material transport ...

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SAG mills use larger pieces of ore to break up the smaller pieces (autogenous — does it by itself). The larger pieces break down as well. To help the process along, eight-inch-diameter steel balls are added to the rocks as they tumble inside the rotating mill (semi-autogenous —

Get PriceEmail contact### TECHNICAL NOTES 8 GRINDING R. P. King

Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill, or large lumps of ore in an autogenous mill or a mixture in a semi-autogenous mill,

Get PriceEmail contact### Crushed Rock Ball Mill Inside View Crusher Mills, Cone ...

manganese ore crushed inside the mining machine such as stone crusher,ball mill crushed manganese mill view reliable stone processing inner parts of ball mill rod mill for coke crushing

Get PriceEmail contact### Autogenous and Semi-Autogenous Mills - ScienceDirect

Jan 01, 2016 Some dry autogenous mills operating in Canada are 8.5 m in diameter and 1.5 m in length. These are known as Aerofall mills. The Cadia Hill (Australia) wet SAG mill is 12.2 m in diameter with a 20 MW motor and in 2004 was the largest diameter mill in operation in the world.

Get PriceEmail contact### (PDF) Design of a typical Autogenous Mill: Part-II

An Autogenous Milling defined as used in this study; the term Autogenous milling means a process in which the size of the constituent pieces of a supply of rock is reduced in a tumbling mill ...

Get PriceEmail contact### (PDF) Design of a typical Autogenous Mill: Part-I

Mill inside liner diameter (3.9 m - 2 x 0.185 m), D =3. 53m ... The special characteristics of the Autogenous mill are stated, and a suitable type of model for the mill is presented.

Get PriceEmail contact### Autogenous and Semi-Autogenous Mills - ScienceDirect

Jan 01, 2016 Some dry autogenous mills operating in Canada are 8.5 m in diameter and 1.5 m in length. These are known as Aerofall mills. The Cadia Hill (Australia) wet SAG mill is 12.2 m in diameter with a 20 MW motor and in 2004 was the largest diameter mill in operation in the world.

Get PriceEmail contact### AG Autogenous Grinding - Mineral Processing Metallurgy

Metallurgical ContentIntermediate Autogenous GrindingAutogenous Grinding ExplainedTest ConditionsGrinding Characteristics of Short Mill Versus Long MillObservations and Recommendations The third type of mill that I mentioned was an AUTOGENOUS MILL, this type of mill uses a completely different type of grinding media; the rock itself In conventional milling, the ore is crushed to, plus or

Get PriceEmail contact### AMIT 135: Lesson 7 Ball Mills Circuits – Mining Mill ...

Autogenous mills range up to 12 meters in diameter. The length-to-diameter ratios in the previous table are for normal applications. For primary grinding, the ratio could vary between 1:1and 1.8:1. For fine regrinding in open circuit, the ratio ranges from 1.3:1 to 1.5:1. Some ball mills are separated in to compartments by grates.

Get PriceEmail contact### TECHNICAL NOTES 8 GRINDING R. P. King

Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill, or large lumps of ore in an autogenous mill or a mixture in a semi-autogenous mill,

Get PriceEmail contact### (PDF) Flash Milling Inside a Flotation Cell

The steady-state and dynamic behaviour of semi-autogenous grinding (SAG) mills are arguably best described using a population model that caters for the breakage kinetics and the material transport ...

Get PriceEmail contact### The Perfect Pair: Shock Pulse and Vibration Monitoring ...

In autogenous mills, a sufficient amount of bigger parts of ore inside the drum is critical to an effective grinding process. Maintaining particle size while minimizing equipment wear, downtime and power consumption is a challenge to production and maintenance engineers. The Garpenberg Autogenous Mill

Get PriceEmail contact### SAG Mill Liner - Nanjing Manganese Manufacturing Co.;Ltd

Our AG/SAG mill liners are manufactured to the highest industry standard for Autogenous Grinding(AG), Semi-Autogenous Grinding(SAG), Primary / Secondary and re-grind rod or ball mills. MGS Casting mill lining system designed by our highly trained, and dedicated team throughout the world has taken your entire comminution circuit into consideration.

Get PriceEmail contact### Crushed Rock Ball Mill Inside View Crusher Mills, Cone ...

manganese ore crushed inside the mining machine such as stone crusher,ball mill crushed manganese mill view reliable stone processing inner parts of ball mill rod mill for coke crushing

Get PriceEmail contact### Keep your business rolling - Metso Outotec

this product inside-out; we invented it. Application areas • Autogenous mills • Semi-autogenous mills • Ball mills • FGD mills • Rod mills • Scrubbers and washing drums The development of the Poly-Met concept led to the first patent in 1987. Equal height Reduced downtime as a result of fewer stops for maintenance and monitoring of

Get PriceEmail contact### Ball Mill Simulation and Analysis on Vimeo

This video shows the inside of a Semi Autogenous Grinding (SAG) mill, a key machine for grinding crushed materials in mining. Optimize your SAG Mill operation using EDEM tools for analyzing the motion of rocks and balls, power consumption, wear and ball particle distribution through time.

Get PriceEmail contact### Predicting the specific energy of autogenous and semi ...

Mar 01, 2004 1.. IntroductionIt is generally recognised that the most accurate means for predicting the specific energy of an autogenous (AG)/semi-autogenous (SAG) mill circuit is to pilot the circuit using a 6 ′ × 2 ′ mill (Mosher and Bigg, 2001).However, one of the major drawbacks of this approach is that a relatively large sample is required to do so.

Get PriceEmail contact### FREDA REBECCA SAGMILLING CIRCUIT OPTIMIZATION

2.1. AUTOGENOUS (AG) AND SEMI AUTOGENOUS (SAG) MILL OPERATION Semi autogenous grinding is one of the most used processes for comminution. The process involves feeding rock particles and water into the grinding mill containing a fraction of steel balls usually below 10% and running at a fraction of its critical speed.

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