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autogenous grinding patents

US3404846A Autogenous grinding mill Google

A. R. M PHERSON ETAL AUTOGENOUS GRINDING MILL 8 Sheets-Sheet 8 park) a? (10/0 United States Patent 3,404,846 AUTOGENOUS GRINDING MILL

US3078050A Autogenous grinding process and mill

- Google Patents US3078050A Autogenous grinding process and mill systems to perform the same

US3078049A Mill and process for autogenous

US3078049A Mill and process for autogenous grinding of friable material Google Patents

CA1316890C Method and apparatus for autogenous

ABSTRACT In autogenous grinding of mineral material in a grinding mill with a screening wall a method is provided for enabling the removal of at least three different fractions without the need of...

Autogenous grinding method Boliden Aktiebolag

The autogenous grinding technique has found wide use and is widely utilized the world over. Application of the autogenous grinding technique enables the extent to which the material is primarily crushed to be limited to a maximum lump size acceptable from the aspect of transportation.

autogenous grinding miningautogenous grinding

US3404846A Autogenous grinding mill Google Patents. Autogenous grinding is defined as a system of grinding in which run of mine or coarsely crushed rock is fed directly to the mill which discharges a finished ground sand or slime product. More

US Patent for Method and apparatus Justia

1999-1-11  It is preferred that comminution and separation be performed simultaneously by means of combining mechanical or autogenous grinding and size classification of the comminuted particles in a stream of air or a gas in a single operation. It is most preferred that such simultaneous comminution and classification involves autogenous grinding of the ash.

Plural Successive Comminuting Operations Patents

Autogenous grinding method. Patent number: 4681268. Abstract: The present invention relates to a method for comminuting a coarse lump mineral material in an autogenous grinding system, in which feed to the grinder is divided into a coarse fraction and a fine fraction.

Luis Oritz Cerda Inventions, Patents and Patent

Abstract: A nut cold cutter devise is used in the assembly and maintenance of semi-autogenous grinding mills for large-scale mining. The device includes a front body, a back body and a hydraulic cylindrical chamber located between the front and back bodies. The front body has a defined cavity in which there is a movable cutting tool and a fixed cutting tool.

process grinding patents

A process for monitoring the correct setting of the coolant nozzle 9 of a grinding machine for grinding the tooth flanks of workpieces with premachined teeth.In an automatic test cycle after setting the machine, with the grinding wheel 2 at defined positions relative to the workpiece 3, the alterations in power consumption of the grinding spindle drive when switching on the coolant

Autogenous grinding method Boliden Aktiebolag

The autogenous grinding technique has found wide use and is widely utilized the world over. Application of the autogenous grinding technique enables the extent to which the material is primarily crushed to be limited to a maximum lump size acceptable from the aspect of transportation.

Autogenous attrition grinding The Standard Oil

A method for grinding silicon carbide to a submicron powder which comprises grinding a silicon carbide feed material having an average particle size of between 1 and 200 microns in a liquid slurry in a contamination free high energy autogenous attrition mill in the presence of silicon carbide media for a sufficient time to obtain a specific surface area of at least 5 m 2 /g and preferably at

Inert autogenous attrition grinding The

A method for grinding an oxygen sensitive ceramic material to a powder which comprises grinding an oxygen sensitive ceramic feed material having an average particle size of between 1 and 200 microns in a contamination free high energy autogenous attrition mill in non-oxidizing fluid in the presence of media for a sufficient time to obtain a specific surface area of at least 5 m 2 /g and

Autogenous Grinding Mining Fundamentals

2019-2-18  Autogenous Grinding Mining Fundamentals. Autogenous grinding is a process of grinding ore in a rotating cylinder, using large pieces of the same ore. Autogenous mills operate mechanically like ball mills; however, the media used for grinding differs. Simply put, in autogenous grinding, the media is also the material that is being ground

AG Autogenous Grinding 911 Metallurgist

2015-8-6  Autogenous grinding tests were run in a 10-ft x 4-ft Rockcyl mill. The principle of prepared feed and media was utilized to determine how coarse a feed could be commercially fed to a rock mill. Secondary rock milling was expanded toward the

Robot system and method for ball loading for loading

I claim: 1. A robot system for ball loading into semi-autogenous grinding and/or ball mills in ore concentration processes comprising an anthropomorphous robotic arm of at least 5 degrees of freedom, a control, communication and programming unit, a gripper adapter, a pneumatic gripper with fingers, a pneumatic gripper driving system, and an electric supply system and a slide-type ball loading

Semi Autogenous Grinding Mill an overview

An autogenous mill of ID 6.7 m and an effective grinding length of 2.1 m was fed with ore of SG 3.8 to 20% of its volume. The mill was operated continuously 24 hours per day at 1200 t per day and 75% of the critical speed. The solids in the mill charge were at 80% solids. Estimate: 1.

Semi-Autogenous Wet Grinding Modeling with CFD-DEM

2021-5-1  The object of the study is a semi-autogenous grinding mill SAG 34x17 (the diameter of the mill is 34 feet, the length is 17 feet), which processes charges of copper nickel ores. The ores that make up the charge are divided into 3 conventional types.

Testing method for ball mills Outokumpu

The invention claimed is: 1. A testing method for designing a semiautogenous or an autogenous grinding circuit having at least one ball mill for grinding ore, the method comprising: measuring an amount of time for grinding a predetermined mass of ore to a first predetermined size, in a first, semiautogenous step; calculating a required grinding energy based on the measured time for grinding in

US Patent for Attrition mill Justia Patents Search

2009-12-17  An attrition mill that includes a grinding chamber having a plurality of grinding elements and an internal classification and separation stage. The mill also includes at least one grinding element providing a larger flow path therethrough, when compared to other of the grinding elements. In other embodiments, mill includes at least one grinding element having an open area in the grinding

Autogenous grinding method Boliden Aktiebolag

The autogenous grinding technique has found wide use and is widely utilized the world over. Application of the autogenous grinding technique enables the extent to which the material is primarily crushed to be limited to a maximum lump size acceptable from the aspect of transportation.

Inert autogenous attrition grinding The

A method for grinding an oxygen sensitive ceramic material to a powder which comprises grinding an oxygen sensitive ceramic feed material having an average particle size of between 1 and 200 microns in a contamination free high energy autogenous attrition mill in non-oxidizing fluid in the presence of media for a sufficient time to obtain a specific surface area of at least 5 m 2 /g and

process grinding patents

A process for monitoring the correct setting of the coolant nozzle 9 of a grinding machine for grinding the tooth flanks of workpieces with premachined teeth.In an automatic test cycle after setting the machine, with the grinding wheel 2 at defined positions relative to the workpiece 3, the alterations in power consumption of the grinding spindle drive when switching on the coolant

System to control a charge volume of an autogenous

The term “semi-autogenous grinding mill” or SAG mill as used herein can refer to an essentially autogenous mill, but utilize grinding balls to aid in grinding like in a ball mill inside a rotatable mill liner. A SAG mill is generally used as a primary or first stage grinding solution. SAG mills can use a ball charge of 8 percent to 21 percent.

Testing method for ball mills Outokumpu

The invention claimed is: 1. A testing method for designing a semiautogenous or an autogenous grinding circuit having at least one ball mill for grinding ore, the method comprising: measuring an amount of time for grinding a predetermined mass of ore to a first predetermined size, in a first, semiautogenous step; calculating a required grinding energy based on the measured time for grinding in

run of mine grinding mill AtaFinch

US3404846A Autogenous grinding mill Google Patents. An autogenous grinding mill may receive a coarse run of mine rock feed and discharge it as a finished ground sand or slime product. In order to efliciently break down the rock the mill must provide...

Patents Assigned to Boliden Aktiebolag Justia

Patents Assigned to Boliden Aktiebolag Method for extracting and recovering iron and nickel in metallic form. Patent number: 4060464 Abstract: A method of extracting iron and nickel from sulphidic iron-nickel-materials and recover them in metallic form. The method comprises leaching the material with an acidic solution in presence of an

grinding mill screeing grinding solution mongolia

May 15 2014 · 119 SEMI AUTOGENOUS GRINDING MILLSAG SAG mills utilize grinding balls to aid in grinding like in a ball mill. It is generally used as a primary or first stage grinding solution. SAG mills use a ball charge of 8 to 21 . Attrition between grinding balls and ore particles causes grinding of

Johnny T. Kalala Senior Process Consultant DRA

Fifth international conference: Autogenous and semiautogenous grinding Technology September 25, 2011 Other authors. A simplifified approach to modelling Semi-autogenous grinding Patents

broyeur SAG en anglais Français-Anglais dictionnaire

semi-autogenous grinding mill @Termium. semi-autogenous mill @Termium. Double coating for sag mills. patents-wipo. Dans une variante préférée, le procédé permet de réguler un système de broyeur qui comprend respectivement un broyeur à barres, A multiplicity of mill liner elements are positionable in a grinding mill shell,

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