ore grinding mill patent lookup

US Patent Application for IRON ORE ... - Justia Patents Search

The terms grinding and milling may be used interchangeably. Grinding or milling is designed to break a solid material into smaller pieces. According to preferred embodiments of the present invention the slimes originating from desprm are dry produced by pneumatic classifiers with a cut that may be between about 90%<37 μm and about 90% <5 μm.OPTIMIZATION OF COMMINUTION CIRCUIT THROUGHPUT AND PRODUCT ... Overgrinding was primarily caused by two effects: (1) The hydrocyclones used to close the circuit and remove fully-ground particles from the circuit were preferentially returning high-density ore particles to the secondary mills for regrinding even after they were already ground to pass the desired product size and (2) The primary grinding ...


ONLINE SAG MILL PULSE MEASUREMENT AND OPTIMIZATION (Technical ...

Depending on the mill size the SAG mills draws between 2 MW and 17 MW. 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.Mineral Processing Design and Operations | ScienceDirect To liberate minerals from sparsely distributed and depleting the ore bodies finer grinding than generally obtained by the conventional Rod Mill –Ball Mill grinding circuits is needed. Longer grinding periods in the conventional milling processes prove too expensive mainly due to large power consumption.


Gates Iron Works v. Fraser - Wikisource the free online library

'Letters patent to Charles Tripp granted and dated November 10 1857 No. 18610 for improvement in grinding mill. 'Letters patent to Conrad P. Wagner granted and dated January 30 1866 for improvement in quartz mill No. 52347. 'Letters patent to Thomas Varney granted and dated April 9 1867 No. 63675 for improvement in quartz mill.Grinding Mills - an overview | ScienceDirect Topics The SAG mill was designed to treat 2065 t h −1 of ore at a ball charge of 8% volume total filling of 25% volume and an operating mill speed of 74% of critical. The mill is fitted with 80 mm grates with total grate open area of 7.66 m 2 (Hart et al. 2001).


US3633832A - Apparatus for grinding mineral ... - Google Patents

INVENTOR V GUNNAR R. FAGERHOLT ATTORNEYS PATENTED JAN] 1 4922 3.633832 SHEET 2 OF 2 INVENTOR GUNNAR R.FAGERHOLT AT ORNEYS APPARATUS FOR GRINDING MINERAL MATERIALS BACKGROUND OF THE INVENTION The dry grinding of coarse granular materials such for instance as cement clinker is commonly efiected in tube mills containing grinding bodies. Such a ...WO2014063211A1 - Iron ore concentration process with grinding ... ore desprm grinding Prior art date 2012-10-26 Application number PCT/BR2013/000411 Other languages French (fr) Inventor Joaquim Donizetti DONDA Original Assignee Vale S.A. Priority date (The priority date is an assumption and is not a legal conclusion.


Google Patents

Search and read the full text of patents from around the world with Google Patents and find prior art in our index of non-patent literature.Patents Assigned to Magotteaux ... - Justia Patents Search Justia - Patents - Patents and Patent Application Resources. Abstract: In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide wet grinding of the ore with grinding media made of high chromium cast iron alloy having a chromium content of from 10 to 35% by weight is combined with an addition of hydrogen peroxide to the conditioned ...


HARSHA VARDHAN (P. Eng) | Department of Mining Engineering

Patent application number - TEMP/E-1/53448/2018-MUM – PUBLISHED. 2. TITLE: System for material beneficiation involving hydro-squeeze classifier assisted grinding ball mill (Joint Patent with JSW Steels Ballari)Corporate Overview Of Mineworx - Mineworx Technologies The HM X-mill is a transformation in grinding technologies based on a proprietary high-velocity horizontal-rotary milling design. It is designed for the fine grinding of ores and regrinding of concentrates and tailings producing a consistent particle size with 100% of the ground material passing 100 mesh (150 micrometers)


Grinder Ball Mill Suppliers Manufacturer Distributor ...

Alibaba offers 464 Grinder Ball Mill Suppliers and Grinder Ball Mill Manufacturers Distributors Factories Companies. There are 284 OEM 270 ODM 86 Self Patent. Go through the mill | Article about go through the mill by ... Material with a particle size of up to 30 mm is handled by ball and rod mills; self-grinding mills are suitable for particle sizes up to 300 mm. The particle size of the product may be less than 0.04 mm. The wear of the steel balls in grinding is 1–3 kg per ton of ore. Power consumption per ton of ore is 10–20 kW-hr.


US8141804B1 - Curved hammer - Google Patents

The various embodiments disclosed and pictured illustrate a curved hammer for comminuting various materials. The illustrative embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly.Testing method for ball mills - Outokumpu Technology Oyj 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 ...


A Review of the Modeling of High Pressure Grinding Rolls

focused on this energy-efficient grinding technology by utilizing a single-particle roll mill as well as a 200 mm by 100 mm high pressure grinding rolls at the University of California Berkeley USA. They studied the effect of HPGR operating parameters and developed fundamental models to simulate high pressure breakage phenomena.John Stevens (Wisconsin inventor) - Wikipedia John Stevens (December 4 1840 – August 5 1920) was a miller and inventor who lived in Neenah Wisconsin.His inventions in flour milling revolutionized the process leading to large-scale shifts in wheat-growing regions and to the predominance of particular milling companies and mill-equipment manufacturers.


Patents Assigned to Minneapolis ... - Justia Patents Search

Date of Patent: October 20 1981. Assignee: Minneapolis Electric Steel Castings Company. Inventor: James E. Mishek. Shell liner assembly for ore grinding mills. Patent number: 4270705. Abstract: The disclosure is directed to an improved liner assembly for the drum or shell of an ore grinding machine comprising a first plurality of liner ...CA1138397A - Shell liner assembly for ore grinding mills ... Abstract The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type comprising a first plurality of holder segments which are mounted directly to the shell of the mill and a second plurality of wear segments which are mounted to the shell in overlying relation to the holder segments which are thus virtually unexposed to the ...


Ore Grinding Mill Suppliers all Quality Ore Grinding Mill ...

Industrial Grinding Mill Powder Grinding Mill Ore Grinding Mill Price List. Country/Region: China. Main Products: Shaking TableJig SeparatorCentrifugal ConcentratorSpiral SeparatorBall Mill. Total Revenue: US$1 Million - US$2.5 Million. Top 3 Markets: Southeast Asia 30% Africa 29% Domestic Market 15%.Why HPGRs are revolutionising mill circuits As ore grades decline across the globe miners are being pushed to dig deeper and process more competent ore bodies requiring a more efficient comminution technology to remain profitable. The inter-particle grinding of a HPGR produces significantly more fines than conventional crushing as the force is applied from multiple directions and to ...


US Patent Application for VERTICAL GRINDING MILL SCREW SHAFT ...

Justia Patents US Patent Application for VERTICAL GRINDING MILL SCREW SHAFT AND METHOD OF DESIGNING AND/OR MANUFACTURING A SCREW SHAFT Patent Application (Application #20190168231)US10010889B1 - Vertical roller mill - Google Patents The invention relates in general to a vertical roller mill of the type comprising a grinding table which is rotatable about a vertical axis; at least two grinding rollers which are rotatable about substantially horizontal axes and are directed against an annular grinding path of the grinding table; a nozzle ring separation area encircling the table for introducing separating conveying and ...


Shell liner assembly for ore grinding mills - Minneapolis ...

Grinding mills of this type may employ rods or balls to assist in the comminuting process as the mill is rotated or the ore may be self-grinding in large autogenous mills. An example of the latter type mill consists of a large cylindrical drum mounted on bearings for rotation about a substantially horizontal axis and driven by a powerful motor ...Trunnion bearing support system - DOMINION ENGINEERING WORKS ... Trunnion bearing support system. United States Patent 3884420. Abstract: The trunnion bearings for a grinding mill such as an autogenous ore reduction mill are supported on a simple low cost supporting pedestal providing two degrees of accommodation of the trunnion under varying deflections due to changes in load conditions. Inventors:


US5797550A - Attrition mill - Google Patents

The mill is characterized in that a classification as between coarse and fine particles is performed in the mill upstream of the separator. An attrition mill comprising a grinding chamber (1) an axial impeller (10) a chamber inlet (3) for admitting coarse particles and a separator comprising a chamber outlet (6) through which fine particles ...Shell liner assembly for ore grinding mills - Minneapolis ... Grinding mills of this type may employ rods or balls to assist in the comminuting process as the mill is rotated or the ore may be self-grinding in large automatic mills. An example of the latter type mill consists of a large cylindrical drum mounted on bearings for rotation about a substantially horizontal axis and driven by a powerful motor ...


thyssenkrupp and EIRICH join forces on further development of ...

thyssenkrupp Industrial Solutions the leading engineering construction and service provider for industrial plants and systems and Maschinenfabrik Gustav Eirich have agreed to cooperate on the further development of the EIRICH TowerMill a highly energy-efficient agitated media mill for the wet grinding of ores and minerals.Flexible milling and grinding solutions that last | FLSmidth 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.


US Patent for Roller mill with driven grinding roller Patent ...

A roller mill includes a grinding table arranged for rotation about a mill axis at least one grinding roller rotated about a grinding roller axis and in rolling engagement with the grinding table and at least one pivot lever retaining the grinding roller and having a pivot axis orientated parallel with or inclined relative to the grinding roller axis.Dry grinding process for reducing ore to pelletizable ... FIELD OF THE INVENTION. This invention relates to a dry grinding process for reducing ore to pelletizable particles which process comprises grinding the ore in a size-reducing unit classifying the ore in a pneumatic separator recycling the coarse fraction into the size-reducing unit discharging the remaining fraction as a finished product and maintaining a substantially constant total rate ...


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