Difference Between Sag Mill vs Ball Mill - mech4study

Oct 12, 2017 · Today we will learn about difference between sag mill vs ball mill. A mill is a machine by which solid or hard materials are broken into smaller pieces by means of grinding, crushing or cutting. This commutation is an essential part of many processes. Various kinds of mills are there with which different material processing takes place.

Oyu Tolgoi mine - Wikipedia

History. Canadian-based Ivanhoe Mines discovered the gold-copper ore deposit in 2001 in the Gobi Desert of Mongolia. It is in an area known as Oyu Tolgoi (Mongolian for Turquoise Hill), where in the time of Genghis Khan outcropping rocks were smelted for copper. The place was suspected to have mineralization by Mongolian geologists since 1950s.

Autogenous and Semi-Autogenous Mills

AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill. Because of the range of mill sizes available, AG/SAG milling can often be accomplished with fewer lines than in a conventional rod mill-ball circuit. All of the above contributes to


Tumbling mills, eg AG, SAG, rod and ball mills Conventional reciprocating crushers, eg jaw, gyratory and cone HPGRs Tumbling mills are described using 2 indices: M. ia. and M. ib. Crushers have one index: M. ic. HPGRs have one index: M. ih. For tumbling mills the 2 indices relate to "coarse" and "fine" ore properties plus an

low cost ball mills and screens in mongolia

flotation cell mining c series ball mill flotation cell. manganese mine hard flotation cell iron ore ball mill iron ore ball mill c gold flotation cell greenivory Gold Ore Ball Mills and Floatation Cells Mongolia Jun 11 2008 These Mongolian ASM formed a hard rock quartz ore mining co op and built this ball mill and and flotation cell circuit for

Rod mills, how they function - Mine Engineer.Com

Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6.

Introduction to Mineral Processing - Chevron Phillips Chemical

Copper/Molybdenum Ore. The figure above is a simplified flow sheet showing the basic steps involved in a copper mill producing the byproduct molybdenum. The crushed copper ore (containing, for example, 0.75% Cu and 0.015% Mo) is fed to the grinding circuit where water is added and the ore .

Erdenet Mining Corporation

Erdenet Mining Corporation SOE was established in accordance with an agreement between governments of Mongolia and (former) Soviet Union. It started its operation in 1978. At present it is a fairly large complex processing 26 million tons of ore per year and producing around 530.0 thousand tons of copper concentrate and around 4.5 thousand tons .

Iron Ore: Assessing Mongolia's potential

Iron Ore: Assessing Mongolia's potential Ulaanbaatar, 3-5th September, 2012 Frontier Invest Mongolia 2012 By John Johnson, CEO, CRU China . . Chinese mill • Mongolia requires larger scale mines, infrastructure and/or to add value locally Challenges for Mongolian iron ore producers 20 .

Rod Mills - 911Metallurgist

A rod mill uses steel rods as the grinding media in tumbling mills is an efficient means to feed ball mills a product finer than could be made in a crusher but coarser than could be made in a ball mill. The principal use for rod mills, which were invented to make ball mill feed in a wet-grinding rod mill-ball mill circuit. Rod mills came into use in the United States beginning in 1900s and .

Homemade Ball Mill to Crush Gold Ore - YouTube

Sep 11, 2016 · This is my homemade gold ore ball mill to process lode claim material. Uses steel balls or i have a large round wheel made of steel to also crush. This could also use rods of steel as a rod mill.

AMIT 135: Lesson 5 Crushing – Mining Mill Operator Training

The purpose of the primary crusher is to reduce the ROM ore to a size amenable for feeding the secondary crusher or the SAG mill grinding circuit. The ratio of reduction through a primary crusher can be up to about 8:1. Feed: ROM up to 1.5 m; Product: -300mm (for transport) to -200mm (for SAG mill) Feed Rate: 160 to 13,000 tph

the Difference of Rod Mill and Ball Mill - ore processing

The ball mill has a great similarity in appearance with rod mill,which is most widely used in the cement and fertilizer production. Different from rod mill,ball mill is also used as dry type grinding mill, which is the main difference of the ball mill and rod mill because of its different grinding media.

Bond Tests | Mining | SGS

Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond's Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill.

Cascade Steel Rolling Mills

For over 50 years, Cascade Steel Rolling Mills has been providing the Western U.S. and Canada with high quality steel products produced from recycled scrap metal at our state-of-the-art electric arc furnace steel mill.. Our products include reinforcing bar (rebar), coiled reinforcing bar, wire rod, merchant bar and other specialty products.

Hard Rock Mining Gold and Silver Ore and processing it

This bin allows the mill to take in ore at a constant feed rate. Various crushing systems are used, usually starting with a coarse crushing with something like a jaw or cones crusher, followed by a fine crushing using something like a ball or Rod mill.

Rod Mills - Mineral Processing & Metallurgy

The Steel Head Rod Mill (sometimes call a bar mill) gives the ore dressing engineer a very wide choice in grinding design.He can easily secure a standard Steel Head Rod Mill suited to his particular problem. The successful operation of any grinding unit is largely dependent on the method of .


The geometry of a mill with conical ends is shown in 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 .

Relationships between comminution J energy and product .

ore by A. Jankovic*, H. Dundar†, and R. Mehta‡ Synopsis An extensive laboratory grinding study was carried out on a magnetite ore in order to assess the grinding behaviour of magnetic concentrate and tail from low intensity magnetic separation (LIMS). The test work involved Bond ball mill testing, rod .

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Comparison between Rod Mill and Ball Mill - ore processing

Rod mill is a type of grinding mill whose grinding media is steel bar, while ball mill is steel ball. 1. Rod mill are usually applied to grinding the w-sn ore and rare metal in the reselection or magneticore-dressing plant in order to avoid the damage caused by the over crushing. 2.

Eriez - Size Reduction and Laboratory Equipment

Rod & Ball Mills The Ball/Rod mills are meant for producing fine particle size reduction through attrition and compressive forces at the grain size level. They are the most effective laboratory mills for batch-wise, rapid grinding of medium-hard to very hard samples down to finest particle sizes.

Wet type rod mill,Limestone rod mill,Mineral rod mill,Ore .

Rod mill is used for coarse crushing before ball mill; its feed size is less than 20~25mm, and general granularity is below 3mm. The main advantages of the ore rod mill are selective crushing, even granularity, small argilization, low energy consumption, high grinding efficiency, etc. it will not excessively crush and can produce cubic particle products according to requirements.

China Ore Grinding Dry Rod Mill for Iron Ore Mining Plant .

Dry Rod Mill, Rod Mill, Rod Mill for Iron Ore manufacturer / supplier in China, offering Ore Grinding Dry Rod Mill for Iron Ore Mining Plant, 1200*4900 Vibrating Feeder for Stone Crushing Plant, 2pg400*250 Double Roller Crusher for Sale and so on.

Oyu Tolgoi mine - Wikipedia

The Oyu Tolgoi mine is in the South Gobi Desert of Mongolia, 80 kilometres (50 mi) north of Mongolia's border with the People's Republic of China, where the mined copper is expected to be shipped. Oyu Tolgoi deposits contain an estimated 2,700,000 tonnes of .

rod mill for rednecks, gold ore testing - YouTube

Jun 01, 2013 · Homemade rod mill for black sands, gold ore, etc. Homemade rod mill for black sands, gold ore, etc. Skip navigation . Mini Pilot Plant Rod Mill - Duration: 1:57. David Michaud 1,957 views.

Grinding Mills - Ball mills vs rod mills gringing ore .

GRINDING MILLSROD MILLSNew Used Mining . NEW AND USED ROD MILLS FOR SALE Nelson Machinery supplies used and refurbished Rod Mills worldwide manufactured by Allis Chalmers and more A rotating drum causes friction and attrition between steel rods and ore particles The rods used in the mill usually a highcarbon steel can vary in both the length and the diameter


1 MODELING THE SPECIFIC GRINDING ENERGY AND BALL-MILL SCALEUP K. G. Tsakalakis & G.A. Stamboltzis NTUA Athens-Greece E-mail: [email protected] Presented at the conference IFAC 2004 held in September 2004 (Nancy-France)

Mill (grinding) - Wikipedia

F 80 is the mill circuit feed size in micrometers. Rod mill. A rotating drum causes friction and attrition between steel rods and ore particles. [citation needed] But note that the term 'rod mill' is also used as a synonym for a slitting mill, which makes rods of iron or other metal. Rod mills are less common than ball mills for grinding minerals.

AMIT 135: Lesson 2 Circuit Mass Balancing – Mining Mill .

For example, assume that raw ore is a two component system comprised of a valued mineral and host rock having relative densities of 6.30 and 2.65, respectively. The amount of valued mineral is 30% of the total ore.Total Solid Mass, M: Mineral + Host Rock – 30 + .